Last update:
Sat Mar 30 15:53:53 MDT 2019
Anonymous Inventions New and Interesting . . . . . 16--16
Anonymous Inventions: Recently Patented Inventions 18--18
Anonymous The Growth of the Automobile, Review of
the Year, 1919, and more . . . . . . . . 3--5
Victor Pagé The Refinement of Details . . . . . . . 6--7
C. H. Claudy The Romance of Invention --- VI . . . . 8--8
Anonymous Making the Automobile Complete . . . . . 9--9
John Q. Stewart The Nature of Things . . . . . . . . . . 10--11
Victor W. Page The All-Year Car . . . . . . . . . . . . 12--13
Frank M. Williams The New York State Barge Canal --- I . . 14--15
Anonymous Correspondence . . . . . . . . . . . . . 245--245
Henry Norris Russell The Heavens in March, 1920 . . . . . . . 252--252
Anonymous Inventions New and Interesting . . . . . 254--254
Anonymous Books: New Books, Etc. . . . . . . . . . 263--264
Ralph Howard A Year's Supply of Raw Material for the
Melting Pot, Wartime Bureaus and the
Taxpayer, and more . . . . . . . . . . . 239--241
George W. Rowell, Jr. Wicker-Weaving by Machine . . . . . . . 242--242
William H. Easton Electric Locomotives that are Still
Larger and More Powerful, Starting from
Cold on Alcohol . . . . . . . . . . . . 243--243
A. H. Beardsley Photo Enlargements by Expansion of
Negative Emulsion, The Mathematical
Motor Truck . . . . . . . . . . . . . . 243--243
C. H. Claudy The Romance of Invention --- IX . . . . 244--244
John L. Von Blon Commercializing the Coyote . . . . . . . 246--246
James Anderson Wreck-Proof Safe for Ocean-Going Mail 247--247
Sidney J. Hall How the Chinese Make their Beautiful
Enamel-Work . . . . . . . . . . . . . . 247--247
George Gaulois Putting Infra-Red Rays to Work . . . . . 248--249
J. Malcolm Bird What About the Old-Fashioned Winter? . . 253--253
Anonymous Vermont Talc . . . . . . . . . . . . . . 262--262
Anonymous Correspondence . . . . . . . . . . . . . 273--273
Anonymous Inventions New and Interesting . . . . . 282--282
Anonymous Inventions: Recently Patented Inventions 284--284
C. W. Geiger Lightening the Stevedore's Load,
Unscientific Lawmaking, and more . . . . 267--269
Robert G. Skerrett Navigating Ships in Trains . . . . . . . 270--270
George Gaulois The X-Ray in the Shop . . . . . . . . . 271--271
Henry J. Edsall The Cleaning of Railroad Ballast, Street
Accidents in Miniature . . . . . . . . . 271--271
Raymond Francis Yates Succeeding in Chemistry . . . . . . . . 272--272
Ralph Howard Seeking the Seven-Mile Ceiling . . . . . 273--273
Harry Chapin Plummer Highways Through the Wilderness . . . . 274--274
S. G. Roberts Cutting Out a Railroad Hazard . . . . . 275--275
Ralph Howard Welding a Lighthouse's Broken Legs . . . 275--275
Howard S. Leach The Photostat as an Aid to Research . . 276--277
Arthur L. Dahl What is a Silo? . . . . . . . . . . . . 280--280
James Anderson Ecuador Contributes a Wood that is
Lighter than Cork . . . . . . . . . . . 281--281
Anonymous Some Features of the American Motor Boat
Show . . . . . . . . . . . . . . . . . . 281--281
Anonymous American Tennis Shoes in Chile . . . . . 286--286
Anonymous Condensation of Fruit Juices . . . . . . 292--292
Anonymous Correspondence . . . . . . . . . . . . . 301--301
H. E. Howe The Service of the Chemist . . . . . . . 306--308
Victor W. Page The Motor-Driven Commercial Vehicle . . 310--310
Ralph Howard America's Share in World Production,
Paper, and more . . . . . . . . . . . . 295--297
H. W. and
C. Wells Nieman What Shall we Say to Mars? . . . . . . . 298--298
S. R. Winters Paper from Cottonseed Waste . . . . . . 299--299
A. R. Surface Iron Castings from Steel Scrap, Using
Brick and Wood in Reinforced Concrete,
and more . . . . . . . . . . . . . . . . 299--299
H. E. Howe The Future of the Cotton Industry . . . 300--300
L. Lodian Strange Things to Eat . . . . . . . . . 302--303
Thomas Ewing Dabney New Orleans' Industrial Canal . . . . . 304--304
Robert G. Skerrett Finger Signals for the Motorist,
Breaking Away from the Conventional in
Mail Airplanes, and more . . . . . . . . 305--305
Anonymous Potash from a New Source, Airplane
Service Between Denmark and Germany, and
more . . . . . . . . . . . . . . . . . . 318--320
Henry A. Gardner Quick Dry Lacquer Coating, Protecting
the Surface of Aluminum from Corrosion,
and more . . . . . . . . . . . . . . . . 320--324
Anonymous Correspondence . . . . . . . . . . . . . 333--333
Henry Norris Russell The Heavens in April, 1920 . . . . . . . 338--339
Anonymous Inventions New and Interesting . . . . . 340--340
Anonymous Inventions: Recently Patented Inventions 342--342
Anonymous Mail Delivery to Ships at Sea, Detecting
Men by their Heat Radiation, and more 327--329
J. Bernard Walker The Panama Canal Today . . . . . . . . . 330--330
Leo G. Hall Wrecking Reinforced Concrete Structures
--- The Demolishing Art at its Best,
Fighting Crickets with Flame Throwers 331--331
George Gaulois A Man-Sized Helicopter that Leaves the
Ground with Full Load . . . . . . . . . 331--331
C. H. Claudy The Romance of Invention --- X . . . . . 332--332
Anonymous Testing Airplane Propellers . . . . . . 333--333
Howard Greene Why the Trailer has Made Good . . . . . 334--335
W. Norman Bratton The Latest Word in Steel . . . . . . . . 336--336
A. M. Clark Electricity's Latest Contribution to the
Modem Art of Heat Treatment . . . . . . 337--337
Daniel T. Pierce How Colloidal Chemistry Aids the Paving
Industry . . . . . . . . . . . . . . . . 337--337
Anonymous A Practical Blue-Print Protector . . . . 351--351
Anonymous Correspondence . . . . . . . . . . . . . 361--361
Anonymous Inventions New and Interesting . . . . . 368--368
Anonymous Inventions: Recently Patented Inventions 370--370
Anonymous Books: New Books, Etc. . . . . . . . . . 380--380
Anonymous Building Houses Out of the Waste of War,
Rust-Proof Steel in Dentistry, and more 355--357
Robert G. Skerrett Making Farms Out of Deserts . . . . . . 358--358
Harry Botsford Gasoline from Natural Gas . . . . . . . 359--359
S. R. Winters Testing Paper by Tearing, The
Electrified Blackboard for the Technical
Classroom, and more . . . . . . . . . . 359--359
C. H. Claudy Exploiting the Inventor --- I . . . . . 360--360
B. S. Beach The Electric Railroad Over the Rockies 362--362
George F. Paul The Wrecking Derrick and a Concrete Job,
Our Instincts have Birthdays, and more 363--363
Oliver Johnson Piercing New Zealand's Mountain Barrier 363--363
LeRoy Jeffers From the Mountains of Montana to the
Tetons of Wyoming . . . . . . . . . . . 364--365
H. A. Crafts From Boneyard to Shipyard . . . . . . . 366--366
Anonymous Making Wax Dummies for Fashion Displays,
Some Novel Uses for the Tattooing Needle 367--367
Anonymous A Botanical Romance . . . . . . . . . . 378--379
Anonymous Correspondence . . . . . . . . . . . . . 389--389
Anonymous Inventions New and Interesting . . . . . 400--400
Anonymous Inventions: Recently Patented Inventions 402--402
Fred E. Woodward The Books of Forty Years, Making Window
Glass, and more . . . . . . . . . . . . 383--385
Robert G. Skerrett Is the Fabricated Ship a Success? . . . 386--386
Richard F. Hammatt Winged Patrols for Our Expansive Forests 387--387
G. Orb Multiple Wheel Truck and the Pneumatic
Tire . . . . . . . . . . . . . . . . . . 387--387
C. H. Claudy Exploiting the Inventor --- II . . . . . 388--388
Raymond Francis Yates Succeeding in Electrical Engineering . . 389--389
David Harold Colcord How Much is a Worker Worth? . . . . . . 390--391
R. P. Crawford and
G. H. Dacy Fighting Plant Pests with Fire . . . . . 392--393
Andrew Stewart Creating an Asset . . . . . . . . . . . 394--394
George W. Grupp What Types of Drives are Used in Motor
Trucks? . . . . . . . . . . . . . . . . 395--395
A. R. Surface Power from Peat --- An Interesting Irish
Experiment in Fuels . . . . . . . . . . 395--395
M. Tevis Something New in Fluorescent Screens for
Radioscopic Work, Where there is no
Sugar Shortage, and more . . . . . . . . 395--395
Francis Dickie Making Boro-Budur Known . . . . . . . . 398--399
Anonymous Measuring Carbon Content of Steel . . . 412--412
Anonymous Correspondence . . . . . . . . . . . . . 421--421
Victor W. Page The Motor-Driven Commercial Vehicle: The
Motor-Driven Commercial . . . . . . . . 430--430
Anonymous Why is Gasoline High?, Building for the
Future, and more . . . . . . . . . . . . 415--417
C. L. Edholm House Surgery in the Building Crisis . . 418--418
S. R. Winters Is the Dam Safe? . . . . . . . . . . . . 419--419
Charles W. Geiger California's Power Famine . . . . . . . 419--419
C. H. Claudy The Romance of Invention --- XI . . . . 420--420
Irving Langmuir At the Rock Bottom of Matter . . . . . . 421--421
George H. Dacy Uncle Sam --- Motion Picture Producer 422--422
A. R. Surface Carbon Electrodes in the Making . . . . 423--423
S. R. Winters High Flying in the Laboratory . . . . . 423--423
G. Orb Where Concrete Things are Cast . . . . . 423--423
LeRoy Jeffers Among the Mountains of Western Canada 424--425
Howard C. Kegley The Topical Lamp Post . . . . . . . . . 425--425
Tompkins McIlvaine National Life Insurance on the Endowment
Plan . . . . . . . . . . . . . . . . . . 426--426
W. A. Murrill Plant Growths that Shed Light . . . . . 427--427
Leon Augustus Hausman Tiny Creatures that Make Bad Water . . . 427--427
J. F. Springer Two Great Organs . . . . . . . . . . . . 428--429
Anonymous A Molding Machine Which Throws the Sand 444--444
Anonymous Correspondence . . . . . . . . . . . . . 453--453
H. E. Howe The Service of the Chemist . . . . . . . 460--460
Anonymous Inventions New and Interesting . . . . . 462--463
Anonymous Inventions: Recently Patented Inventions 464--464
Anonymous Books: New Books, Etc. . . . . . . . . . 476--476
Anonymous The Torpedo Motor Boat, The Aerial Mail
and Aviation, and more . . . . . . . . . 447--449
E. M. Rush Making an American City . . . . . . . . 450--451
C. H. Claudy Exploiting the Inventor --- III . . . . 452--452
Monroe Woolley Required Reforms of the Road . . . . . . 453--453
H. A. Mount The Story of Radium . . . . . . . . . . 454--455
M. A. Henry Where the Eye Supplants the Ear . . . . 456--456
J. F. Springer The Geology of Ripple Marks . . . . . . 457--457
Seline Hess A Radial Gate for Irrigation Canals . . 457--457
W. A. Butterfield Lilies of Stone . . . . . . . . . . . . 458--459
H. J. Shepstone A Stranded School of Whales and what it
Means . . . . . . . . . . . . . . . . . 461--461
Francis Dickie Rare South Sea Armor . . . . . . . . . . 461--461
Anonymous Community Pumps for Irrigation, The
Current Issue of the
\booktitleScientific American Monthly,
and more . . . . . . . . . . . . . . . . 472--474
Anonymous Correspondence . . . . . . . . . . . . . 485--485
Anonymous Inventions New and Interesting . . . . . 494--494
Anonymous Inventions: Recently Patented Inventions 496--496
Robert G. Skerrett Can Duplex Craft Speed Up
Transportation?, New York's Greatest
Handicap, and more . . . . . . . . . . . 479--481
Robert F. Nattan The Ingenuity of the Watchmaker . . . . 482--483
C. H. Claudy' Exploiting the Inventor --- IV . . . . . 484--484
George H. Dacy Subduing the Boll Weevil . . . . . . . . 486--486
John L. Von Blon The House on the Hill with Front Door in
the Valley . . . . . . . . . . . . . . . 487--487
S. R. Winters Development of American Clays . . . . . 487--487
W. A. Ehlers Annealing with Gas . . . . . . . . . . . 488--488
Erie A. Dime What Europe is Doing in Aviation ---
Americans, Please Take Notice! . . . . . 489--489
George Gaulois Air Bags for the Airplane that Lands on
Water . . . . . . . . . . . . . . . . . 489--489
Hector C. Bywater The Backbone of Naval Power . . . . . . 490--490
Henry Townsend The Fuel Case of Coke vs. Coal . . . . . 491--491
Allen P. Child Keeping the Construction Laborer
Satisfied . . . . . . . . . . . . . . . 491--491
Anonymous The Steamship Pier Problem . . . . . . . 492--493
Anonymous The Automatic Substation from an
Economic Standpoint . . . . . . . . . . 498--500
Henry Norris Russell The Heavens in May, 1920 . . . . . . . . 522--522
Anonymous Inventions New and Interesting . . . . . 523--523
Anonymous Inventions: Recently Patented Inventions 524--524
Anonymous Opening Up the Harlem River, Determining
Carbon in Steel by Electric Resistance,
and more . . . . . . . . . . . . . . . . 507--509
Robert G. Skerrett The World's Greatest Vehicular Tunnel 510--510
Ralph Howard Bringing the X-Ray to the Patient,
Light-Filters for Observing Pilot
Balloons . . . . . . . . . . . . . . . . 511--511
L. A. Hawkins The Langmuir Condensation Pump . . . . . 511--511
Anonymous A Forward Step in Automotive Fuels . . . 512--512
Herbert T. Wade The Tools of Science . . . . . . . . . . 513--513
C. H. Claudy A Telephone to Europe? . . . . . . . . . 513--513
S. G. Roberts Harnessing Our Waterpower . . . . . . . 514--515
Raymond Francis Yates Succeeding in Mining Engineering . . . . 516--517
J. F. Springer Watering Idaho's Desert . . . . . . . . 520--521
Anonymous Correspondence . . . . . . . . . . . . . 37--37
Anonymous Inventions New and Interesting . . . . . 46--46
Anonymous Inventions: Recently Patented Inventions 48--48
Anonymous \booktitleScientific American Monthly,
Obsolete at the Very Outset, and more 32--33
Anonymous Mapping with the Squeeze of a Bulb . . . 34--35
Anonymous A Governmental Step-Child . . . . . . . 36--36
Anonymous Saving a Capsized Dreadnought . . . . . 38--38
Anonymous Revival of Our Oldest Navy Yard . . . . 39--39
Frank M. Williams The New York State Barge Canal --- II 40--41
Anonymous The Shunt-less Freight Terminal . . . . 42--43
Arthur Bennington Why Big Guns are Short-Lived . . . . . . 44--44
John Storck and
Cyrus C. The Geographer's Corner . . . . . . . . 49--49
H. E. Howe The Service of the Chemist . . . . . . . 546--547
Victor W. Page The Motor-Driven Commercial Vehicle . . 548--548
Anonymous Inventions: Recently Patented Inventions 552--552
Anonymous Books: New Books, Etc. . . . . . . . . . 560--560
Anonymous How much Water do we Drink in the United
States?, \booktitleScientific American
Monthly for May, and more . . . . . . . 535--537
Robert G. Skerrett Piercing the Catskills for Water . . . . 538--538
Ralph Howard Making a River Pump its Water Uphill,
Talking to Thousands by Electrifying and
Amplifying the Speaker's Voice . . . . . 539--539
W. Lambert To Offset the High Cost of Ice . . . . . 539--539
C. H. Claudy A Merlin of Today . . . . . . . . . . . 540--540
H. A. Mount Hoboes of Industry . . . . . . . . . . . 541--541
H. A. Crafts Making Bad Land Good . . . . . . . . . . 542--542
Anonymous Our Share of the German Fleet . . . . . 543--543
Oscar R. Foster The Architecture of the Atom . . . . . . 544--545
Anonymous Correspondence . . . . . . . . . . . . . 569--569
Anonymous Inventions New and Interesting . . . . . 578--579
Anonymous Inventions: Recently Patented Inventions 580--580
Anonymous Books: New Books, Etc. . . . . . . . . . 588--588
Alexandre Livventaal The Crop Factory, Steam Locomotives and
the Coal Bill, and more . . . . . . . . 563--565
Harry A. Mount Dismantling a City . . . . . . . . . . . 566--566
Ralph Howard The Welded Joint in Structural-Steel
Work . . . . . . . . . . . . . . . . . . 567--567
G. Orb Open-Air Mining of Coal by Electric
Shovels . . . . . . . . . . . . . . . . 567--567
Chauncey P. Carter The International Trademark . . . . . . 568--568
Samuel J. Record Possum Wood . . . . . . . . . . . . . . 569--569
Anonymous The Laboratory in Business . . . . . . . 570--571
M. A. Henry Ohio's Flood Insurance . . . . . . . . . 572--573
J. F. Springer Pin-Hole Photography . . . . . . . . . . 574--576
Anonymous Laws of Air Resistance of Aerofoils, A
Light-Fringe Dilatometer . . . . . . . . 586--586
Anonymous Correspondence . . . . . . . . . . . . . 597--597
Henry Norris Russell The Heavens in June, 1920 . . . . . . . 602--603
Anonymous Inventions New and Interesting . . . . . 604--604
Anonymous Inventions: Recently Patented Inventions 606--606
Anonymous Notes and Queries . . . . . . . . . . . 612--612
Anonymous Adding Color to the Motion-Picture
Screen, Progress in Electrification of
Swiss Railways, and more . . . . . . . . 591--593
J. F. Springer The Overhead Cable Crossing . . . . . . 594--594
Wm. A. Murrill The Dendrograph --- An Instrument that
Keeps Tabs on Tree Growth, A
Fire-Fighting Equipment on Rails . . . . 595--595
S. R. Winters Determining the Heating and Cooling
Curves of Metals . . . . . . . . . . . . 595--595
Oscar R. Foster The Architecture of the Molecule . . . . 596--596
J. Walter Fewkes Ancient Remains in Colorado . . . . . . 598--598
Alfred Gradenwitz An Old Departure in Theater Building . . 599--599
Victor Pagé A Racing Car with Two Engines . . . . . 599--599
Charles F. Lang Solving the Short-Haul Problem . . . . . 600--601
Anonymous Correspondence . . . . . . . . . . . . . 621--621
Anonymous Inventions New and Interesting . . . . . 628--628
Anonymous Books: New Books, Etc. . . . . . . . . . 636--636
Harry A. Mount Crystals that Speak, The Scientist and
his Definitions, and more . . . . . . . 615--617
Robert G. Skerrett Pooling Our Power . . . . . . . . . . . 618--618
Herbert T. Walker Two Engines for One . . . . . . . . . . 619--619
C. H. Claudy The Romance of Invention --- XIII . . . 620--620
Anonymous The Question of Natural Gas . . . . . . 621--621
J. Bernard Walker Challenger and Defenders of the
America's Cup . . . . . . . . . . . . . 622--623
Anonymous Putting Plants on Daylight Rations . . . 624--624
W. A. Murrill Where Chocolate Comes from . . . . . . . 626--627
Anonymous Correspondence . . . . . . . . . . . . . 645--645
Anonymous Inventions New and Interesting . . . . . 652--652
Anonymous Inventions: Recently Patented Inventions 654--654
Anonymous Books: New Books, Etc. . . . . . . . . . 664--664
Anonymous A Boat that Pumps its Way Along,
Fighting a Fisherman's Pest, and more 639--641
Harry A. Mount Sounding with Sound . . . . . . . . . . 642--642
James Anderson Making the Milkman Fear the Pump . . . . 643--643
W. F. Wilcox Machinery for the Sugar-Beet Field,
Mowing with the Tractor . . . . . . . . 643--643
Raymond Francis Yates Succeeding in Radio Engineering . . . . 644--644
D. H. Colcord The Scientific Basis of Carelessness . . 645--645
M. A. Henry Checking Up Einstein . . . . . . . . . . 646--647
Arthur L. Dahl What About Our Wine Grapes? . . . . . . 648--648
Avis Gordon Vestal Directing the Detourist . . . . . . . . 649--649
Ralph Howard Breaking the World's Motorcycle Records,
Lantern Slides by the Yard, and more . . 649--649
Joshua W. Alexander Business and Government . . . . . . . . 650--650
Jacques Boyer Artificial Fertilization of Flowers,
Pulling Cables by Auto-Power, and more 651--651
C. T. Mason Barbados an Oil Field, Soapstone, and
more . . . . . . . . . . . . . . . . . . 662--663
Anonymous Correspondence . . . . . . . . . . . . . 673--673
H. E. Howe The Service of the Chemist . . . . . . . 678--679
Victor W. Page The Motor-Driven Commercial Vehicle . . 680--680
Anonymous Inventions: Recently Patented Inventions 682--682
Anonymous Forerunners of the Flying Liners,
Cleaning a Clock, and more . . . . . . . 667--669
Robert G. Skerrett Duluth to Liverpool in One Bottom . . . 670--670
Vladimir Karapetoff Common Sense in the Laboratory . . . . . 672--672
Anonymous Relieving the Nitrate Pressure . . . . . 673--673
H. A. Mount What is Wrong with Our Paper Supply? . . 674--674
Harry Chapin Plummer With Our Latin Customers . . . . . . . . 675--675
M. A. Henry When the Heart Tells its Story . . . . . 676--676
Ralph Howard How Much Paper in Your Shoes? . . . . . 677--677
Paul Kirkpatrick Electric Power from Sunlight . . . . . . 677--677
W. A. Murrill Fighting for Healthy Plants . . . . . . 677--677
Anonymous The \booktitleScientific American
Monthly for June . . . . . . . . . . . . 684--684
Anonymous Correspondence . . . . . . . . . . . . . 701--701
Henry Norris Russell The Heavens in July, 1920 . . . . . . . 706--707
Anonymous Inventions New and Interesting . . . . . 708--708
Anonymous Inventions: Recently Patented Inventions 710--710
Anonymous Index . . . . . . . . . . . . . . . . . 718--718
Anonymous Notes and Queries . . . . . . . . . . . 719--719
Ralph Howard Addressing Thousands without Raising the
Voice, Commercial Airplane Development,
and more . . . . . . . . . . . . . . . . 695--697
John W. Kean Wireless Half Way 'Round the World . . . 698--699
C. H. Claudy Turning the Wheels of a Century Hence
--- I . . . . . . . . . . . . . . . . . 700--700
Jerome Lachenbruch The Silent Teacher . . . . . . . . . . . 702--703
J. F. Springer San Francisco Goes to the Mountains . . 704--704
H. L. Van Keuren Measuring Deflection with Interference
Bands . . . . . . . . . . . . . . . . . 705--705
A. R. Surface An Electrode that Bakes Itself . . . . . 705--705
Anonymous Correspondence . . . . . . . . . . . . . 61--61
H. E. Howe Service of the Chemist . . . . . . . . . 66--66
Victor W. Page The Motor-Driven Commercial Vehicle . . 68--68
Anonymous Inventions: Recently Patented Inventions 70--70
Anonymous A Gaseous Earth and the Space it Would
Occupy, Rebuilding Europe with the
Tank-Derrick, and more . . . . . . . . . 55--57
R. G. Skerrett Multiple Production --- A New Slogan . . 58--59
William C. Redfield Some Phases of Reconstruction . . . . . 60--60
Anonymous A Competitor for Acetylene . . . . . . . 61--61
J. F. Springer The Alaskan Railways . . . . . . . . . . 62--63
Pierre H. Boucheron The Vacuum Tube --- An Electrical
Acrobat . . . . . . . . . . . . . . . . 64--65
Anonymous Patent Office Facts . . . . . . . . . . 67--67
Anonymous Correspondence . . . . . . . . . . . . . 89--89
Anonymous Inventions New and Interesting . . . . . 96--96
Anonymous Inventions: Recently Patented Inventions 98--98
Anonymous Why it is Twelve O'clock?, Newport or
New York for the Cup Races, and more . . 83--85
H. E. Howe Wood Alcohol . . . . . . . . . . . . . . 86--86
C. Geoffrey Nicholson Some Vegetable Parasites . . . . . . . . 87--87
C. H. Claudy The Romance of Invention --- VII . . . . 88--88
Gordon P. Gleason The New York State Barge Canal --- III 90--91
Joseph Mastella Le Grand The Tower Telescope . . . . . . . . . . 92--92
Avis Gordon Vestal Blazing Wisconsin Ways, Hydro Power for
the Canadian Farmer, and more . . . . . 93--93
Anonymous Wonderful Clocks of Olden Times . . . . 94--95
Anonymous Correspondence . . . . . . . . . . . . . 111--111
Henry Norris Russell The Heavens in February, 1920 . . . . . 114--115
Anonymous Inventions New and Interesting . . . . . 118--118
Anonymous Why is it a Pound, Rear-Admiral William
S. Sims, and more . . . . . . . . . . . 105--107
W. F. Wilcox Mountain-Peak Grazing . . . . . . . . . 108--108
J. A. Stewart Electricity and the Census . . . . . . . 109--109
Wm. H. Walker Anti-Corrosion Engineering . . . . . . . 110--110
Edward S. Walsh The New York State Barge Canal --- IV 112--113
Wilam M. Butterfield A Vegetable Manufacturer of Decorated
Glass . . . . . . . . . . . . . . . . . 116--117
Wilamu T. Hornaday The Naturalist's Corner . . . . . . . . 120--122
Anonymous Electrolytic Destruction of Steel Due to
Leakage from Electric Railroads, Meters
for Measuring Steam, and more . . . . . 124--124
H. E. Howe The Service of the Chemist . . . . . . . 138--139
Anonymous Inventions New and Interesting . . . . . 140--140
Anonymous Inventions: Recently Patented Inventions 148--150
Anonymous Why Does Your Clock Keep Time?, February
Issue of the \booktitleScientific
American Monthly, and more . . . . . . . 127--129
J. F. Springer The Panama Terminals . . . . . . . . . . 130--131
Cyrus McCormick, Jr. Coöperation and Industrial Progress . . . 132--133
William T. Hornaday Wild Animal Models at the Zoo . . . . . 134--135
W. A. Ehlers Gas and Steel . . . . . . . . . . . . . 136--137
Anonymous Training Men for Foreign Fields, Marking
American Goods, and more . . . . . . . . 151--152
Anonymous Correspondence . . . . . . . . . . . . . 161--161
Anonymous Inventions New and Interesting . . . . . 168--168
Anonymous Inventions: Recently Patented Inventions 170--170
Rudolph L. Zimpei Dredges of Other Days, A Simple Matter
of Duty, and more . . . . . . . . . . . 155--157
Robert G. Skerrett On River and Canal . . . . . . . . . . . 158--159
C. H. Claudy The Romance of Invention --- VIII . . . 160--160
Anonymous The Exploring Rocket . . . . . . . . . . 161--161
Anonymous Airplanes that are Different . . . . . . 162--162
J. F. Springer From Coal Barge to Bunker . . . . . . . 163--163
Robert G. Skerrett Eliminating the Lost Call . . . . . . . 164--165
Anonymous Putting Flax on a Modern Basis . . . . . 166--167
Anonymous The Double Fovea in Birds of Prey,
Restoring Stained Glass Windows . . . . 171--171
Anonymous Correspondence . . . . . . . . . . . . . 185--185
H. E. Howe The Service of the Chemist . . . . . . . 190--191
Victor W. Page The Motor-Driven Commercial Vehicle . . 194--194
Anonymous Inventions: Recently Patented Inventions 196--196
Anonymous Books: New Books, Etc. . . . . . . . . . 207--208
Anonymous Why is it a Yard?, Some Economies for
Welded Ships, and more . . . . . . . . . 179--181
Benjamin F. Miessner Wireless and Everyday Business . . . . . 182--182
Bennie Hall Reclaiming the No-Man's-Land of America 183--183
C. W. Gieger San Francisco as a Fuel Oil Port . . . . 183--183
Leon Augustus Hausman Hairs that Make Fabrics . . . . . . . . 184--184
D. H. Colcord The Scientific Reason for Failure . . . 185--185
J. F. Springer Speaking of Tall Chimneys . . . . . . . 186--186
Charles W. Person The Modem Gas Holder . . . . . . . . . . 187--187
Anonymous Bringing the Electric Drive to Yachting 188--188
Robert H. Moulton Agate Guides for Fishing Rods --- A New
America Industry . . . . . . . . . . . . 189--189
Austin Parker The All-Year Carburetor . . . . . . . . 189--189
Anonymous Correspondence . . . . . . . . . . . . . 217--217
Anonymous Inventions New and Interesting . . . . . 226--226
Anonymous Inventions: Recently Patented Inventions 228--228
Herbert T. Wade Weighing a Monster Locomotive, A New
Aviation Instrument, and more . . . . . 211--213
Robert G. Skerrett Our Deepest Wells . . . . . . . . . . . 214--214
Merrill M. Hunting Gaging Screw Threads with a Beam of
Light . . . . . . . . . . . . . . . . . 215--215
George Gaulois What About Our Commercial Aviation? . . 215--215
C. H. Claudy The Fruits of Scientific Farming . . . . 216--216
R. E. Fulton Motor Bus vs. Street Car . . . . . . . . 217--217
John L. Von Blon Mansions of Mud . . . . . . . . . . . . 218--218
Ralph Howard Battling with Snow and Ice in the
Streets of New York . . . . . . . . . . 219--219
Anonymous Again the Steam Automobile . . . . . . . 220--220
Raymond Francis Yates Melting Brass Electrically, The
Artificial Daylight of Photoplay Land 221--221
George H. Dacy Steel and Stone Cannot Stop Them . . . . 222--222
H. E. Howe Better Light for Microscopy . . . . . . 223--223
H. A. Crafts Conquering the Stubborn Soil . . . . . . 223--223
Herbert T. Wade Firing Shell into a Concrete Tank . . . 224--224
Anonymous Electron Tube Generator . . . . . . . . 236--236
Anonymous Correspondence . . . . . . . . . . . . . 9--9
Anonymous Inventions New and Interesting . . . . . 16--17
Anonymous Inventions: Recently Patented Inventions 18--18
Anonymous Notes and Queries . . . . . . . . . . . 28--28
J. Malcolm Bird Where the Petroleum Goes, Railroads the
Foundation of National Prosperity, and
more . . . . . . . . . . . . . . . . . . 3--5
J. Bernard Walker Tuning Up for the Cup Races . . . . . . 6--7
C. H. Claudy The Romance of Invention --- XIV . . . . 8--8
H. T. Waller What Industry Can do for Americanization 9--9
A. R. Surface Wonders in Steel Forging . . . . . . . . 10--11
J. F. Springer Baltimore's Tilting Dam . . . . . . . . 12--12
Ralph Howard How Plate Glass is Made . . . . . . . . 14--15
Anonymous Orchard Medicine Quacks, Moisture
Absorption Through Varnish . . . . . . . 24--24
H. A. Gleason The Naturalist's Corner . . . . . . . . 26--27
Anonymous Correspondence . . . . . . . . . . . . . 221--221
Henry Norris Russell The Heavens in September, 1920 . . . . . 224--224
Anonymous Inventions New and Interesting . . . . . 229--229
Anonymous Inventions: Recently Patented Inventions 230--232
Anonymous Notes and Queries . . . . . . . . . . . 239--240
Anonymous Books: New Books, Etc. . . . . . . . . . 240--240
Anonymous Dutch Cooling Towers of Concrete, New
Plant Foods, and more . . . . . . . . . 215--217
A. R. Surface Building in the Wilderness . . . . . . . 218--218
Edgar Lockhart The Third Degree for the Baseball . . . 219--219
George Gaulois Handling High Voltage with Bare Hands 219--219
Alexander McAdie Muggy Days and Thirsty Air . . . . . . . 220--220
Ralph Howard Radium and its Works . . . . . . . . . . 221--221
George H. Dacy Where Willow Ware Comes From . . . . . . 222--223
Col. Jesse G. Vincent A Forward Step in American Airplane
Engines, This Year's Nominations for the
Hall of Fame . . . . . . . . . . . . . . 226--226
J. F. Springer Smothering Fire with Bubbles of Gas . . 228--228
Anonymous Is the Dam Safe? . . . . . . . . . . . . 238--238
Anonymous Correspondence . . . . . . . . . . . . . 249--249
H. E. Howe Service of the Chemist . . . . . . . . . 254--254
Anonymous Inventions New and Interesting . . . . . 256--256
Anonymous Inventions: Recently Patented Inventions 258--258
Anonymous Books: New Books, Etc. . . . . . . . . . 268--268
Alfred Longville Splitting Hairs With Close-Limit Tools,
Shifting Lines, and more . . . . . . . . 243--245
Arthur J. Herschmann and
Carl Scheid Turning the \vSkoda Works from Swords to
Plowshares . . . . . . . . . . . . . . . 246--247
Ralph Howard The Greatest of Floating Cranes . . . . 247--247
Raymond Francis Yates Succeeding in Safety Engineering . . . . 248--248
D. Waterson Names That Live in Our Language . . . . 249--249
J. F. Springer Water Pipes of Wood . . . . . . . . . . 250--251
William R. Andrews Checking Up the Gas Meter . . . . . . . 252--252
Austin C. Lescarboura America's Bid for the Gordon Bennett Cup 253--253
Hamilton M. Laing A Queer Visitor in the Garden . . . . . 255--255
Anonymous Malaria Control . . . . . . . . . . . . 260--260
Anonymous Correspondence . . . . . . . . . . . . . 277--277
Victor W. Page The Motor-Driven Commercial Vehicle . . 283--283
Sydney G. Koon A Mammoth Steam Unit and its Work,
Aluminum Dust Explosions, and more . . . 271--273
Robert G. Skerrett Shall the Corn Fields Run Our Cars? . . 274--274
Allen P. Child Clay Needles for the Talking Machine,
The Rocking of a Tall Chimney, and more 275--275
Charles Abbott Goddard Putting the Payroll on an Automatic
Basis . . . . . . . . . . . . . . . . . 275--275
Anonymous New Concepts of the Past Century . . . . 276--276
John T. Bartlett Shortening the Route from Farm to
Consumer . . . . . . . . . . . . . . . . 277--277
Ralph Howard Running the Gauntlet of Quality
Production . . . . . . . . . . . . . . . 278--279
Arthur L. Dahl From Fish to Food . . . . . . . . . . . 280--281
C. H. Claudy The Romance of Invention --- XVII . . . 282--282
Anonymous Inventions New and Interesting . . . . . 309--309
Anonymous Inventions: Recently Patented Inventions 310--310
Anonymous Books: New Books, Etc. . . . . . . . . . 316--316
Anonymous More Starting Power for the Steam
Locomotive, An Announcement, and more 295--297
Anonymous The Disaster to One of Our Latest
Submarines . . . . . . . . . . . . . . . 298--298
Ralph Howard Timing the Hundred-Mile-Per-Hour Racer 299--299
S. R. Winters Bomb-proof Coal Mining . . . . . . . . . 299--299
O. R. Geyer The Oil-Field Geologist . . . . . . . . 300--301
W. F. Sutherland The Toolmaker's Tools . . . . . . . . . 302--303
George M. Verity Solving the Labor Problem --- I . . . . 304--305
Harold J. Shepstone Reconstructing Stonehenge . . . . . . . 308--308
Anonymous To Make Hens' Eggs Hard, ``Flu''
Experiments on Monkeys . . . . . . . . . 315--315
Anonymous Inventions: Recently Patented Inventions 348--348
Anonymous The Future as Suggested by Developments
of the Past Seventy-five Years, Civil
Engineering, and more . . . . . . . . . 320--321
Anonymous Seventy-Five Years of Invention . . . . 322--325
Anonymous Civil Engineering . . . . . . . . . . . 326--326
Anonymous Transportation by Sea and Land . . . . . 327--330
Anonymous Seventy-Five Years of Applied
Electricity . . . . . . . . . . . . . . 331--333
Anonymous The Rise of the Automobile . . . . . . . 334--335
Anonymous Seventy-Five Years of Pure Science . . . 336--337
Anonymous The Mastery of the Skies . . . . . . . . 338--339
William I. Wyman Seventy-Five Years of American Patent
Administration . . . . . . . . . . . . . 340--341
Anonymous The Diamond Jubilee of the
\booktitleScientific American . . . . . 342--343
Anonymous From Wet Plate to Motion Pictures . . . 346--346
Anonymous Correspondence . . . . . . . . . . . . . 377--377
Henry Norris Russell The Heavens in October, 1920 . . . . . . 382--384
Anonymous Inventions: Recently Patented Inventions 385--386
Anonymous The High-Lift Wing and Commercial
Aviation, For an Independent Naval Air
Service, and more . . . . . . . . . . . 371--373
Jesse G. Vincent A New Deal in Transportation . . . . . . 374--374
H. A. Mount Applying Radium to Cure Man's Ills . . . 375--375
G. H. Dacy Putting Paper on a Specification Basis 375--375
H. A. Crafts What About Our Wheat Production? . . . . 376--376
Chauncey P. Carter Why we Need a Separate Trade-Mark Bureau 377--377
Charles W. Geiger Twentieth Century Telegraphy . . . . . . 378--379
James Anderson Taking on Oil a Mile at Sea . . . . . . 380--381
Anonymous Correspondence . . . . . . . . . . . . . 397--397
Victor W. Page The Motor-Driven Commercial Vehicle . . 408--408
Anonymous Inventions: Recently Patented Inventions 410--411
Edmund Conaway Transportation in the Oil Fields, The
Gordon--Bennett Airplane Race, and more 395--396
M. Tevis Forty Centuries Ago --- And Now . . . . 397--397
Robert G. Skerrett Concrete and the Building Crisis . . . . 398--399
Anonymous The Aerial Cruiser . . . . . . . . . . . 400--401
Anonymous Items in Brief . . . . . . . . . . . . . 402--403
Robert June Preventing Rust at High Temperatures . . 404--404
E. C. Crossman A Pocket Machine Gun . . . . . . . . . . 405--405
George H. Dacy What Science did for Cheese . . . . . . 406--407
Anonymous Concerning Back Numbers, Propping Fruit
Trees with Staples . . . . . . . . . . . 416--416
Anonymous Correspondence . . . . . . . . . . . . . 425--425
H. E. Howe The Service of the Chemist . . . . . . . 430--430
Anonymous Inventions New and Interesting . . . . . 432--432
Anonymous Inventions: Recently Patented Inventions 433--434
Anonymous The Household that Packs into a Trunk,
Changes Rule of Road, and more . . . . . 419--421
J. F. Springer Making the Hetch--Hetchy Dam Itself . . 422--422
George Gaulois Piloting the Ship with the Ears, Rust
Preventives . . . . . . . . . . . . . . 423--423
Harry A. Mount A Magnetic-Proof House for the Workers 423--423
C. H. Claudy The Romance of Invention --- XVIII . . . 424--424
Robert C. Brown Painted Coffee . . . . . . . . . . . . . 425--425
R. P. Crawford A Mechanical Age for the Farm . . . . . 426--427
Robert G. Skerrett Extracting Oil by Electrolytic Action 428--429
C. W. Geiger San Francisco's Traffic Convention and
Street Safety Show . . . . . . . . . . . 431--431
James H. Rodgers Something New in Gasoline-Driven Plowing
Machines . . . . . . . . . . . . . . . . 431--431
Anonymous Use of Pulverized Lignite for Fuel in
Australia . . . . . . . . . . . . . . . 440--440
Anonymous Correspondence . . . . . . . . . . . . . 447--447
Henry Norris Russell The Heavens in November, 1920 . . . . . 452--453
Anonymous Inventions New and Interesting . . . . . 454--454
Anonymous Inventions: Recently Patented Inventions 456--456
C. D. Wagoner The True Role of Water Power, Repairing
the Propeller of a Destroyer, and more 441--443
Robert G. Skerrett The Problems of Electrification . . . . 444--444
John L. Von Blon California's Seaweed Industry . . . . . 445--445
George H. Dacy Setting Federal Wheat Standards, Nickel
Babbitt . . . . . . . . . . . . . . . . 445--445
Austin C. Lescarboura Edison's Views on Life and Death . . . . 446--446
W. B. West Revising High Bridge . . . . . . . . . . 448--448
S. R. Winters Getting a Line on Concrete Pipe . . . . 449--449
G. Orb The Architecture of the Concrete Chimney 449--449
W. A. Ehlers Hardening Steel in Gas Fired Furnaces 450--450
John Jay Ide The Last Race for the Gordon Bennett Cup 451--451
Anonymous Do Moths use ``Wireless''? . . . . . . . 460--460
Anonymous Correspondence . . . . . . . . . . . . . 469--469
Anonymous Inventions New and Interesting . . . . . 476--476
Anonymous Inventions: Recently Patented Inventions 478--478
Anonymous Notes and Queries . . . . . . . . . . . 485--487
Anonymous Books: New Books, Etc. . . . . . . . . . 488--488
Anonymous The Type-Reading Optophone, Our Surplus,
Our Ships, and Europe's Need, and more 463--465
H. G. Adams Building Out the Bubonic Plague . . . . 466--466
C. W. Geiger Airbrakes for the Automobile . . . . . . 467--467
G. H. Dacy Automobile Signals for Danger Spots . . 467--467
Raymond Francis Yates Succeeding in Illuminating Engineering 468--468
M. Tevis Do Fish Swim as Airplanes Fly? . . . . . 469--469
Arthur L. Dahl Putting the San Joaquin to Work . . . . 470--471
Hector C. Bywater The ``Super-Destroyer'' . . . . . . . . 472--472
Elmer A. Sperry Golf Without a Caddy . . . . . . . . . . 473--473
Ralph Howard Keeping in Step . . . . . . . . . . . . 473--473
Austin C. Lescarboura Sending Photographs Over Wires . . . . . 474--474
M. Tevis Eliminating the Flash from Rifles and
Big Guns . . . . . . . . . . . . . . . . 484--484
Anonymous Correspondence . . . . . . . . . . . . . 37--37
Anonymous Inventions New and Interesting . . . . . 44--44
Anonymous Inventions: Recently Patented Inventions 46--46
George H. Dacy Fish Fancying and Freak Farming, The . . 31--33
J. F. Springer The Twentieth-Century Lumber-Jack . . . 34--34
Paul Harnden Is the Anchor Safe?, Electrification in
Europe, and more . . . . . . . . . . . . 35--35
Jules Gaudel Handling the Heating-Furnace Doors . . . 35--35
C. H. Claudy Turning the Wheels of a Century Hence
--- II . . . . . . . . . . . . . . . . . 36--36
A. R. Surface Measuring Steam . . . . . . . . . . . . 37--37
M. A. Henry Toys that do Great Work . . . . . . . . 38--39
H. A. Mount The Mechanical Hello Girl . . . . . . . 40--41
Ralph Howard The Rôle of Asbestos . . . . . . . . . . 42--43
Anonymous Correspondence . . . . . . . . . . . . . 497--497
Anonymous Inventions New and Interesting . . . . . 504--504
Anonymous Inventions: Recently Patented Inventions 506--506
Anonymous Notes and Queries . . . . . . . . . . . 512--512
Anonymous In Justice to the War Department, A
Stupendous Rapid-Transit Problem, and
more . . . . . . . . . . . . . . . . . . 492--493
H. A. Crafts The State and the Farmer . . . . . . . . 494--494
Arthur L. Dahl Winter Fuel from Our Woodlands . . . . . 495--495
G. H. Dacy Forewarnings About Forest Fires . . . . 495--495
H. C. Osborn Solving the Labor Problem --- II . . . . 496--496
M. Tevis ``Obstipui, Comae Steterint'' . . . . . 497--497
Harry A. Mount Fuel or Fertilizer? . . . . . . . . . . 498--498
Ralph Howard A Tractor that turns in the Space it
Stands On . . . . . . . . . . . . . . . 499--499
S. R. Winters Gas-Tubing Tests . . . . . . . . . . . . 499--499
Anonymous The Traffic Problem in New York City . . 500--501
William A. McGarry First Aid for Inventors . . . . . . . . 502--503
Anonymous What about Our Wheat Production? . . . . 511--511
Anonymous Correspondence . . . . . . . . . . . . . 521--521
H. E. Howe The Service of the Chemist . . . . . . . 526--527
Victor W. Page The Motor-Driven Commercial Vehicle . . 528--528
Anonymous Inventions: Recently Patented Inventions 530--530
Anonymous A Curious Little Monorail Road in
Ireland, Living Bean Poles, and more . . 515--517
Robert G. Skerrett Something Different in Salvaging
Operations . . . . . . . . . . . . . . . 518--518
George Gaulois A New Magnesium Alloy for Motor Pistons 519--519
A. R. Surface A Giant Ingot-Mold Casting in the Making 519--519
C. H. Claudy Aircraft of the Future . . . . . . . . . 520--520
Anonymous The Five States of Matter . . . . . . . 521--521
Harry A. Mount Our Coal in the Making . . . . . . . . . 522--523
H. C. Hardy Taming the River Nile . . . . . . . . . 524--524
George H. Dacy Keeping Tabs on Bird Peculiarities . . . 525--525
William A. Murrill How Meadow Mice Destroy Trees . . . . . 525--525
Anonymous Correspondence . . . . . . . . . . . . . 545--545
Anonymous Inventions New and Interesting . . . . . 552--552
Anonymous Inventions: Recently Patented Inventions 554--554
Anonymous Notes and Queries . . . . . . . . . . . 559--559
Anonymous Books: New Books, Etc. . . . . . . . . . 559--560
R. P. Nichols Detecting and Preventing Leakage in the
Soft-Coal Pile, Our Navy and the
Japanese Bogy, and more . . . . . . . . 540--542
Frank M. Williams Making the Barge Canal Pay . . . . . . . 542--542
H. J. Shepstone Jerusalem's New Water Works . . . . . . 543--543
Charles P. Fryer Light Burning in California Forests . . 543--543
William Ressman Andrews One Hundred Years of Gas Lighting . . . 544--544
George Gaulois Tuning and Testing . . . . . . . . . . . 545--545
Ladislas d'Orcy The Dawn of American Commercial Aviation 546--546
Harry A. Mount In the Modern Sawmill . . . . . . . . . 548--548
Alfred Gradenwitz Carbonic Acid Gas to Fertilize the Air 549--549
Thomas Ewing Dabney Mechanical Stevedore that Handles
Bananas . . . . . . . . . . . . . . . . 549--549
Anonymous With the Engineers of Industry . . . . . 550--550
Anonymous Roller Bearings for Line Shafts, Gravity
as an Aid to Production, and more . . . 558--558
Henry Norris Russell The Heavens in December, 1920 . . . . . 574--575
Anonymous Inventions New and Interesting . . . . . 576--576
Anonymous Inventions: Recently Patented Inventions 578--578
Anonymous Books: New Books, Etc. . . . . . . . . . 584--584
Ralph Howard Seattle's Record Pier, Where the Lumber
Goes, and more . . . . . . . . . . . . . 563--565
Anonymous That Parallel Postulate . . . . . . . . 565--565
Winthrop Talbot Illiterate Adults . . . . . . . . . . . 566--566
Arthur L. Dahl Motor Trucks in Orchards . . . . . . . . 567--567
H. A. Crafts Cover Crops for Our Orchards . . . . . . 567--567
Anthony M. Rud A Railroad to Hudson Bay! . . . . . . . 568--569
Anonymous Items in Brief . . . . . . . . . . . . . 570--571
Robert G. Skerrett Asbestos in Architecture . . . . . . . . 572--572
Alfred Gradenwitz The Flyer's Artificial Eye and Ear,
Finding a Cool Hat . . . . . . . . . . . 573--573
George Gaulois When a Lighting Fixture is not a
Fixture, What is Dry Rot? . . . . . . . 573--573
Anonymous Correspondence . . . . . . . . . . . . . 593--593
Anonymous Inventions New and Interesting . . . . . 600--600
Anonymous Books: New Books, Etc. . . . . . . . . . 604--604
Anonymous Naval and Merchant Marine, Astronomy,
and more . . . . . . . . . . . . . . . . 589--589
William Benjamin West The World's Greatest Shipping Terminal? 590--590
Samuel J. Record From Wood to Cloth . . . . . . . . . . . 591--591
J. Flagler Wright A Giant of Old . . . . . . . . . . . . . 591--591
William I. Wyman The Needs of the Patent Office . . . . . 592--593
James Anderson Surveying America's Snows . . . . . . . 594--594
Charles N. Winter A Unit System of Freight Transportation 595--595
Hjalmer Lindquist Applying Elevator Principles to the
Railroad Bridge . . . . . . . . . . . . 595--595
Harry A. Mount Wanted: An Inexpensive House . . . . . . 596--596
Harry Chapin Plummer Venezuela's Mountain-Climbing
Oil-Burning Locomotives . . . . . . . . 597--597
Alfred Longville An Airplane with Variable Wing Surface
Area, Paper from Veneer Waste . . . . . 597--597
J. F. Springer Music from Glass . . . . . . . . . . . . 598--599
H. E. Howe The Service of the Chemist . . . . . . . 616--616
Victor W. Page The Motor-Driven Commercial Vehicle . . 617--617
Anonymous Inventions: Recently Patented Inventions 618--618
Anonymous Electric Propulsion for Our Merchant
Marine, Synthetic Benzine and more . . . 605--607
Crittenden Marriott Power and the City . . . . . . . . . . . 608--608
Alfred Longville The Unusual in Passenger-Carrying
Airplanes . . . . . . . . . . . . . . . 609--609
Raymond Francis Yates Succeeding in Signal Engineering . . . . 610--610
E. W. Hulet Solving the Labor Problem --- III . . . 611--611
Francis Z. Hazlett The Farm Tractor in 1920 . . . . . . . . 612--613
Harry A. Mount Our Diamond Industry . . . . . . . . . . 614--614
Anonymous Radio Prize Winner for 1919 . . . . . . 620--620
Anonymous Inventions New and Interesting . . . . . 638--638
Anonymous Index . . . . . . . . . . . . . . . . . 643--644
G. H. Dacy Where Uncle Sam's Income Goes, The
Progress of the Einstein Judges . . . . 625--625
Anonymous The Progress of the Einstein Judges, Are
we to Become the War Pace-Maker?, and
more . . . . . . . . . . . . . . . . . . 626--627
Arthur L. Dahl Our Lagging Gold Production . . . . . . 628--628
J. F. Springer The North Platte Project Today . . . . . 629--629
S. R. Winters How Hard is a Rock? . . . . . . . . . . 629--629
Frederick L. Hoffman Why the Cliff Dwellers Vanished . . . . 630--630
Marcus Benjamin The New President of the American
Association . . . . . . . . . . . . . . 631--631
Sanford G. Plumb Disposing of the Sewage . . . . . . . . 632--633
Harry A. Mount A New American Industry . . . . . . . . 634--634
Ralph Howard Old 999 Still in Service . . . . . . . . 635--635
Anonymous With the Engineers of Industry . . . . . 636--637
Anonymous Correspondence . . . . . . . . . . . . . 61--61
Victor W. Page The Motor-Driven Commercial Vehicle . . 68--68
Anonymous Inventions: Recently Patented Inventions 70--70
Anonymous A Tiny Railroad, at Once a Toy and a
Tool, Stained Glass Once More in Vogue,
and more . . . . . . . . . . . . . . . . 55--57
E. W. Davidson A Chemical Loafer, and How it was Put to
Work . . . . . . . . . . . . . . . . . . 58--58
B. F. Mundorff Digging and Loading in One Motion . . . 59--59
George Gaulois Mining Coal with a Dredge . . . . . . . 59--59
Anonymous Pedigreed Chicks, A New Form of
Vibration Galvanometer . . . . . . . . . 59--59
C. H. Claudy Turning the Wheels of a Century Hence
--- III . . . . . . . . . . . . . . . . 60--60
George F. Paul Fighting Waves with Compressed Air . . . 61--61
H. A. Mount What About Our Forests? . . . . . . . . 62--63
J. Bernard Walker ``Resolute'' Defends the Cup . . . . . . 64--65
Robert H. Moulton The Man Behind Our Daily Bread . . . . . 66--67
Anonymous Preventing the Oxidation of Metals from
Heat, Ball Bearings in Steamship
Engines, Invention in Flashlight
Photography . . . . . . . . . . . . . . 76--76
Anonymous Correspondence . . . . . . . . . . . . . 85--85
Anonymous Inventions New and Interesting . . . . . 91--91
Anonymous Inventions: Recently Patented Inventions 92--92
Anonymous Notes and Queries . . . . . . . . . . . 96--96
Anonymous The Last Word in Wireless --- The New
York Radio Central Station, A Real Start
in Aeronautics, and more . . . . . . . . 79--81
J. F. Springer Descendants of the Water-Wheel . . . . . 82--82
F. Honoré Fifteen Thousand Photographs per Second 83--83
A. R. Surface Better Steel Ingots with Less Waste,
Chemical Warfare Service School . . . . 83--83
Eben Griffiths Lubricating the World . . . . . . . . . 84--84
John T. Bartlett Some Observations on Eggs . . . . . . . 85--85
Anonymous Cutter Versus Sloop . . . . . . . . . . 86--87
H. A. Mount Uncle Samuel's Sweet Tooth . . . . . . . 88--89
Robert G. Skerrett Going to Sea in a Tank . . . . . . . . . 90--90
Anonymous Correspondence . . . . . . . . . . . . . 105--105
Henry Norris Russell The Heavens in August, 1920 . . . . . . 109--109
H. E. Howe The Service of the Chemist . . . . . . . 110--110
Anonymous Inventions New and Interesting . . . . . 111--111
M. A. Henry Keeping the River Tunnel Dry,
Spontaneous Combustion Temperatures of
Liquid Fuels, and more . . . . . . . . . 99--101
A. Hooton Blackiston Our Future Oil Supply . . . . . . . . . 102--102
H. A. Mount Scrapping Good Machinery for Better
Service . . . . . . . . . . . . . . . . 103--103
S. R. Winters How a Road Rests in its Bed, Soap from
Lignite Tar Oils . . . . . . . . . . . . 103--103
C. H. Claudy The Romance of Invention --- XV . . . . 104--104
J. F. Springer Our Mechanical Eyes . . . . . . . . . . 106--106
George H. Dacy Learning by Seeing . . . . . . . . . . . 107--107
J. E. D. Meador Keeping the Camera on an Even Keel,
Telephoning in Cipher . . . . . . . . . 107--107
J. Bernard Walker The America's Cup Races . . . . . . . . 108--108
Anonymous Australian ``Blackboy'' Tree . . . . . . 116--116
Anonymous Inventions New and Interesting . . . . . 132--132
Anonymous Inventions: Recently Patented Inventions 134--134
Anonymous Notes and Queries . . . . . . . . . . . 143--143
Anonymous Books: New Books, Etc. . . . . . . . . . 144--144
Anonymous Fair Weather Yachts, Wood as a
Structural Material, and more . . . . . 120--121
H. A. Mount In the Wake of the Woodsman . . . . . . 122--122
E. W. Davidson The Last Word in Searchlights . . . . . 123--123
M. Tevis Guiding Ships by Electric Cables . . . . 123--123
John Boyle, Jr. Who Invented it First? . . . . . . . . . 124--124
Herbert T. Wade The Metric System . . . . . . . . . . . 125--125
Robert G. Skerrett Our Deep-Sea Freighters . . . . . . . . 126--127
J. Bernard Walker The America's Cup Races . . . . . . . . 128--129
George Gaulois The Romance of Tungsten . . . . . . . . 130--131
Anonymous Gas-Filled Tungsten Lamp Patent
Sustained, Right Foundation for Our
Roads, and more . . . . . . . . . . . . 141--142
Anonymous Correspondence . . . . . . . . . . . . . 153--153
Anonymous Inventions New and Interesting . . . . . 160--160
Anonymous Inventions: Recently Patented Inventions 162--162
Anonymous If Our Cereal Harvest Should Descend on
New York City, Phosphoric Acid and
Potash Now Produced, and more . . . . . 147--149
Robert G. Skerrett Reducing Trade Routes with Submarine
Freighters . . . . . . . . . . . . . . . 150--151
Raymond Francis Yates Succeeding in Railway Mechanical
Engineering . . . . . . . . . . . . . . 152--152
Robert Carlton Brown Electrification in Brazil . . . . . . . 153--153
Samuel O. Hoffman Seeing in the Dark . . . . . . . . . . . 154--155
J. T. Rowland Pulp Wood from Labrador . . . . . . . . 156--156
Arthur L. Dahl Harvesting the Hay the Latest Way . . . 157--157
Alfred Longville Shade Trees for City Streets, Testing
Biological Products in England, and more 157--157
J. Bernard Walker The Racing Airplane of the Future . . . 158--159
Anonymous Correspondence . . . . . . . . . . . . . 177--177
Victor W. Page The Motor-Driven Commercial Vehicle . . 186--186
Anonymous Inventions: Recently Patented Inventions 187--188
Anonymous Emptying Eight Freight Cars into a
Thimble, No Relation Between Cultivation
and Rainfall, and more . . . . . . . . . 171--173
Harry A. Mount Is there a Coal Shortage? . . . . . . . 174--175
Richard L. Humphrey An Engineering Bulwark . . . . . . . . . 176--176
George A. Dacy Reclaiming Salt Surfeited Soils . . . . 177--177
Anonymous The World's Largest Crane . . . . . . . 178--179
Wendell M. Whiting Record Weather . . . . . . . . . . . . . 180--181
C. H. Claudy The Romance of Invention --- XVI . . . . 182--183
Anonymous Return Loads Bureau Idea in England,
Converting Garbage into a Real Asset . . 192--192
Anonymous Correspondence . . . . . . . . . . . . . 197--197
Anonymous Inventions New and Interesting . . . . . 208--208
George Gaulois New York's Radio Pilot Cable, To
Preserve a Beautiful and Historic Work,
and more . . . . . . . . . . . . . . . . 195--196
H. A. Crafts Gas Engine Versus Steam Engine . . . . . 197--197
J. F. Springer A Neat Problem in Hydraulics . . . . . . 198--198
George H. Dacy How a State May Grow a Timber Supply . . 199--199
M. A. Henry Varying the Airplane Propeller Pitch,
Joseph Norman Lockyer, K.C.B., and more 199--199
Anonymous What has Been Said About Einstein . . . 200--201
H. A. Mount Fire Without Firemen . . . . . . . . . . 202--203
Charles N. Winter Oil as a Locomotive Fuel . . . . . . . . 203--203
Robert H. Moulton Wood that is Stronger than Steel . . . . 204--205
Anonymous Items in Brief . . . . . . . . . . . . . 206--207
Anonymous Correspondence . . . . . . . . . . . . . 7--7
Henry Norris Russell The Heavens in January, 1921 . . . . . . 12--13
Anonymous Inventions New and Interesting . . . . . 14--14
Anonymous Recently Patented Inventions . . . . . . 16--16
Anonymous Review of the Year 1920 . . . . . . . . 2--3
Victor W. Page The Trend of Design for 1921 . . . . . . 4--5
Austin C. Lescarboura Automotive Milestones . . . . . . . . . 6--6
W. E. Vogelback The Trend of Specialization . . . . . . 7--7
Victor W. Page Where is that Rattle? . . . . . . . . . 8--8
Anonymous European Automobile Design for 1921 . . 9--9
Louis C. Kane Mapping the Waters Along Our Coasts . . 10--11
Anonymous The Role of the Patent System in the
United States . . . . . . . . . . . . . 20--20
Anonymous Correspondence . . . . . . . . . . . . . 187--187
Raymond Smith Dugan The Heavens in March, 1921 . . . . . . . 192--192
Anonymous Inventions New and Interesting . . . . . 193--193
Anonymous Inventions: Recently Patented Inventions 194--194
Anonymous What Becomes of Our Coal?, Honeycombs of
Aluminum, and more . . . . . . . . . . . 181--183
Anonymous Who Shall Work the Farms? --- I . . . . 184--184
William A. McGarry Salvaging Torpedo Boats for Peaceful
Uses . . . . . . . . . . . . . . . . . . 185--185
A. R. Surface Copper in Steel and the Corrosion of
Cars . . . . . . . . . . . . . . . . . . 185--185
Frank E. Law From the Einstein Contest --- III . . . 186--187
Harry A. Mount Making Weather to Order . . . . . . . . 188--189
Robert G. Skerrett Air Plus Oil Equals More Oil . . . . . . 190--190
Wm. A. Murrill The Papaya, or Tree Melon . . . . . . . 191--191
T. M. Fraser The Trumpeter Swan . . . . . . . . . . . 191--191
H. E. Howe The Service of the Chemist . . . . . . . 212--212
Anonymous Inventions New and Interesting . . . . . 214--214
Anonymous Notes and Queries . . . . . . . . . . . 215--215
Anonymous Books: New Books, etc. . . . . . . . . . 215--215
Anonymous Inventions: Recently Patented Inventions 216--216
Charles Nevers Holmes The Heart as a Pumping Engine . . . . . 201--201
Anonymous ``A Strong Navy'', Einstein's Finite
Universe, and more . . . . . . . . . . . 202--203
J. F. Springer The Falsework for a Big Dam . . . . . . 204--204
Ralph Howard Making Electric Insulators of Porcelain 205--205
S. R. Winters A Measure of Interior Lighting . . . . . 205--205
Charles E. Duryea Brief Facts About Money . . . . . . . . 206--207
George H. Dacy Who Shall Work the Farms? --- II . . . . 208--209
Anonymous Solving the Labor Problem --- IV . . . . 210--210
Anonymous Stray Current Electrolysis . . . . . . . 220--220
Anonymous Correspondence . . . . . . . . . . . . . 227--227
Victor W. Page The Motor-Driven Commercial Vehicle . . 234--234
Anonymous Inventions: Recently Patented Inventions 236--236
Anonymous Hudson River Bridge or Tunnel ---
Which?, Our Merchant Fleet and Free
Ports, and more . . . . . . . . . . . . 222--223
Anonymous Reorganizing the Port of New York . . . 224--224
Ralph Howard Better Railway Ticket Selling, Rats and
Canvas . . . . . . . . . . . . . . . . . 225--225
George F. Paul Outwitting the French Customs . . . . . 225--225
Anonymous From the Einstein Contest --- IV . . . . 226--226
Victor W. Page The Balky Motor . . . . . . . . . . . . 227--227
J. H. Armstrong Canada's New Parliament Buildings . . . 228--229
C. H. Claudy The Romance of Invention --- XX . . . . 230--231
Henry Vendelmans Making a Forest to Order . . . . . . . . 232--233
Anonymous Correspondence . . . . . . . . . . . . . 247--247
Anonymous Inventions New and Interesting . . . . . 254--254
Anonymous Inventions: Recently Patented Inventions 256--256
Ralph Howard Railroad Accidents and How They Work,
Our Attitude Toward the Port and Harbor
Plan, and more . . . . . . . . . . . . . 241--243
Anonymous The Electric Battleship . . . . . . . . 244--245
Robert G. Skerrett Canada's Superpower Zone . . . . . . . . 246--246
Leigh Page Relativity and a Rotating Disk . . . . . 247--247
Dard Hunter Watermarking Hand-Made Papers . . . . . 248--249
Arthur L. Dahl Putting Rejected Oranges to Work . . . . 250--251
Anonymous With the Engineers of Industry . . . . . 252--253
Anonymous Correspondence . . . . . . . . . . . . . 267--267
Henry Norris Russell The Heavens in April, 1921 . . . . . . . 272--272
Anonymous Inventions New and Interesting . . . . . 274--274
Anonymous Inventions: Recently Patented Inventions 276--276
Anonymous A Call for the Automatic Stop, Do You
Want an Airship?, and more . . . . . . . 262--263
C. H. Claudy Twelve Hundred Charts at a Third of a
Cent . . . . . . . . . . . . . . . . . . 264--264
Harry A. Mount When Humpty-Dumpty Travels . . . . . . . 265--265
M. A. Henry The Why of Luminous Paints . . . . . . . 265--265
Robert G. Skerrett Making the Most of Niagara . . . . . . . 266--266
Anonymous A Problem of Electric Drive . . . . . . 267--267
S. R. Winters Jobs for Sawdust . . . . . . . . . . . . 268--269
Albert A. Hopkins The Musical Hospital . . . . . . . . . . 270--271
W. A. Kimball Optical Tricks with Electric Sparks,
Reclamation Project in Northeastern
Brazil . . . . . . . . . . . . . . . . . 273--273
Charles W. Gilmore An Extinct Sea Lizard from Western
Kansas . . . . . . . . . . . . . . . . . 273--273
H. E. Howe The Service of the Chemist . . . . . . . 292--293
Anonymous Inventions New and Interesting . . . . . 294--294
Anonymous Inventions: Recently Patented Inventions 295--296
Anonymous Books: New Books, etc. . . . . . . . . . 300--300
Anonymous Army Engineers Report Against Ocean Ship
Canal, The Battle of the Brakes, and
more . . . . . . . . . . . . . . . . . . 282--283
S. R. Winters Uncle Sam's Artificial Fish . . . . . . 284--284
Alfred Longville Logging by Electricity . . . . . . . . . 285--285
James Anderson The Civil War Carved in Granite . . . . 285--285
Arthur L. Dahl Some Special Uses of Redwood . . . . . . 286--286
Robert G. Skerrett Rails and Railroads . . . . . . . . . . 287--287
C. H. Claudy Two Hundred Thousand Photographs per
Minute . . . . . . . . . . . . . . . . . 288--289
Hector C. Bywater The British Fleet of Today . . . . . . . 290--291
Victor W. Page The Motor-Driven Commercial Vehicle . . 314--314
Anonymous Books: New Books, Etc. . . . . . . . . . 315--315
Anonymous Inventions: Recently Patented Inventions 316--316
Anonymous A New Form of Hydraulic Propulsion,
Tidal Power in France, and more . . . . 301--303
Robert G. Skerrett Germany's Brown Coal . . . . . . . . . . 304--304
M. A. Henry From Brewing Beer to Raising Mushrooms 305--305
S. R. Winters Testing Roadbed Conditions by the
Resistance Method . . . . . . . . . . . 305--305
Charles Frederick Carter Solving the Labor Problem --- V . . . . 306--307
J. F. Springer Preventing the Roll of Ships . . . . . . 308--309
Harry A. Mount Finding Jobs for Radium . . . . . . . . 310--311
Lyne O. Battle The Battleship and the Junk Heap . . . . 312--313
Anonymous Correspondence . . . . . . . . . . . . . 329--329
Anonymous Inventions New and Interesting . . . . . 334--334
Anonymous Inventions: Recently Patented Inventions 335--336
George Philip Paul Man-Killing Insects, The Hudson River
Bridge, and more . . . . . . . . . . . . 321--323
Anonymous The Hudson River Bridge . . . . . . . . 324--324
S. R. Winters Milk Without Cows . . . . . . . . . . . 325--325
Charles P. Steinmetz Stopping Our Coal Leaks . . . . . . . . 325--325
John T. Rowland The Sailing Ship's Return . . . . . . . 326--326
William Henry Bowling On the Green . . . . . . . . . . 327--327
Alfred Gradenwitz Cinematography at the Winning-Post . . . 327--327
Raymond Francis Yates Succeeding in Scientific Farming . . . . 328--328
Anonymous The Train Director and his Work . . . . 329--329
Leonard Matters Hydroelectric Power in Argentina . . . . 330--331
S. R. Winters A Hospital for Mail Bags . . . . . . . . 332--333
Anonymous New Remedy for Healing Wounds . . . . . 340--340
Anonymous Correspondence . . . . . . . . . . . . . 349--349
Anonymous Inventions New and Interesting . . . . . 354--354
Anonymous Inventions: Recently Patented Inventions 356--356
Anonymous Books: New Books, Etc. . . . . . . . . . 360--360
Anonymous Phantom Ships, Measuring Impact Effects
on Roads, and more . . . . . . . . . . . 342--343
Robert G. Skerrett American Lignite Coals . . . . . . . . . 344--344
James Anderson Recruits for the World's Biggest Fish
Show . . . . . . . . . . . . . . . . . . 345--345
S. R. Winters What Happens to Ground Water and Why . . 345--345
Anonymous The Vest-Pocket Automobile . . . . . . . 346--347
Reginald A. Fessenden ``Banking'' Electricity for Universal
Use . . . . . . . . . . . . . . . . . . 348--348
J. F. Springer A City Without Water . . . . . . . . . . 350--351
Anonymous With the Engineers of Industry . . . . . 352--353
Anonymous Dyspepsia After Six Months . . . . . . . 359--359
Anonymous Correspondence . . . . . . . . . . . . . 369--369
Henry Norris Russell The Heavens in May, 1921 . . . . . . . . 372--373
Anonymous Inventions New and Interesting . . . . . 374--374
Anonymous Inventions: Recently Patented Inventions 376--376
Anonymous Books: New Books, Etc. . . . . . . . . . 380--380
John Anson Ford Tilting Grain Cars in All Directions to
Empty Them, The Roger Bacon Manuscript,
and more . . . . . . . . . . . . . . . . 361--363
W. B. West America's Greatest Dam . . . . . . . . . 364--365
Albert A. Hopkins Looking Backward Four Thousand Years . . 366--367
Austin C. Lescarboura Fuel Conservation Opinions --- I . . . . 368--368
F. Rowlinson Cold Vulcanization of Rubber . . . . . . 369--369
Robert G. Skerrett Machine-Made Window Glass . . . . . . . 370--371
Anonymous How to Tell Birch, Beech and Maple Apart 379--379
Anonymous Correspondence . . . . . . . . . . . . . 27--27
Anonymous Inventions New and Interesting . . . . . 34--34
Anonymous Inventions: Recently Patented Inventions 36--36
M. Tevis The Solar System in Miniature . . . . . 21--21
Anonymous World Hunger for Disarmament, A
Neglected Transportation Facility, and
more . . . . . . . . . . . . . . . . . . 22--23
Victor W. Page Doing Away with the Loafing Charge . . . 24--24
Bertram W. Williams Aircraft for Pleasure . . . . . . . . . 25--25
Ralph Howard The Efficient Tire Pump . . . . . . . . 25--25
Austin C. Lescarboura Fifty Motor Truck Opinions . . . . . . . 26--26
George Gaulois X-Ray Tubes by the Hundreds . . . . . . 28--29
Victor W. Page The Trend of Motor Truck Design for 1921 30--31
C. H. Claudy Something for Nothing . . . . . . . . . 32--32
Anonymous Leather Waste for Heels in Germany . . . 40--40
Anonymous Correspondence . . . . . . . . . . . . . 387--387
H. E. Howe The Service of the Chemist . . . . . . . 392--393
Anonymous Inventions New and Interesting . . . . . 394--394
Anonymous Inventions: Recently Patented Inventions 396--396
Anonymous A Giant Among Mine Hoists, Who Is
Delaying Disarmament?, and more . . . . 381--383
Robert G. Skerrett Keeping Our Railroads Up to the Mark . . 384--384
Thomas M. Fraser Canada's Big Oil Strike . . . . . . . . 385--385
O. R. Geyer Motorizing the Rural Church . . . . . . 385--385
Austin C. Lescarboura Fuel Conservation Opinions --- II . . . 386--386
Ralph Howard Farming with Electricity . . . . . . . . 387--387
S. R. Winters When Oysters Are in Season . . . . . . . 388--389
J. F. Springer Fixed Stars That Are Not Fixed . . . . . 390--391
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 414--414
Anonymous Inventions: Recently Patented Inventions 416--416
Anonymous Co-Ordinating our Waterways, The
``Mystery Towers'' Explained, and more 402--403
Robert G. Skerrett Putting Waste Metals to Work . . . . . . 404--405
William Henry The Fragrant Weed . . . . . . . . . . . 406--407
H. Gardner McKerrow The Truth About the Dye Industry . . . . 408--408
Anonymous The Giant of the Skies . . . . . . . . . 409--409
Anonymous ``Einstein's Theories of Relativity and
Gravitation'' . . . . . . . . . . . . . 409--409
Arthur H. Lynch Radio with the Arc Transmitter . . . . . 410--411
Hector C. Bywater A Super-Dreadnaught as Target . . . . . 412--413
Anonymous The Effect of Weight or Pressure . . . . 415--415
Anonymous Correspondence . . . . . . . . . . . . . 429--429
Anonymous Inventions New and Interesting . . . . . 433--434
Anonymous Inventions: Recently Patented Inventions 438--438
Anonymous The Senate and the People, A New
Dispensary of Popular Science, and more 422--423
Harry A. Mount The One-Piece House . . . . . . . . . . 424--425
Kenneth E. Stuart Electric Trains without Crews . . . . . 426--426
S. R. Winters Molasses for Fuel . . . . . . . . . . . 427--427
A. R. Surface American Magnesite, Army vs. Navy Ration 427--427
C. H. Claudy Reorganizing Our Government Machinery
--- I . . . . . . . . . . . . . . . . . 428--428
Anonymous Super-Speed Propellers . . . . . . . . . 430--431
Anonymous The Roger Bacon Manuscript . . . . . . . 432--432
Anonymous With the Engineers of Industry . . . . . 436--436
Anonymous Correspondence . . . . . . . . . . . . . 449--449
Henry Norris Russell The Heavens in June, 1921 . . . . . . . 452--453
Anonymous Inventions New and Interesting . . . . . 454--454
Anonymous Inventions: Recently Patented Inventions 456--456
Anonymous A Submarine Plow for the Submarine
Telephone Cable, New Way of Singeing
Chickens, and more . . . . . . . . . . . 441--443
Samuel J. Record Our Tropical Timber Trade . . . . . . . 444--444
Harry A. Mount The Burning Mines of the Hocking Valley 445--445
A. Gradenwitz Weighing the Ten-Millionth of a
Milligram . . . . . . . . . . . . . . . 445--445
George H. Dacy Revolutionizing an Industry . . . . . . 446--446
George Gaulois Is the Practical Helicopter in Sight?,
Measuring Vapor Pressures, and more . . 447--447
C. H. Claudy Reorganizing Our Government Machinery
--- II . . . . . . . . . . . . . . . . . 448--448
L. H. Rosenberg A New Era in Wireless . . . . . . . . . 449--449
J. Bern Walker A Study in Magnitude . . . . . . . . . . 450--451
Anonymous Correspondence . . . . . . . . . . . . . 469--469
H. E. Howe The Service of the Chemist . . . . . . . 472--473
Anonymous Inventions New and Interesting . . . . . 474--475
Anonymous Inventions: Recently Patented Inventions 476--476
Anonymous Books: New Books, Etc. . . . . . . . . . 478--478
Anonymous The Yangtse Shallow-Draft Steamer
``Anning'', Aerial Radio Protection, and
more . . . . . . . . . . . . . . . . . . 461--463
Howard Greene Putting Motion into Mechanical Drawings 464--464
Ralph Howard Counting Electrons . . . . . . . . . . . 465--465
S. R. Winters Diagnosis by Wireless . . . . . . . . . 465--465
Anonymous Below Zero . . . . . . . . . . . . . . . 466--467
Anonymous An Alternative to Einstein . . . . . . . 468--468
Thomas J. Keenan New Sources of Pulp and Paper . . . . . 469--469
J. F. Springer Sixty Tons Per Minute . . . . . . . . . 470--470
George H. Dacy Valuable Binder Material from Waste,
Giant Crane Lifts its Smaller Brother 471--471
Anonymous Correspondence . . . . . . . . . . . . . 489--489
Victor W. Page The Motor-Driven Commercial Vehicle . . 495--495
Anonymous Inventions: Recently Patented Inventions 496--496
Anonymous Books: New Books, Etc. . . . . . . . . . 497--497
Anonymous The Peril of Floods, Enormous Waste in
Industries, and more . . . . . . . . . . 482--483
Charles Frederick Carter What is the Trouble with the Railroads? 484--484
J. F. Springer The Storm King Road . . . . . . . . . . 485--485
Rozel Gotthold Controlling the Lower Mississippi . . . 485--485
Robert G. Skerrett Facts About Concrete . . . . . . . . . . 486--487
Charles E. Duryea Brief Fallacies About Money . . . . . . 488--488
Anonymous Red Rust in Hot Water Pipes and the
Cause, A New Dental Anesthetic, and more 489--489
J. F. Springer The Craters of the Moon . . . . . . . . 490--491
William A. Murrill Cacti and Their Uses . . . . . . . . . . 492--493
Anonymous Colorado's Cloud-Burst . . . . . . . . . 494--494
Anonymous Correspondence . . . . . . . . . . . . . 509--509
Anonymous Inventions New and Interesting . . . . . 514--514
Anonymous Inventions: Recently Patented Inventions 518--518
Anonymous Index . . . . . . . . . . . . . . . . . 522--522
Anonymous Compromise, with a Big Stick, Shipping
Troubles, and more . . . . . . . . . . . 502--503
J. F. Springer Canada's Great Ship Canal . . . . . . . 504--505
Anonymous Improvements in Train Braking . . . . . 506--508
William Crowder How the Lower Animals See . . . . . . . 509--509
Anonymous Tricks of Traffic Control . . . . . . . 510--510
Charles W. Geiger The Up-to-the-Minute Laundry . . . . . . 511--511
William Henry Racing with Model Yachts . . . . . . . . 511--511
Bridgman Harvard Concerning Ice . . . . . . . . . . . . . 512--513
Anonymous With the Engineers of Industry . . . . . 516--516
Anonymous Attention to Details Essential to
Efficiency . . . . . . . . . . . . . . . 519--519
Victor W. Page The Motor-Driven Commercial Vehicle . . 54--54
Anonymous Inventions: Recently Patented Inventions 56--56
Anonymous A Billion Dollars, A New Airplane Wing,
and more . . . . . . . . . . . . . . . . 41--43
J. F. Springer Canada's Niagara Development . . . . . . 44--44
Ralph Howard Fifth Avenue's Traffic Tower . . . . . . 45--45
S. E. Winters Sunshine and Balloon Silk . . . . . . . 45--45
C. H. Claudy The Romance of Invention --- XIX . . . . 46--47
S. R. Winters Insect Ravages in Our Forests . . . . . 48--49
Anonymous Building a Rigid Airship . . . . . . . . 50--51
G. Orb The Story of the Prune . . . . . . . . . 52--53
Anonymous Correspondence . . . . . . . . . . . . . 67--67
H. E. Howe Service of the Chemist . . . . . . . . . 72--73
Anonymous Inventions New and Interesting . . . . . 74--74
Anonymous Inventions: Recently Patented Inventions 78--78
Anonymous Notes and Queries . . . . . . . . . . . 80--80
Anonymous Books: New Books, Etc. . . . . . . . . . 80--80
Anonymous Labor and the Industrial Engineer,
Crippling American Aviation, and more 62--63
James Anderson Paper from Alaska . . . . . . . . . . . 64--64
Robert G. Skerrett Every Automobile its Own Elevator . . . 65--65
Harold F. Blanchard A Near-Diesel Engine for the Airplane 65--65
Charles Frederick Carter The Case for the Steam Locomotive . . . 66--66
Anonymous Developing One Million Horsepower from
Tidal Energy . . . . . . . . . . . . . . 67--67
Ralph Howard A Daring Ship Design . . . . . . . . . . 68--69
Anonymous Panama Canal Facts . . . . . . . . . . . 70--71
Anonymous ``Koka Seki'' and its Uses . . . . . . . 79--79
Anonymous Inventions New and Interesting . . . . . 94--94
Anonymous Inventions: Recently Patented Inventions 96--96
Ralph Howard Prices --- Today, Yesterday and Before
the War, The Einstein Award, and more 81--83
J. F. Springer The Mississippi's Mouth . . . . . . . . 84--84
Alfred Longville New York's Snow-Fighting Tractor Plows 85--85
George Gaulois The Motor Sled Versus the Dog Sled . . . 85--85
S. G. Roberts Power in Big Packages . . . . . . . . . 86--86
Anonymous A Matter of Definition . . . . . . . . . 87--87
Henry P. Westcott Where the Printer gets his Ink . . . . . 88--88
P. W. Claassen Are We Abusing Our Water Resources? . . 90--90
J. Bernard Walker New Battle-Cruiser ``Constellation'' . . 91--91
Anonymous With the Engineers of Industry . . . . . 92--93
Henry Norris Russell The Heavens in February, 1921 . . . . . 112--113
Anonymous Inventions New and Interesting . . . . . 114--114
Anonymous Inventions: Recently Patented Inventions 116--116
Charles C. Phelps Stopping the Chimney Thief, How the
Einstein Contest Worked, and more . . . 101--103
M. R. Reynolds Open Roads All Winter . . . . . . . . . 104--104
Harry A. Mount Stunts of the Stage . . . . . . . . . . 105--105
George Gaulois The World War on Rats . . . . . . . . . 105--105
Anonymous Relativity . . . . . . . . . . . . . . . 106--107
Anonymous Some Einstein Contest Personalities . . 107--107
J. F. Springer The Big Dam on the Little San Diego . . 108--109
Jacques Boyer Artificial Ammonia . . . . . . . . . . . 110--111
Anonymous Correspondence . . . . . . . . . . . . . 127--127
Anonymous Inventions New and Interesting . . . . . 134--135
Anonymous Inventions: Recently Patented Inventions 136--136
Anonymous A Second Panama Canal, The King's Cup
Ocean Race, and more . . . . . . . . . . 122--123
William A. McGarry A Giant Job of Underpinning . . . . . . 124--124
Corley P. McDarment Why Balloons Bounce Off Clouds . . . . . 125--125
W. C. White The Vacuum Tube as an Engineering
Problem . . . . . . . . . . . . . . . . 125--125
C. H. Thomas Pumping Coal from Mine to Seaboard . . . 126--126
Herbert T. Walker Little Things that Count Big . . . . . . 126--126
Leon Augustus Hausman How we Think . . . . . . . . . . . . . . 128--128
Anonymous Leading Navies Compared . . . . . . . . 130--131
G. A. McWilliams The Engineers of Ancient Egypt . . . . . 132--133
Anonymous Industrial Skin Hazards . . . . . . . . 140--140
Anonymous Correspondence . . . . . . . . . . . . . 147--147
Victor W. Page The Motor-Driven Commercial Vehicle . . 154--154
Anonymous Inventions: Recently Patented Inventions 156--156
Charles Nevers Holmes ``The Breath of Life'', Copper Etching
Facts, and more . . . . . . . . . . . . 141--143
Robert G. Skerrett Shipping Coal by Wire . . . . . . . . . 144--144
A. R. Surface How Pullman Space is Sold . . . . . . . 145--145
Edmund Conaway A Rural School Museum . . . . . . . . . 145--145
Anonymous The New Concepts of Time and Space . . . 146--147
Frederick S. Mills Film Lighting as a Fine Art . . . . . . 148--148
George Gaulois The Army School for Weather Observers 149--149
S. R. Winters Round Seeds and Mechanical Ingenuity,
Making Porous Bricks of Slag . . . . . . 149--149
Arthur L. Dahl Salt from the Sea . . . . . . . . . . . 150--150
Ralph Howard Solid Fuel for the Gas Engine . . . . . 151--151
Jacques Boyer Keeping Check on Factory Air . . . . . . 151--151
Anonymous Why Not Radio? . . . . . . . . . . . . . 152--153
Anonymous A New Wheatstone Bridge, New Process for
Cracking Oils . . . . . . . . . . . . . 160--160
Anonymous Correspondence . . . . . . . . . . . . . 167--167
Anonymous Inventions New and Interesting . . . . . 174--174
Anonymous Inventions: Recently Patented Inventions 176--176
Anonymous Books: New Books, Etc. . . . . . . . . . 178--180
Anonymous The Latest Japanese Battleship
``Nagato'', Development of Germany's
Inland Waterways, and more . . . . . . . 161--163
J. F. Springer The Big Eddy Dam . . . . . . . . . . . . 164--165
R. H. Goddard That Moon Rocket Proposition . . . . . . 166--166
Ernest Townsend Williamson Shall We Have a National Trade-Mark? . . 167--167
Ladislas d'Orcy Winged Transportation . . . . . . . . . 168--169
L. Lodian Latin Foods in Old New York . . . . . . 170--170
R. G. Skerrett A Phonograph that is Always at its Best,
Power Transmission by Fluid Waves, and
more . . . . . . . . . . . . . . . . . . 171--171
Anonymous With the Engineers of Industry . . . . . 172--173
Anonymous Correspondence . . . . . . . . . . . . . 11--11
Henry Norris Russell The Heavens for July, 1921 . . . . . . . 12--12
Anonymous Inventions New and Interesting . . . . . 14--14
Anonymous The Limitations of Aerial Bombing, The
Lampert Bill, and more . . . . . . . . . 2--2
Anonymous Naval and Merchant Marine, Science,
Automobile . . . . . . . . . . . . . . . 3--3
Anonymous Is it to be Bomb or Battleship? . . . . 4--5
Robert A. Campbell Saving the Sockeye . . . . . . . . . . . 6--7
Anonymous The Rag-Doll Seed-Tester, A New Means of
Carrying Plant Disease, and more . . . . 7--7
Anonymous Bridging the Delaware at Philadelphia 8--9
Harry A. Mount Animal Tissue that Does not Die . . . . 10--10
Robert G. Skerrett The Condensing of Milk . . . . . . . . . 11--11
Anonymous A Rocking Stone from Buenos Aires,
Berlin's Forthcoming Skyscraper, and
more . . . . . . . . . . . . . . . . . . 13--13
Anonymous Correspondence . . . . . . . . . . . . . 165--165
Henry Norris Russell The Heavens in September, 1921 . . . . . 168--168
Anonymous Inventions New and Interesting . . . . . 170--170
Anonymous Inventions: Recently Patented Inventions 172--172
Crede Haskins Calhoun Water Supply of the Panama Canal . . . . 157--157
Anonymous The Loss of ``ZR-2'', Uncharted Perils
of the Road, and more . . . . . . . . . 158--159
George H. Dacy Our ``ZR-2'' Airship and its Shed . . . 160--160
C. O. Liljegren The Motor Clipper . . . . . . . . . . . 162--162
Harry A. Mount Industrial Alcohol . . . . . . . . . . . 164--164
Anonymous From Swords to Plowshares . . . . . . . 165--165
G. A. Orb Cultivated Rubber . . . . . . . . . . . 166--166
Anonymous Correspondence . . . . . . . . . . . . . 185--185
H. E. Howe and
Chemical Engineer Service of the Chemist . . . . . . . . . 188--188
Anonymous Inventions New and Interesting . . . . . 189--189
Anonymous Announcement, Bending Strength of
``ZR-2'', and more . . . . . . . . . . . 177--179
George H. Dacy The Geologist's Part in Road Building 180--180
Harry A. Mount Developing Motion Picture Film with
Automatic Machinery . . . . . . . . . . 181--181
John Edwin Hogg Water Level and Weather Observation
Station at the Salton Sea . . . . . . . 181--181
S. R. Winters The All-Around Vegetable . . . . . . . . 182--183
Jennings C. Wise The Economic Aspects of Mobilization . . 184--184
John Lathrop Rapid Transit Arithmetic . . . . . . . . 185--185
C. H. Claudy From Star to Chronometer via Radio . . . 186--187
Anonymous Using Cadmium to Galvanize Iron . . . . 192--192
Anonymous Correspondence . . . . . . . . . . . . . 201--201
Victor W. Page The Motor-Driven Commercial Vehicle . . 206--206
Anonymous Inventions: Recently Patented Inventions 208--208
Anonymous A New Type of Ferryboat, Rings Bell if
Water is Found in Gas, and more . . . . 193--195
Avis Gordon Vestal A New Profession . . . . . . . . . . . . 196--196
William A. McGarry Philadelphia's Tear Bombs and Mobs . . . 197--197
A. Dagory Copper-Fouling of Ordnance Materials . . 197--197
J. F. Springer A Problem in Levels . . . . . . . . . . 198--199
Ladislas d'Orcy The Lesson of the ``ZR-2'' Disaster . . 200--200
Mary Ethel Jameson Group Medicine . . . . . . . . . . . . . 201--201
L. Lodian Fish Stories that are Stranger than
Fiction . . . . . . . . . . . . . . . . 202--203
C. W. Mehling and
Jas. W. Carpenter When Electricity Fires the Enamel Ware 204--205
Anonymous Dyes for China . . . . . . . . . . . . . 212--212
Anonymous Correspondence . . . . . . . . . . . . . 219--219
Anonymous Inventions New and Interesting . . . . . 226--226
Anonymous Is Airship Travel Profitable?, The
Divining Rod, and more . . . . . . . . . 214--215
George H. Dacy Saving Food Fish by the Hundred Million 216--217
Charles Frederick Carter Keeping the Railroads Afloat . . . . . . 218--218
E. F. Cone The Divining Rod Made Respectable . . . 219--219
E. W. Davidson A. Bridge Building Record . . . . . . . 220--221
Anonymous Glass Tubes by Machine . . . . . . . . . 222--223
George H. Dacy How Much Water for the Crops ? . . . . . 224--225
Anonymous Pearls in Plants, Fooling Fish with
Colored Nets . . . . . . . . . . . . . . 227--227
Henry Norris Russell The Heavens in October, 1921 . . . . . . 240--240
Anonymous Inventions New and Interesting . . . . . 242--242
Anonymous Inventions: Recently Patented Inventions 244--244
Anonymous Books: New Books, Etc. . . . . . . . . . 248--248
E. F. Cone Something New in Electric Furnaces . . . 229--229
Anonymous Artesian Reservoirs for Intermittent
Supplies of Energy, The Illuminated
Highway, and more . . . . . . . . . . . 229--231
John L. Von Blon Death Valley Transportation . . . . . . 232--232
S. R. Winters Getting a Line on the Higher Atmospheres 233--233
Ralph Howard The Parseval Semi-Rigid Airship
``PL-27'', Curing Leprosy with Antimony 233--233
E. C. Crossman Needed --- A New Army Uniform . . . . . 234--235
Raymond Francis Yates Succeeding in Scientific Research . . . 236--236
Albert A. Hopkins The Role of Chemistry . . . . . . . . . 237--237
T. Gibb Juice of the Poppy . . . . . . . . . . . 238--239
Anonymous Doing Away with Postage Stamps, From
Greenhouse to Swimming Pool, and more 241--241
Anonymous Anchoring Fly-a-way Seeds, Cement-Coated
Nails and their Origin, and more . . . . 245--245
Anonymous Showing the Earth's Movement, New Cold
Method of Making Porcelain, and more . . 247--248
Anonymous Correspondence . . . . . . . . . . . . . 257--257
Anonymous Inventions New and Interesting . . . . . 262--262
Anonymous Disarmament and Pacifism, The Technique
of Road Repairing, and more . . . . . . 250--251
Robert G. Skerrett The Hudson River Caissons . . . . . . . 252--253
Albert A. Hopkins Behind the Exhibits . . . . . . . . . . 254--255
Charles W. Paddock The Science of Athletics . . . . . . . . 256--256
Anonymous High Pressure Steam . . . . . . . . . . 257--257
Anonymous Making Lenses in America . . . . . . . . 258--259
Thomas Ewing Dabney Fighting the Water Hyacinth . . . . . . 260--261
E. R. Mundorff Eliminating the Planked Railway Highway
Crossings . . . . . . . . . . . . . . . 265--265
Anonymous Seeds and Age, Damaged in Transit, and
more . . . . . . . . . . . . . . . . . . 265--267
Anonymous Man-Made Lightning . . . . . . . . . . . 268--268
H. F. Crafts A Fuel Comparison . . . . . . . . . . . 268--268
Anonymous Some New Mechanical Amusement Devices, A
Centrifugal Concrete Mixer . . . . . . . 269--269
J. F. Springer The Story of Cork . . . . . . . . . . . 270--271
S. R. Winters The U.S. Collection of Animal Parasites 271--271
Herbert D. Brown Saving Uncle Sam's Pennies . . . . . . . 272--272
Richard Gruen Blast Furnace Slag . . . . . . . . . . . 273--273
Albert A. Hopkins Our Latest Science --- Eugenics . . . . 273--273
William R. Andrews The Aviator's Tell-Tales . . . . . . . . 274--275
Jacques Boyer Mixing Liquids by Machine . . . . . . . 275--275
William T. Hornaday Zebras in New York . . . . . . . . . . . 276--277
Anonymous Testing the Purity of Quinine . . . . . 278--278
Anonymous Soil Acidity, The Diver from a
Biological Point of View . . . . . . . . 279--280
H. E. Howe The Service of the Chemist . . . . . . . 57--57
Henry Norris Russell The Heavens in November, 1921 . . . . . 58--58
Anonymous Inventions New and Interesting . . . . . 60--62
Anonymous Recently Patented Inventions . . . . . . 63--65
Anonymous Our Readers' Point of View . . . . . . . 66--66
Anonymous Mechanical Engineering Notes . . . . . . 68--68
Anonymous Miscellaneous Notes . . . . . . . . . . 69--69
Anonymous Electrical Notes . . . . . . . . . . . . 70--70
Anonymous Science Notes . . . . . . . . . . . . . 72--72
Anonymous Patent and Trade-mark Notes . . . . . . 73--73
Anonymous Civil Engineering Notes . . . . . . . . 74--75
Anonymous Notes and Queries . . . . . . . . . . . 77--79
Anonymous With the Editors . . . . . . . . . . . . 3--3
J. Malcolm Bird Tours and Detours . . . . . . . . . . . 6--8
Anonymous The ``Big Five'' . . . . . . . . . . . . 9--10
Alfred Gradenwitz The Chemistry of the Volatile . . . . . 10--10
J. Bernard Walker Naval Strength of United States, Great
Britain and Japan . . . . . . . . . . . 11--13
Anonymous The Cricket on the Wire . . . . . . . . 13--13
Carleton Simon From Opium to Hash Eesh . . . . . . . . 14--15
Anonymous A Photographic Innovation . . . . . . . 15--15
Edison What do you Know? . . . . . . . . . . . 16--17
Austin C. Lescarboura From Easel to Cover . . . . . . . . . . 18--19
Anonymous Editorials: Our Point of View . . . . . 20--21
Gustav Lindenthal Some Aspects of Bridge Architecture . . 22--24
J. Bernard Walker From Trireme to Dreadnought . . . . . . 25--27
Anonymous A New Engine Fuel, Business as Usual
While Moving . . . . . . . . . . . . . . 27--27
Harry A. Mount Can the Airplane Be Made Safe? . . . . . 28--29
Anonymous The Dissymmetry of the Body and Its
Striking Results, Prolonging the Life of
Insects by Variable Temperatures . . . . 29--29
Robert G. Skerrett Grouping Our Power Plants . . . . . . . 30--31
Anonymous The New Marine Salvage System . . . . . 32--33
A. R. Surface Rolling Pure Nickel . . . . . . . . . . 34--34
Anonymous Chemically Pure Nitrogen from the Air 34--34
Leon Augustus Hausman Fabrics Under the Microscope . . . . . . 35--37
J. S. Taylor Swimmer's Cramp --- its Causes and How
they May be Avoided . . . . . . . . . . 37--37
J. F. Springer Making the Flood Dam Itself . . . . . . 38--39
Harold Hollingshead Some Simple Pointers on How to Keep a
Car . . . . . . . . . . . . . . . . . . 39--39
Anonymous The Radio Link . . . . . . . . . . . . . 40--41
Anonymous Electrostatic Adhesion Phenomenon and
its Application to Radio . . . . . . . . 41--41
Geo. H. Dacy Why Not a Nation-Wide Building Code? . . 42--43
E. S. Van Brunt Lightening the Draftsman's Load . . . . 44--45
Anonymous Steel Direct from the Ore, A Gravity
Spray System for Orchard . . . . . . . . 44--44
William T. Hornaday A Study in Offspring Herds . . . . . . . 46--47
Howard S. Leach Linotype Slugs and Catalogues . . . . . 47--47
Anonymous A Farmer's Loading Station . . . . . . . 47--47
Anonymous The French Suggest a 200-Mile Gun . . . 48--49
Anonymous The Power of a Modern Gun and of
Thunder, Glycerine from Sugar . . . . . 49--49
Anonymous Tunnelling the Selkirks . . . . . . . . 50--51
Anonymous A Troublesome Problem in Stack-Wrecking,
The Defectoscope and Elevator Accidents 51--51
Charles N. Winter Recording Locomotive Operation, The True
Physiological Nature of Shock . . . . . 52--52
William Crowder The Truth About the Devil-Fish . . . . . 53--54
Anonymous Harvesting and Threshing in a Single
Operation, Harvesting Without Reaping 54--54
M. A. Henry The Miner's Dump-Heap Goes to Work . . . 55--56
Anonymous Marking the Detours . . . . . . . . . . 56--56
Charles P. Steinmetz When More Voltage Means More Distance 59--59
Anonymous Applied Chemistry Notes . . . . . . . . 76--76
H. E. Howe Service of the Chemist . . . . . . . . . 134--134
Henry Norris Russell The Heavens in December, 1921 . . . . . 136--136
Anonymous Inventions New and Interesting . . . . . 138--141
Anonymous Recently Patented Inventions . . . . . . 142--145
Anonymous Book Review: Book Reviews . . . . . . . 148--148
Anonymous Miscellaneous Notes . . . . . . . . . . 149--149
Anonymous Patent and Trade-mark Notes . . . . . . 150--150
Anonymous Electrical Notes . . . . . . . . . . . . 151--151
Anonymous Aeronautical Notes . . . . . . . . . . . 152--152
Anonymous Mechanical Engineering Notes . . . . . . 153--153
Anonymous Notes and Queries . . . . . . . . . . . 155--155
Anonymous Science Notes . . . . . . . . . . . . . 156--156
Anonymous Civil Engineering Notes . . . . . . . . 157--157
Anonymous Index for the Weekly
\booktitleScientific American Including
October 15, 1921 Issue . . . . . . . . . 159--160
Anonymous With the Editors . . . . . . . . . . . . 83--83
Henry Fairfield Osborn Prehistoric Sculpture . . . . . . . . . 86--87
W. R. Whitney The Rôle of Research . . . . . . . . . . 88--89
Anonymous America's First Model Airway . . . . . . 89--89
Hector C. Bywater Britain's New Battle Cruisers . . . . . 90--90
Anonymous Railways of the World . . . . . . . . . 91--91
Roy A. Giles Science in Safe-Breaking . . . . . . . . 92--93
William A. Borden The 4000-Pound Demolition Bomb . . . . . 94--95
Anonymous Leading Armies of the World . . . . . . 96--97
Hector C. Bywater High-Speed Fighting Ships . . . . . . . 97--97
Anonymous The New Army Sixteen-Inch Gun . . . . . 98--98
Anonymous Seats for 125,000 . . . . . . . . . . . 99--99
Anonymous Stainless Iron --- A New and Striking
Product . . . . . . . . . . . . . . . . 99--99
Anonymous Editorials: Our Point of View . . . . . 100--101
Anonymous Abraham Lincoln and the Repeating Rifle 102--103
Pierre Boucheron News and Music from the Air . . . . . . 104--105
Anonymous The Mechanics of Ordnance Figures . . . 105--105
Charles Frederick Carter Our Reforestation Activities . . . . . . 106--107
George H. Dacy Phosphorus, the Backbone of Life . . . . 108--108
George H. Dacy Why Weary Metal Fails under Light Loads 109--110
Ladislas d'Orcy The Revival of the Monoplane . . . . . . 111--112
Anonymous Difference Between Molds and Wood
Destroyers . . . . . . . . . . . . . . . 112--112
J. F. Springer The Mechanism of the Pipe Organ . . . . 113--116
Anonymous The Oil and Albumen Content of Seeds . . 116--116
H. W. Slauson Engineering in Truck Tire Building . . . 117--117
Anonymous Restoring Sight to Blind Animals . . . . 117--117
William A. Murrill The Banana and its Uses . . . . . . . . 118--119
J. Beyer Recent Studies of the Venomous Snakes 119--119
Anonymous Crossing San Francisco Bay by Bridge,
Fill and Tunnel . . . . . . . . . . . . 120--121
Anonymous Fire Tests of Building Columns, Freak
Boiler Explosion with a Man Inside . . . 121--121
William Crowder How Marine Worms Catch their Prey . . . 122--123
C. H. Claudy A Map's Other Name is Ananias . . . . . 124--125
Herbert Whitlock Rock Crystal Balls, Acetylene as Auto
Motor Fuel . . . . . . . . . . . . . . . 125--125
Felix Eugene Averill A Wilderness Industry . . . . . . . . . 126--127
Anonymous Keeping Growing Potatoes Cool . . . . . 127--127
Anonymous The Story of Sugar . . . . . . . . . . . 128--130
Anonymous The Self-Supporting College . . . . . . 130--130
Anonymous Moss Scrubber for Irrigation Projects,
How More Light Speeds up Vision, and
more . . . . . . . . . . . . . . . . . . 131--131
Robert G. Skerrett A Climax in Concrete Construction . . . 132--133
Anonymous The Camera Turned Sculptor, Static and
Gasoline Fires . . . . . . . . . . . . . 135--135
Marcus Benjamin Eliakim Hastings Moore, Zirconium, the
``Mystery Metal'' . . . . . . . . . . . 137--137
H. E. Howe Service of the Chemist . . . . . . . . . 28--28
Anonymous Inventions New and Interesting . . . . . 30--31
Anonymous Inventions: Recently Patented Inventions 32--32
Anonymous Books: New Books, Etc. . . . . . . . . . 36--36
Anonymous A Noble Presidential Precedent, How Fast
do Birds Fly?, Important Patent
Legislation . . . . . . . . . . . . . . 18--18
Anonymous Electricity, Science, Aeronautics . . . 19--19
William A. McGarry A Giant Junk Yard . . . . . . . . . . . 20--20
S. R. Winters Making Satisfactory Glass from American
Clays . . . . . . . . . . . . . . . . . 21--21
Frank B. Howe A Radio Link in Our Telephone System . . 21--21
Anonymous Hydraulic Power Under a Mile-High Head 22--23
Charles Frederick Carter Science Coming into its Own . . . . . . 24--24
E. G. Allen Weapons at Sea . . . . . . . . . . . . . 25--25
Austin C. Lescarboura A Chat with Madame Curie . . . . . . . . 25--25
Jerome Lachenbruch Lightning . . . . . . . . . . . . . . . 26--27
J. Boyer Counting Bacteria . . . . . . . . . . . 29--29
George Gaulois Daylight Projection of Opaque Subjects 29--29
Anonymous Correspondence . . . . . . . . . . . . . 45--45
Victor W. Page The Motor-Driven Commercial Vehicle . . 50--50
Anonymous Inventions: Recently Patented Inventions 51--52
Anonymous Books: New Books, Etc. . . . . . . . . . 56--56
Robert G. Skerrett Something New in Ferries . . . . . . . . 37--37
Anonymous The President's Great Opportunity,
Tremendous, The State's Duty to Its
Barge Canal . . . . . . . . . . . . . . 38--38
Anonymous Electricity, Science, Astronomy . . . . 39--39
R. Norris Shreve Putting Green Sand to Work . . . . . . . 40--40
C. D. Wagoner Our Latest Battleship, the ``Maryland'' 41--41
Harry A. Mount Something New in Salvaging Equipment . . 41--41
George H. Dacy How Much Air for the Tunnel? . . . . . . 42--42
Anonymous Drying Wood in the Orient, Helping the
Automobile Out of Sand with Chicken
Wire, and more . . . . . . . . . . . . . 43--43
Harry A. Mount The Oil that Makes the Wheels Go 'Round 44--44
Frank Parker Stockbridge The Summer Sneezer . . . . . . . . . . . 45--45
J. F. Springer Clusters and Nebulae . . . . . . . . . . 46--46
C. M. Lewis Man-Made Precious Stones . . . . . . . . 48--49
Anonymous Correspondence . . . . . . . . . . . . . 65--65
Anonymous Inventions New and Interesting . . . . . 69--69
Anonymous Aviation Fatalities, Sea Power in the
Pacific, A Better Merchant Marine
Outlook . . . . . . . . . . . . . . . . 58--58
Anonymous Aeronautics, Science, Industrial
Efficiency . . . . . . . . . . . . . . . 59--59
George H. Dacy Pulling the Mississippi's Teeth . . . . 60--60
Anonymous The Temple Driver --- a Powder Gun which
has no Recoil, Concussion or Flash . . . 61--61
Anonymous Molybdenum Steel in the Motor Car . . . 62--63
Raymond Francis Yates Succeeding in Architecture . . . . . . . 64--64
William Crowder What Makes the Glow-Worm Glow? . . . . . 65--65
Robert G. Skerrett Reporting the Life Story of Rails . . . 66--66
Anonymous From German Munition Boxes to Workmen's
Houses, What is the Aurora Borealis?,
and more . . . . . . . . . . . . . . . . 67--67
Anonymous Our Floating Hospital . . . . . . . . . 68--68
Anonymous Correspondence . . . . . . . . . . . . . 81--81
Anonymous Inventions New and Interesting . . . . . 86--86
Anonymous British Roadside Breakdowns . . . . . . 73--73
Anonymous On the Trail of News, Doing Instead of
Talking, The Paradox of Civilization . . 74--74
Anonymous Electricity, Science, Engineering . . . 75--75
Harry A. Mount What are Vitamines? . . . . . . . . . . 76--76
George H. Dacy Learning the Truth About Arches . . . . 77--77
William Melas A Machine that Clears Away Land, New
Varnish that Insulates . . . . . . . . . 77--77
M. A. Henry Home Building Simplified . . . . . . . . 78--79
R. A. F. George Whale Tomorrow's Airships . . . . . . . . . . 80--80
Henry Vendelmans Synthetic Agriculture . . . . . . . . . 81--81
Anonymous With Model Basin and Wind-Tunnel . . . . 82--83
J. F. Springer Transporting Electric Current . . . . . 84--84
Anonymous With the Engineers of Industry . . . . . 85--85
Anonymous Correspondence . . . . . . . . . . . . . 97--97
Henry Norris Russell The Heavens in August, 1921 . . . . . . 100--100
Anonymous Inventions New and Interesting . . . . . 103--103
Anonymous Inventions: Recently Patented Inventions 104--104
Robert G. Skerrett The Radio Compass and Navigation, The
Bombing Tests and our Naval Policy, and
more . . . . . . . . . . . . . . . . . . 89--91
Anonymous Depth-Bombing from the Air . . . . . . . 92--93
William Alphonse Murrill Dead Men's Fingers . . . . . . . . . . . 94--95
C. H. Messerly Where Oil Occurs . . . . . . . . . . . . 96--96
Frank Parker Stockbridge The Red Sea Dollar . . . . . . . . . . . 97--97
William A. McGarry The Last Word in Power Houses, The
World's Largest Watch, and more . . . . 98--99
Anonymous Towing the Wrecked Car, A One-Piece
Welded Structural Frame, and more . . . 101--101
H. L. Wright Preparing Bamboos for the Market,
Alcohol as Locomotive Fuel . . . . . . . 102--102
S. R. Winters Postage Stamps in the Making, Stars of
Composite Spectra . . . . . . . . . . . 102--102
Anonymous Sodium Hypochlorite, Comparative Value
of Timber Cut from Live and Dead Trees 108--108
Anonymous Inventions New and Interesting . . . . . 122--122
Anonymous The Hudson River Pontoon Bridge,
Inventing a Crime, and more . . . . . . 110--111
Charles Frederick Carter Railroading Under Roof . . . . . . . . . 112--112
M. Macartney Saving St. Paul's in London . . . . . . 113--113
George T. Holmes Clean Water for the Power Plant . . . . 113--113
Robert G. Skerrett Getting the Rest of the Oil . . . . . . 114--115
Robert G. Skerrett Starving in the Midst of Plenty . . . . 116--116
Anonymous Proposed Hudson River Pontoon Bridge . . 117--117
Anonymous The Captive Helicopter . . . . . . . . . 117--117
J. F. Springer Enemies of Timber Construction . . . . . 118--119
M. O. Goldsmith An Ancient Art in Modern Dress . . . . . 120--121
Anonymous Correspondence . . . . . . . . . . . . . 133--133
H. E. Howe The Service of the Chemist . . . . . . . 136--136
Victor W. Page The Motor-Driven Commercial Vehicle . . 138--138
Anonymous The Races in the United States . . . . . 125--127
Robert G. Skerrett Painting with Metal Spray . . . . . . . 128--128
Anonymous Self-Propelled Steel Barges for the
State Barge Canal, A Few Facts and a
Little Fancy . . . . . . . . . . . . . . 129--129
S. R. Winters Housework in the Laboratory . . . . . . 130--130
Anonymous Simplifying the Coupling of Trains,
Sucking the Cargo Out of a Ship . . . . 131--131
O. R. Geyer Winning Foreign Film Markets . . . . . . 132--132
Arthur H. J. Keane Soap Science . . . . . . . . . . . . . . 133--133
Albert A. Hopkins Doing away with the Ice Man . . . . . . 134--135
Anonymous Starrett Combination Squares Graduated
with Metric Measure Now Available,
Improved Universal Bevel Protractor
Added to Starrett Line . . . . . . . . . 137--137
Anonymous Cement for Leather Driving Belts . . . . 140--140
Anonymous Correspondence . . . . . . . . . . . . . 149--149
Anonymous Inventions New and Interesting . . . . . 154--154
Anonymous Deep-Level Rapid Transit, Armaments
Offset Reparations, and more . . . . . . 142--143
William McGarry Pennsylvania's Roads . . . . . . . . . . 144--144
C. W. Geiger The Caribou Power Plant . . . . . . . . 145--145
Wm. I. Wyman A Problem and its Attempted Solution . . 146--146
Arthur Lynch The Ubiquitous Radio . . . . . . . . . . 147--147
John Lathrop Twenty Miles a Day . . . . . . . . . . . 148--148
Samuel J. Record Japanese Veneer Paper . . . . . . . . . 149--149
George H. Dacy The Story of the Rail . . . . . . . . . 150--150
Anonymous Our Prehistoric Inhabitants, Old
Peruvian Surgery . . . . . . . . . . . . 151--151
Anonymous With the Engineers of Industry . . . . . 152--153
Anonymous Editorials: Our Point of View . . . . . 20--21
H. E. Howe The Service of the Chemist . . . . . . . 56--56
Henry Norris Russell The Heavens in January . . . . . . . . . 59--59
Anonymous Inventions New and Interesting . . . . . 61--64
Anonymous Our Readers' Point of View . . . . . . . 65--65
Anonymous Recently Patented Inventions . . . . . . 66--70
Anonymous Miscellaneous Notes . . . . . . . . . . 71--71
Anonymous Electrical Notes . . . . . . . . . . . . 72--72
Anonymous Book Reviews . . . . . . . . . . . . . . 73--73
Anonymous Science Notes . . . . . . . . . . . . . 74--74
Anonymous Mechanical Engineering Notes: Mechanical
Engineering . . . . . . . . . . . . . . 75--75
Anonymous Patent and Trade-mark Notes . . . . . . 76--76
Anonymous Notes and Queries . . . . . . . . . . . 77--77
Anonymous With the Editors . . . . . . . . . . . . 3--3
Robert G. Skerrett America's Domestic Food Supply . . . . . 6--7
Anonymous The Electric Field of the Atmosphere
During Storms, Gear-Shift Innovations 7--7
Austin C. Lescarboura The Radio Central . . . . . . . . . . . 8--9
S. G. Roberts The Hydraulic Laboratory . . . . . . . . 10--11
Anonymous Stamp Frauds and their Detection . . . . 12--13
J. F. Springer Comets that have Lost their Tails . . . 14--15
Anonymous A Catapult and Turntable for Airplanes 16--16
Anonymous Vehicular Tunnel Ventilation . . . . . . 17--18
Anonymous The Hydraulic Jump . . . . . . . . . . . 18--19
Anonymous The Legal Adviser in Foreign Trade . . . 19--19
Anonymous From Steamer to Sailing Ship . . . . . . 22--22
Anonymous Standard Specifications for Large
Incandescent Electric Lamps . . . . . . 22--22
Albert A. Hopkins With Eye-Piece and Camera . . . . . . . 23--24
Hector C. Bywater Naval Construction in Japan . . . . . . 25--26
Anonymous The Determination of Oxides of Nitrogen 26--26
M. Luckiesh Recent Advances in Lighting . . . . . . 27--27
Anonymous Government Railroad in Alaska Nearing
Completion . . . . . . . . . . . . . . . 28--29
Anonymous Track Laid on Cables while fill is being
Made . . . . . . . . . . . . . . . . . . 29--29
Albert A. Hopkins Noises for the Movies . . . . . . . . . 30--30
Anonymous Large Diesel Engines . . . . . . . . . . 30--31
Jacques Boyer Reading between the Lines . . . . . . . 32--32
Anonymous Bottling and Labeling Machine for Small
Scale Operations, Applying Electricity
to the Metal-Melting Pot, and more . . . 33--33
T. Hart Anderson Design Patents . . . . . . . . . . . . . 34--34
Anonymous The ``Quest,'' a Norwegian Sealing Ship
which has been Refitted for Sir Ernest
Shackleton's new Antarctic Expedition 35--35
Anonymous Recent Discovery in Greek Lands . . . . 36--37
Anonymous The Mount Everest Reconnaissance . . . . 37--37
Harry A. Mount A Garbage Crisis . . . . . . . . . . . . 38--39
Anonymous New Timing Disk reduces a Day's work
into a few Minutes, How Sensitive is
Dynamite? . . . . . . . . . . . . . . . 39--39
William J. Wilgus New York's Proposed Belt Railway . . . . 40--41
Anonymous Studying the Flight of Flies . . . . . . 41--41
George H. Dacy Lessening Lumber Losses . . . . . . . . 42--43
Anonymous Magnetic Testing of Wider Applicability 43--43
Frederic C. Carl The Latest in Steel Rails . . . . . . . 44--44
Anonymous Keeping Track of Surgical Operations,
Hot High-Nitrogen Gas in a Metal Mine 45--45
William A. McGarry The Noiseless Elevated . . . . . . . . . 46--47
Anonymous Lumber of Steel, The Grunewald
Automobile Race-Course . . . . . . . . . 47--48
E. J. Loring Bombing and Bombing Sights . . . . . . . 49--51
Anonymous How did the Ichthyosaurus Live? . . . . 52--52
Anonymous Intake, Compression, Power and Exhaust 53--54
Anonymous Trolley Snow Sweepers, Concrete Tower
for Dam Construction . . . . . . . . . . 55--55
Anonymous Why Not Long-Distance Stenography? . . . 57--57
Anonymous Combining Motion Pictures with Clockwork 57--57
Hereward Carrington The Mechanism of the Psychic . . . . . . 60--60
Anonymous Editorials: Our Point of View . . . . . 98--99
H. E. Howe The Service of the Chemist . . . . . . . 129--129
Victor W. Page The Motor-Driven Commercial Vehicle . . 131--131
Anonymous Inventions New and Interesting . . . . . 132--135
Henry Norris Russell The Heavens in February, 1922 . . . . . 136--136
Anonymous Our Readers' Point of View . . . . . . . 137--137
Anonymous Recently Patented Inventions . . . . . . 138--141
Anonymous Science Notes . . . . . . . . . . . . . 144--144
Anonymous Miscellaneous Notes . . . . . . . . . . 145--145
Anonymous Civil Engineering Notes . . . . . . . . 146--146
Anonymous Mechanical Engineering Notes . . . . . . 147--147
Anonymous Notes and Queries . . . . . . . . . . . 148--149
Anonymous Patent and Trade-mark Notes . . . . . . 150--150
Anonymous Electrical Notes . . . . . . . . . . . . 151--151
Anonymous With the Editors . . . . . . . . . . . . 83--83
Robert G. Skerrett America's Fuel Resources . . . . . . . . 86--87
Anonymous Bridging the Detroit River . . . . . . . 88--89
A. A. Hopkins The Latest African Anthropological Find 90--90
Ismar Ginsberg Artificial Cork . . . . . . . . . . . . 91--91
Anonymous Wireless Telephone Progress . . . . . . 91--91
John A. Harriss Untangling Our Traffic Tangles . . . . . 92--93
Anonymous American Telephone Practice from a
British Point of View . . . . . . . . . 93--93
William A. McGarry Overhauling the Human Mechanism . . . . 94--94
Anonymous A Ten-Year Naval Holiday . . . . . . . . 95--96
J. Malcolm Bird The Last Word in Illuminated Highways 97--97
Alfred Gradenwitz Where Human Speech is Put on the
Dissecting Table . . . . . . . . . . . . 100--100
Anonymous Greasing Electric Trolley Wires . . . . 100--100
Howard Mingos Airplane Racing and what it Means . . . 101--101
Anonymous New Process of Piloting Ships by Sound 101--101
James H. Collins How an Inventor Straightened Out a Labor
Tangle . . . . . . . . . . . . . . . . . 102--103
D. M. Strickland Corrosion Investigations . . . . . . . . 104--104
Eric A. Dime The ``Rain-Drop'' Auto . . . . . . . . . 105--105
George H. Dacy Potash, An Essential for Plant Growth 106--107
Anonymous A Seaside Vineyard . . . . . . . . . . . 107--107
George H. Dacy Better Use of Low-Grade Coal . . . . . . 108--108
Anonymous Germination of Light-Sensitive Seeds . . 108--109
Anonymous Container System in Operation on British
Railways . . . . . . . . . . . . . . . . 109--109
A. H. Scott Building Better Homes . . . . . . . . . 110--111
Anonymous Lining a Creek with Concrete, Garage the
Dwelling-Place While the House Goes Up 111--111
Leon Augustus Hausman Human Hair Under the Microscope . . . . 112--113
Fred Gilman Jopp A Second Pompeii . . . . . . . . . . . . 114--114
Anonymous Quantum Theory of Color Vision . . . . . 114--114
Anonymous Measuring in Millionths . . . . . . . . 115--115
Anonymous The Peking--Suiyuan Railway of China . . 116--117
Alfred P. Dachnowski A Question in National Resources . . . . 118--118
Anonymous Rapid Transit in the Telegraph Office, A
High-Speed Crankless Steam Engine . . . 119--119
Robert W. King The Voice with the Nation-Wide Audience 120--121
Anonymous The Utilization of Atomic Forces . . . . 121--121
D. H. Georgian How Jack Frost Stimulates Plant Growth 122--122
Anonymous Photographing Blood Stains, Magnetized
Scale Weights . . . . . . . . . . . . . 123--123
Frank B. Howe A New Use for Our Old Friend Hypo . . . 124--124
Harry A. Mount Sewage: The Price of Civilization . . . 125--126
Anonymous The Pneumatic Hub, Measuring Low Air
Velocities . . . . . . . . . . . . . . . 127--127
Anonymous The Bat Pest in Ceylon . . . . . . . . . 128--128
Anonymous Sand-Blasting Small Parts . . . . . . . 130--130
Anonymous Editorials: Our Point of View . . . . . 164--165
Ismar Ginsberg The Service of the Chemist . . . . . . . 201--202
Anonymous Inventions New and Interesting . . . . . 203--206
Henry Norris Russell The Heavens in March, 1922 . . . . . . . 207--207
Anonymous Recently Patented Inventions . . . . . . 208--210
Anonymous Miscellaneous Notes . . . . . . . . . . 211--211
Anonymous Science Notes . . . . . . . . . . . . . 212--212
Anonymous Civil Engineering Notes . . . . . . . . 213--213
Anonymous Radio Notes . . . . . . . . . . . . . . 214--214
Anonymous Mechanical Engineering Notes . . . . . . 215--215
Anonymous Patent and Trade-mark Notes . . . . . . 216--216
Anonymous Electrical Notes . . . . . . . . . . . . 217--217
Anonymous Notes and Queries . . . . . . . . . . . 218--218
Anonymous With the Editors . . . . . . . . . . . . 155--155
Sherman M. Fairchild Winged Surveyors . . . . . . . . . . . . 157--160
J. Malcolm Bird The 1922 Car . . . . . . . . . . . . . . 161--161
J. F. Springer Moving Niagara into Canada . . . . . . . 162--163
Austin C. Lescarboura Radio for Everybody . . . . . . . . . . 166--168
Robert G. Skerrett Research Settles the Problem of Tunnel
Ventilation . . . . . . . . . . . . . . 169--170
E. Bade Artificial Plants in the Making . . . . 171--171
Harry A. Mount The Lincoln Highway of the Telephone . . 172--173
Anonymous Measuring the Growth of Trees . . . . . 173--173
Charles d'Emery The Yacht of a Viking Queen, The Effect
of Exercise on Blood Constituents . . . 174--174
Anonymous A Recorder that Speaks, An X-Ray Outfit
in a Hand-Satchel . . . . . . . . . . . 175--175
Anonymous The Mount Everest Reconnaissance . . . . 176--176
James B. Kelly The Physical Basis of Heredity . . . . . 177--178
Alfred Gradenwitz Quantity Production of Relief Maps . . . 178--178
Anonymous The Successful Cotton Picker, The
Braille Typewriter for the Blind . . . . 179--179
Ralph Howard From Common Carp to Fanciest of Gold
Fish . . . . . . . . . . . . . . . . . . 180--180
S. R. Winters and
G. A. Orb Making Tea from Holly, Thistle Gardening
in San Francisco . . . . . . . . . . . . 181--181
P. J. Risdon Roentgen-Ray Photography . . . . . . . . 182--182
Anonymous Salvaging Fuel from Boiler-Furnace
Refuse, Electrical Operation of Suction
Dredger, and more . . . . . . . . . . . 183--183
R. E. Plimpton Freehand Drawing in the Industrial World 184--184
J. Bernard Walker Scrapping the Battleships . . . . . . . 185--188
Charles Alma Byers Spectacles for the Motion-Picture Camera 189--189
Anonymous The Organic Chemistry of Soils . . . . . 189--189
Anonymous Revising Street Intersections With the
Aid of a Model, The Freight-Car Liner,
and more . . . . . . . . . . . . . . . . 190--190
Anonymous More Comfort with Less Work . . . . . . 191--192
Anonymous Failures of Bronze and Iron Bell
Clappers, How the Color of the Ground
Affects Plant Growth . . . . . . . . . . 192--192
Anonymous To Put a Diamond to the Test, Musical
Strings and where they Come from . . . . 193--193
F. Rowlinson A New Caterpillar Development . . . . . 194--195
Anonymous Caterpillar Ordnance . . . . . . . . . . 195--195
William B. Stout Duraluminum . . . . . . . . . . . . . . 196--196
August Kuhlmann Failure of St. Mary's Bascule Bridge . . 197--198
Paul J. Mallmann The Oppau Disaster: Facts and
Conjectures as to its Cause . . . . . . 198--198
Anonymous Learning While Earning . . . . . . . . . 199--199
Anonymous Atomic Structure . . . . . . . . . . . . 199--199
Albert A. Hopkins The Human Atmosphere . . . . . . . . . . 200--200
Anonymous The Vacuum-Bottle Milk-Car, The
Cornerless Rock-Crusher . . . . . . . . 202--202
Anonymous Editorials: Our Point of View . . . . . 238--239
Anonymous Inventions New and Interesting . . . . . 268--272
Victor W. Page The Motor-Driven Commercial Vehicle . . 273--273
Ismar Ginsberg and
Chemical Engineer Service of the Chemist . . . . . . . . . 275--275
Henry Norris Russell The Heavens in April, 1922 . . . . . . . 276--276
Anonymous Our Readers' Point of View . . . . . . . 277--277
Anonymous Recently Patented Inventions . . . . . . 278--281
Anonymous Science Notes . . . . . . . . . . . . . 282--282
Anonymous Miscellaneous Notes . . . . . . . . . . 283--283
Anonymous Civil Engineering Notes . . . . . . . . 284--284
Anonymous Mechanical Engineering Notes . . . . . . 285--285
Anonymous Patent and Trade-mark Notes . . . . . . 286--286
Anonymous Electrical Notes . . . . . . . . . . . . 287--287
Anonymous Wild Life Notes . . . . . . . . . . . . 288--288
Anonymous Radio Notes . . . . . . . . . . . . . . 289--289
Anonymous Governmental Activities . . . . . . . . 290--290
Anonymous Notes and Queries . . . . . . . . . . . 291--291
Anonymous With the Editors . . . . . . . . . . . . 223--223
Anonymous How America's Male and Female Workers
Earn their Daily Bread . . . . . . . . . 225--225
R. P. Crawford World Crops for America . . . . . . . . 226--227
Anonymous Thunderstorm-Breeding Spots and
Engineering Design . . . . . . . . . . . 227--227
The Staff Applying the Lessons of Industry to the
Theater . . . . . . . . . . . . . . . . 228--229
The Staff Articulated Trains . . . . . . . . . . . 230--231
Anonymous The Toronto Meeting, Air for the Miners 231--231
Pierre Boucheron At the Sending End of Radio . . . . . . 232--233
Hector C. Bywater The First, and Last, 18-Inch Naval Gun 234--234
Ladislas d'Orcy Soaring Birdmen . . . . . . . . . . . . 235--237
Anonymous Biological Effects of the Tides . . . . 237--237
Anonymous Making Two Dirigible Sheds into One,
Four-Footed Transatlantic Passengers . . 240--240
Andrew Goobeck A Pump-Power Railroad . . . . . . . . . 241--241
Raymond Francis Yates Will the Direct Current Era Return? . . 242--242
Albert A. Hopkins The Tomb of an Egyptian Queen . . . . . 243--244
H. C. Hardy Burning Up the Corn . . . . . . . . . . 244--244
Anonymous Magnetism in Human Beings, A Mechanical
Sun and Moon . . . . . . . . . . . . . . 245--245
Robert G. Skerrett Curbing the Colorado . . . . . . . . . . 246--247
Anonymous Comfortable Houses Made of Straw . . . . 247--247
William Butterfield The Earliest Inhabitant . . . . . . . . 248--248
Anonymous The Latest in Speed Boats, The All-Steel
Grade Crossing, and more . . . . . . . . 249--249
C. H. Claudy Why the Mail Plane? . . . . . . . . . . 250--251
Anonymous Populations and War . . . . . . . . . . 251--251
Anonymous Pouring Concrete Under Water . . . . . . 252--252
Anonymous Capacity Effects in Inductance Coils . . 252--252
S. R. Winters What and Why is a Contour? . . . . . . . 253--253
C. D. Mell The Peer of Decorative Hardwoods . . . . 254--254
Anonymous Petroleum Wastes and Savings . . . . . . 254--254
Anonymous Packing Perishable Foods in Inert Gas,
Washing London Fog Out of the Atmosphere
of a Motion Picture Studio . . . . . . . 255--255
Robert G. Skerrett A Ship Without a Bottom . . . . . . . . 256--257
Anonymous Lost in Transit . . . . . . . . . . . . 257--257
Charles Alma Byers Tons of Silver from Waste Hypo . . . . . 258--258
Anonymous A Drill for the Tree-Dentist, Auto-Bus
Stability, and more . . . . . . . . . . 259--259
Anonymous Exactitude in Propeller Manufacture . . 260--261
J. Malcolm Bird A Steam Car that is Different . . . . . 262--263
Anonymous Evaporating Apparatus that Dispenses
with Fuel, Automatic Traffic Regulation 263--263
C. H. Claudy Scientific Road Legislation . . . . . . 264--264
Harry A. Mount The Raw Materials for Artificial
Daylight . . . . . . . . . . . . . . . . 265--266
Anonymous The Effect of Internal Secretions: Why
We Are What We Are . . . . . . . . . . . 266--266
Anonymous U.S.S. ``Wright'' --- Our First Balloon
--- and Airplane Carrier . . . . . . . . 267--267
Anonymous Sir Ernest Shackleton, German Scientific
Books, and more . . . . . . . . . . . . 274--274
Anonymous Editorials: Our Point of View . . . . . 306--307
Anonymous Inventions New and Interesting . . . . . 339--342
Ismar Ginsberg The Service of the Chemist . . . . . . . 343--343
Anonymous Our Readers' Point of View . . . . . . . 345--345
Henry Norris Russell The Heavens in May, 1922 . . . . . . . . 346--346
Anonymous Recently Patented Inventions . . . . . . 347--351
Anonymous Science Notes . . . . . . . . . . . . . 352--352
Anonymous Miscellaneous Notes . . . . . . . . . . 353--353
Anonymous Civil Engineering Notes . . . . . . . . 354--354
Anonymous Mechanical Engineering Notes . . . . . . 355--355
Anonymous Patent and Trade-mark Notes . . . . . . 356--356
Anonymous Electrical Notes . . . . . . . . . . . . 357--357
Anonymous Radio Notes . . . . . . . . . . . . . . 358--358
Anonymous Aeronautical Notes . . . . . . . . . . . 359--359
Anonymous Book Review: Book Reviews . . . . . . . 360--361
Anonymous With the Editors . . . . . . . . . . . . 295--295
Anonymous Where the Money Goes . . . . . . . . . . 297--297
George H. Dacy Taking the Riddles Out of Radio . . . . 298--299
Robert G. Skerrett Our Wasteful Industries . . . . . . . . 300--301
Ralph Howard Cutting and Fitting Beneath the Waves 302--303
Anonymous Piping Made of Paper as a Manufactured
Article . . . . . . . . . . . . . . . . 303--303
Anonymous Telephoning to Sea . . . . . . . . . . . 304--305
S. G. Roberts The Industrial Production of Helium . . 308--309
R. P. Crawford Modern Miracles of Fishes . . . . . . . 310--311
Anonymous Tetralin, the New Motor Fuel . . . . . . 311--311
Anonymous Nelson's ``Victory'' Makes Her Last
Voyage . . . . . . . . . . . . . . . . . 312--312
James H. Collins Sugars of Great Price . . . . . . . . . 313--313
C. H. Claudy Automatic Train Control Made Obligatory 314--314
S. R. Winters Flood and Drought Control on the North
Platte . . . . . . . . . . . . . . . . . 315--315
Anonymous From Railroad to Highway . . . . . . . . 316--317
Anonymous The Motion of the Perihelion of Mercury,
Where Road Wrecks Happen . . . . . . . . 317--317
Albert A. Hopkins The New World . . . . . . . . . . . . . 318--318
Anonymous The Submarine Artist . . . . . . . . . . 319--319
Anonymous Moth-Proof Wool . . . . . . . . . . . . 319--319
Anonymous Transmitting Power in Fluid Waves . . . 320--320
Anonymous America's Debt to the Howe Truss Timber
Railway Bridge, Facts Concerning
Molybdenum . . . . . . . . . . . . . . . 321--321
Charles Frederick Carter Stoking the Employee . . . . . . . . . . 322--322
J. Malcolm Bird Our Subconscious Selves . . . . . . . . 323--324
Anonymous Cucumber-Flavored Water . . . . . . . . 324--324
Anonymous Cars that Carry their Own Turntable, the
Cementing Qualities of the Calcium
Aluminates, and more . . . . . . . . . . 325--325
Harry A. Mount Peace-Time Jobs for Poison Gas . . . . . 326--327
Anonymous A Warning Concerning the Peace-Time Use
of Army Gas Masks . . . . . . . . . . . 327--327
Anonymous New York City's Staten Island Docks . . 328--329
Anonymous Waterproofing Fabrics by the Aid of
Electricity . . . . . . . . . . . . . . 329--329
Hereward Carrington The Ductless Glands . . . . . . . . . . 330--330
Anonymous A Menace to Fish Life . . . . . . . . . 330--330
Anonymous The Machine of all Work, Safer Handling
of Acid . . . . . . . . . . . . . . . . 331--331
Anonymous Freezing Fish for Future Food . . . . . 332--332
Anonymous Copper May Harm Illusive Vitamine . . . 332--332
Anonymous A Match That Lights Under Water,
Portable Runway for Climbing the Curb,
and more . . . . . . . . . . . . . . . . 333--333
Anonymous ``The Friendly Arctic'' . . . . . . . . 334--335
Anonymous Heat and Ventilation for the Cow Stable,
Emergency Houses of Clay and Straw . . . 335--335
C. E. Kenneth Mees Darts of Light . . . . . . . . . . . . . 336--336
Anonymous Speed as a Factor of Horsepower, Modern
Stone Age Men, and more . . . . . . . . 337--337
Anonymous A Fifty-Knot Torpedo, Internal Diagonal
Armor for Warships . . . . . . . . . . . 338--338
Anonymous Jobs for the Tractor Outside the Daily
Routine, How the Stability of a Ship is
Determined, and more . . . . . . . . . . 344--344
Anonymous Editorials: Our Point of View . . . . . 378--379
Henry Norris Russell The Heavens in June, 1922 . . . . . . . 409--409
Anonymous Inventions New and Interesting . . . . . 411--414
Ismar Ginsberg The Service of the Chemist . . . . . . . 415--415
Anonymous Our Readers' Point of View . . . . . . . 416--416
Anonymous Recently Patented Inventions . . . . . . 417--420
Anonymous Miscellaneous Notes . . . . . . . . . . 421--422
Anonymous Electrical Notes . . . . . . . . . . . . 423--425
Anonymous Mechanical Engineering Notes . . . . . . 425--426
Anonymous Patent and Trade-mark Notes . . . . . . 426--430
Anonymous Radio Notes . . . . . . . . . . . . . . 430--430
Anonymous Civil Engineering Notes . . . . . . . . 431--432
Anonymous Science Notes . . . . . . . . . . . . . 432--438
Anonymous With the Editors . . . . . . . . . . . . 367--367
Anonymous The World's Wages --- a Statistical
Anomaly . . . . . . . . . . . . . . . . 369--369
Anonymous The North Atlantic Ice Patrol . . . . . 370--371
S. Dushman Beyond the Microscope . . . . . . . . . 372--373
Anonymous New Studies of Caries in Teeth . . . . . 373--373
Anonymous By Rail and By Water . . . . . . . . . . 374--374
George H. Dacy Uncle Sam and Radio . . . . . . . . . . 375--375
Austin C. Lescarboura The Gentle Art of Radio Broadcasting . . 376--377
Anonymous Railway Motor Car of Special Design . . 380--380
H. D. Benton Forecasting Earthquakes . . . . . . . . 381--382
Anonymous Fast Cotton Dyeing . . . . . . . . . . . 382--382
Charles Alma Byers Utilizing all but the Squeal . . . . . . 383--384
S. R. Winters Every Lamp Socket a Radio-Phone . . . . 384--384
John T. Bramhall Stop! Look! Listen! . . . . . . . . . . 385--386
Anonymous Two-Cent Gasoline --- A Pitfall for the
Unwary Investor . . . . . . . . . . . . 386--386
Anonymous A Relief Map that Fills Two Acres,
Moving a House of Glass, and more . . . 387--387
Roy A. Giles Planning Big Crimes . . . . . . . . . . 388--388
Anonymous Outdoor Auditoriums of Novel Design . . 389--389
Anonymous Diesel Engine Wins its Way . . . . . . . 390--390
Anonymous Windproof Plate Glass Windows . . . . . 391--391
Hector C. Bywater Reducing Dreadnoughts to Scrap Metal . . 392--393
Anonymous Salvarsan and Neosalvarsan . . . . . . . 393--393
L. J. Jellison Building a Road with a Dredge . . . . . 394--394
Anonymous The Light of the Night Sky . . . . . . . 394--394
William Crowder Why Did the Hermit-Crab Become a Hermit? 395--396
C. M. Lewis Ashes and Sawdust the Basis of a New
Industry . . . . . . . . . . . . . . . . 396--397
Francis P. Mann Speeding up Radio . . . . . . . . . . . 397--397
Charles R. Ferrall Lumber from Sugar-Cane Waste . . . . . . 398--398
Anonymous The Comodoro Rivadavia Oil Fields . . . 398--398
F. A. Lucas and
A. A. Hopkins Evolution in Museum Technique . . . . . 399--399
Anonymous The Formation of Spiral Nebulae . . . . 399--399
Anonymous The Problem of Mooring Airships . . . . 400--400
Anonymous The Relation Between Body Size and Organ
Size of Plants . . . . . . . . . . . . . 401--401
Alfred Gradenwitz Plants as Inventors . . . . . . . . . . 402--403
Anonymous Gravitational Absorption . . . . . . . . 403--403
Anonymous The Great Wall of China . . . . . . . . 404--405
Anonymous Vitamine Food Tablets . . . . . . . . . 405--405
Hereward Carrington When Tables Tip . . . . . . . . . . . . 406--406
S. R. Winters Stretching the Five-Foot Shelf . . . . . 407--407
F. Frank The Treatment of Fuels by Direct Flame 408--408
Dean Ellery The Inside of the Question . . . . . . . 410--410
Anonymous The Age of the Earth . . . . . . . . . . 410--410
Anonymous Editorials: Our Point of View . . . . . 14--15
Anonymous Inventions New and Interesting . . . . . 45--48
Ismar Ginsberg The Service of the Chemist . . . . . . . 49--49
Henry Norris Russell The Heavens in July, 1922 . . . . . . . 50--50
Victor W. Page The Motor-Driven Commercial Vehicle . . 51--51
Anonymous Our Readers' Point of View . . . . . . . 52--52
Anonymous Recently Patented Inventions . . . . . . 53--56
Anonymous Book Review: Book Reviews . . . . . . . 57--57
Anonymous Science Notes . . . . . . . . . . . . . 58--58
Anonymous Civil Engineering Notes . . . . . . . . 59--59
Anonymous Mechanical Engineering Notes . . . . . . 60--60
Anonymous Electrical Notes . . . . . . . . . . . . 61--61
Anonymous Miscellaneous Notes . . . . . . . . . . 62--62
Anonymous Aeronautical Notes . . . . . . . . . . . 65--65
Anonymous Notes and Queries . . . . . . . . . . . 66--67
Anonymous Radio Notes: The Radio Guide . . . . . . 69--69
Anonymous With the Editors . . . . . . . . . . . . 3--3
Anonymous Unusual features of the world's largest
ship, the ``Majestic'' . . . . . . . . . 5--5
Walter Franklin Prince The Psychic Detective . . . . . . . . . 6--7
Austin C. Lescarboura The Business of Broadcasting . . . . . . 8--9
Anonymous ``Majestic'' --- The Latest and Largest
of Ships . . . . . . . . . . . . . . . . 10--11
Anonymous Determining the Penetration of Wood
Preservatives . . . . . . . . . . . . . 11--11
S. G. Roberts Pullman and Caboose Radio . . . . . . . 12--13
Anonymous Department of Commerce Radio Periodical 13--13
Anonymous Gyro-Stabilizer as Cure for Seasickness,
The Hottest Place in the World, and more 16--17
M. M. O'Shaughnessy San Francisco's Water Supply Project . . 18--19
Anonymous The Significance of Calcium for Higher
Green Plants . . . . . . . . . . . . . . 19--19
George H. Dacy Radio Rules in the Making . . . . . . . 20--20
Anonymous The Statistics of Climate . . . . . . . 21--21
Leonard Matters An Antediluvian Monster . . . . . . . . 21--21
Robert G. Skerrett When the Hand on the Throttle Fails . . 22--22
Anonymous Wireless from Trains in Germany,
Something New in Movie Scenery, and more 23--23
H. A. MacMullan Fulfilling the Treaty . . . . . . . . . 24--24
Anonymous What The Treaty Left Us . . . . . . . . 24--25
Anonymous Tamed Lightning . . . . . . . . . . . . 26--26
Anonymous Belgium's Giant Radio Station, Reactions
Obtained by Ultra-Violet Light . . . . . 27--27
William A. McGarry The Ice Cream Factory . . . . . . . . . 28--29
Anonymous Dr. Nimführ's Soaring Airplane, Sandy Ice
Cream . . . . . . . . . . . . . . . . . 29--29
Alfred Gradenwitz Investigating unknown Forces . . . . . . 30--30
George H. Dacy Earthquake Detection Near The White
House, Some Physical Characteristics of
the Ear, and more . . . . . . . . . . . 31--31
P. J. Risdon When Steel Beams Stretch . . . . . . . . 32--32
Anonymous Catching the Cinders, Measuring the Heat
from the Stars . . . . . . . . . . . . . 33--33
Anonymous The Counterfeit Presentment . . . . . . 34--34
Anonymous The Airman's Weather-Finder, The
Coloring Matter of Red Roses . . . . . . 35--35
Anonymous The Terminal Elevator for State Barge
Canal . . . . . . . . . . . . . . . . . 36--37
Anonymous Nutrient Requirements of Growing Chicks 37--37
Anonymous Stopping the Leaks . . . . . . . . . . . 38--38
Anonymous The Physiology of Grapefruit Ripening
and Storage, A Clock that runs without
Winding, and more . . . . . . . . . . . 38--39
C. A. Oldroyd How Airship Accidents Lead to Airship
Progress . . . . . . . . . . . . . . . . 40--41
Anonymous Conductivity and Permeability in Living
Matter, Direct Prints without a Camera 41--41
Anonymous Wild Birds and Their Music . . . . . . . 42--42
Anonymous Proteins Differ in Their Nutritive Value
as Food . . . . . . . . . . . . . . . . 42--42
Anonymous The Naturalist's Corner . . . . . . . . 63--64
Anonymous Chemistry Notes . . . . . . . . . . . . 64--64
Anonymous Editorials: Our Point of View . . . . . 86--87
Anonymous Inventions New and Interesting . . . . . 117--120
Anonymous Our Readers' Point of View . . . . . . . 121--122
Ismar Ginsberg Service of the Chemist . . . . . . . . . 123--123
Henry Norris Russell The Heavens in August, 1922 . . . . . . 124--124
Anonymous Recently Patented Inventions . . . . . . 125--128
Anonymous Science Notes . . . . . . . . . . . . . 132--132
Anonymous Mechanical Engineering Notes . . . . . . 133--133
Anonymous Civil Engineering Notes . . . . . . . . 134--134
Anonymous Electrical Notes . . . . . . . . . . . . 135--135
Anonymous Radio Notes . . . . . . . . . . . . . . 138--139
Anonymous Miscellaneous Notes . . . . . . . . . . 141--141
Anonymous With the Editors . . . . . . . . . . . . 75--75
Anonymous Where the Oil Goes . . . . . . . . . . . 77--77
Guy Elliot Mitchell Our Strenuous Geological Survey --- I 78--79
Anonymous New Literature for the Tourist, The
Colloidal Theory of Rust . . . . . . . . 79--79
Herbert Hoover Policing the Ether . . . . . . . . . . . 80--80
Anonymous The Moss Rose . . . . . . . . . . . . . 80--80
Robert G. Skerrett Fire at Sea . . . . . . . . . . . . . . 81--82
Anonymous New Class of Dyes Permits Dyeing of Two
Colors Simultaneously, New Bearing Metal
of Unusual Properties . . . . . . . . . 82--82
John J. Pershing Our National Military Policy . . . . . . 83--83
Anonymous The Caribou Hydroelectric Plant . . . . 84--84
Anonymous Dreams of the Blind . . . . . . . . . . 84--84
George O. Squier The Unification of Communication
Engineering . . . . . . . . . . . . . . 85--85
Anonymous The World's Longest Bridge . . . . . . . 88--89
Anonymous Inside the Atom, Removing and Installing
Large Turntables, and more . . . . . . . 89--89
C. de F. Chandler Submarine Telegraph Cables . . . . . . . 90--91
Anonymous Relativity in the Films . . . . . . . . 92--92
Anonymous A New Outdoor Wind Tunnel, An Electric
Press for Scrap Metal . . . . . . . . . 93--93
Samuel W. Allender A New Era in Transportation . . . . . . 94--95
Anonymous Corrosion of Chrome Steels, From Iron
Ore to Automobile in Ore Plant, and more 95--95
Alfred Gradenwitz Self-Steering Vessels . . . . . . . . . 96--96
Anonymous Permeability . . . . . . . . . . . . . . 96--96
Anonymous The Rolling Dump that Uses No Power, A
New Job for the Jitney . . . . . . . . . 97--97
Edward C. Crossman The Development of Accurate Ammunition 98--99
W. R. Whitney Science --- A World Partnership . . . . 100--100
Anonymous Ore Deposits Revealed by Plants . . . . 100--100
C. W. Geiger The Eight-Wheel Bus, Unloading with the
``Tilting Truck'' . . . . . . . . . . . 101--101
S. G. Roberts After Ashokan --- What? . . . . . . . . 102--103
Anonymous Novel Uses for Ultra-Violet Light . . . 103--103
Charles W. Geiger The Superlative in Power Lines . . . . . 104--104
S. R. Winters New Method of Fusing Glass, Measuring 65
to 85,000 Meter Wave Lengths . . . . . . 105--105
Harry A. Mount Garbage in Working Clothes . . . . . . . 106--107
Anonymous The Nature of Soil Fertility . . . . . . 107--107
J. Bernard Walker Curbing the Mississippi . . . . . . . . 108--110
Anonymous Conquering the Dome of the World . . . . 110--110
Anonymous Sand Fence of Old Cross-Ties, Germany's
Forthcoming Skyscrapers, and more . . . 111--111
Anonymous Psychology as a Business . . . . . . . . 112--113
P. J. Risdon Fighting a Mud Run . . . . . . . . . . . 113--113
Anonymous Stonehenge --- The Enigma of Salisbury
Plain . . . . . . . . . . . . . . . . . 114--115
James Black Do Tables Tip? . . . . . . . . . . . . . 116--116
Anonymous The Bounce-Power Bicycle, Finding
Practical Work for Low- Grade Ores, and
more . . . . . . . . . . . . . . . . . . 122--122
Anonymous The Radio Patents Situation . . . . . . 136--137
Anonymous Chemistry Notes . . . . . . . . . . . . 140--140
Anonymous Editorials: Our Point of View . . . . . 158--159
Anonymous Inventions New and Interesting . . . . . 189--192
Ismar Ginsberg The Service of the Chemist . . . . . . . 193--193
Henry Norris Russell The Heavens in September, 1922 . . . . . 194--194
Anonymous Recently Patented Inventions . . . . . . 195--198
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 199--199
Anonymous Science Notes . . . . . . . . . . . . . 200--200
Anonymous Civil Engineering Notes . . . . . . . . 201--201
Anonymous Patent and Trade-mark Notes . . . . . . 202--202
Anonymous Mechanical Engineering Notes . . . . . . 203--203
Anonymous Radio Notes . . . . . . . . . . . . . . 206--206
Anonymous Notes and Queries . . . . . . . . . . . 208--208
Anonymous Miscellaneous Notes . . . . . . . . . . 209--209
Anonymous Aeronautical Notes . . . . . . . . . . . 210--211
Anonymous Electrical Notes . . . . . . . . . . . . 212--212
Anonymous With the Editors . . . . . . . . . . . . 147--147
Anonymous Across America in Eight Hours . . . . . 149--149
Frank M. Leavitt Skilled Hands, or Automatic Machinery? 150--151
William H. Waggaman Dollars from Debris . . . . . . . . . . 152--153
P. J. Risdon The St. Gothard Electrification . . . . 154--155
Anonymous A British Device for Locking Open
Water-Tight Doors, Superheated Steam
Causes Failure of Cast Iron . . . . . . 155--155
Littell McClung The Seventy-Five Mile City . . . . . . . 156--157
Anonymous Armstrong's Super-Regenerative Receiver,
A Helicopter that Flies --- The Berliner
Machine . . . . . . . . . . . . . . . . 160--160
Anonymous A Pump that Converts any Automobile into
a Fire Engine, Adapting the
Double-Barrel Idea to Naval Gunnery . . 161--161
James Black Ectoplasm and Ectoplasm Fakers . . . . . 162--162
Anonymous The Limit of Size for American
Schooners, The Gasoline Rail Coach . . . 163--163
Albert D. Lasker The Ship Subsidy Bill . . . . . . . . . 164--164
Guy Elliot Mitchell Our Strenuous Geological Survey --- II 165--166
Anonymous Industrial Management, Mercury
Poisoning, and more . . . . . . . . . . 166--166
George H. Dacy A Huge Coast-Defense Range-Finder,
Taking the Error Out of Airplane Wings 167--167
Anonymous Liglits as Aid to Aerial Navigation . . 168--168
John Edwin Hogg Taking Aeronautical Photographs from the
Ground . . . . . . . . . . . . . . . . . 169--169
William Crowder Down Through the Ages . . . . . . . . . 170--171
Anonymous Transparent Rubber . . . . . . . . . . . 171--171
Charles W. Geiger California's Test Highway . . . . . . . 172--172
Anonymous Ships Within Ships: A New System of
Barge Transport . . . . . . . . . . . . 173--173
S. G. Roberts An Automatic Hand on the Throttle . . . 174--175
Anonymous Concrete-and-Steel Stadium Construction
in France, The Window-Cleaning Carriage 175--175
Delbert E. Davenport Castles of Plaster and Steel . . . . . . 176--177
Anonymous Explosion Chambers as Defense Against
Torpedoes . . . . . . . . . . . . . . . 177--177
L. Staekell The Sea as a Safe Deposit Vault . . . . 178--179
Anonymous Physical Energy and Biology, A l00-Car
Train on the Horseshoe Curve . . . . . . 179--179
P. J. Risdon The Sydney Harbor Bridge . . . . . . . . 180--181
Wyman Smith The Missing Link in Seaboard Sanitation 182--182
Anonymous Legendary Islands of the Atlantic . . . 183--183
Ivan C. Waterbury Electrically Harnessing the Winds . . . 184--185
Anonymous Solar Cooking with the Aid of Oil . . . 185--185
Robert G. Skerrett Eliminating Three Miles of Grade
Crossings . . . . . . . . . . . . . . . 186--187
Anonymous Mount Everest: The Reconnaissance of
1921 . . . . . . . . . . . . . . . . . . 187--187
E. Bade Crystals that Live, Safeguarding Live
Fish in Transit . . . . . . . . . . . . 188--188
Anonymous Chemistry Notes . . . . . . . . . . . . 204--204
Anonymous The Naturalist's Corner . . . . . . . . 205--205
Anonymous Government Activities . . . . . . . . . 207--207
Anonymous Inventions New and Interesting . . . . . 261--264
Ismar Ginsberg The Service of the Chemist . . . . . . . 265--266
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 267--267
Henry Norris Russell The Heavens in October, 1922 . . . . . . 268--268
Anonymous Recently Patented Inventions . . . . . . 269--269
Anonymous Electrical Notes . . . . . . . . . . . . 274--274
Anonymous Miscellaneous Notes . . . . . . . . . . 275--276
Anonymous Mechanical Engineering Notes . . . . . . 277--277
Anonymous Civil Engineering Notes . . . . . . . . 278--278
Anonymous Science Notes . . . . . . . . . . . . . 279--279
Anonymous Radio Notes . . . . . . . . . . . . . . 280--280
Anonymous Notes and Queries . . . . . . . . . . . 281--282
Anonymous With the Editors . . . . . . . . . . . . 219--219
Anonymous Where Necessity Was the Mother of
Invention . . . . . . . . . . . . . . . 221--221
Edward H. Smith Safes and Safe-Breakers --- I . . . . . 222--223
James Black The Spirit-Photograph Fraud . . . . . . 224--225
Anonymous Building a Bridge Within a Bridge . . . 226--228
Anonymous Colloidal Metals That Cure Human Ills,
Ammonia Table . . . . . . . . . . . . . 228--228
William H. Easton Railroad Electrification in Chile . . . 229--229
Anonymous Editorials: Our Point of View . . . . . 230--231
Anonymous Bell and His Telephone . . . . . . . . . 232--232
Anonymous Hypnosis and Surgery . . . . . . . . . . 232--232
Anonymous Taking the Roughness Out of Our Roads 233--233
Robert G. Skerrett The ``Lusitania'' and the Submarine
Salvor . . . . . . . . . . . . . . . . . 234--235
S. G. Roberts New Orleans' Big Port Improvement . . . 236--236
Hector C. Bywater The Parsons Steam Turbine . . . . . . . 237--239
Anonymous Iron and Steel in Brazil . . . . . . . . 239--239
W. van B. Roberts What Is Cold Light? . . . . . . . . . . 240--240
Anonymous New Tasks for the Weatherman . . . . . . 240--240
Anonymous A Candidate for the British--American
Cup Contest . . . . . . . . . . . . . . 241--241
Charles W. Burrows The Electro-Magnet at the Throttle . . . 242--242
Anonymous The Automatic Collision-Dodger, A
Successful Marl Pump, and more . . . . . 243--243
Guy Elliot Mitchell Our Strenuous Geological Survey --- III 244--245
Anonymous Sewer Pipe Investigation . . . . . . . . 245--245
Anonymous The Golden Age of Peru . . . . . . . . . 246--246
Anonymous Cannon-Ball Tests of Concrete, The Age
of Insects, and more . . . . . . . . . . 247--247
Arthur La Motte The Thunderbolts of Peace . . . . . . . 248--249
C. C. Vogt Chemistry and Preventive Dentistry . . . 250--250
Ismar Ginsberg Colloids and Your Health . . . . . . . . 250--250
Anonymous Harvesting Sugar Cane by Machine, Making
the Use of Gas in the Home, Safe . . . . 251--251
Anonymous The Twenty-Hour Week . . . . . . . . . . 252--253
William H. Cole The Green Japanese Beetle . . . . . . . 254--254
Anonymous Speeding Up the Auto-Tag Industry,
Symbiosis in the Forest, and more . . . 255--255
Leon Augustus Hausman The Microscopy of Foods . . . . . . . . 256--257
Anonymous Production of Rust by Carbonic Acid . . 257--257
M. Luckiesh The Ultraviolet in Sunlight . . . . . . 258--258
Anonymous Practical Uses for the Spectroscope,
Secret Radio Communication . . . . . . . 259--259
Anonymous Making Wool Moth-Proof . . . . . . . . . 260--260
Anonymous Hearing Through a Walking Stick . . . . 266--266
Anonymous Information Leaflet Issued By Patent
Office . . . . . . . . . . . . . . . . . 273--273
Anonymous Editorials: Our Point of View . . . . . 306--307
Anonymous Inventions New and Interesting . . . . . 335--338
Ismar Ginsberg The Service of the Chemist . . . . . . . 339--339
Victor W. Page The Motor-Driven Commercial Vehicle . . 341--341
Henry Norris Russell The Heavens in November, 1922 . . . . . 342--342
Anonymous Recently Patented Inventions . . . . . . 343--348
Anonymous Science Notes . . . . . . . . . . . . . 354--355
Anonymous Miscellaneous Notes . . . . . . . . . . 356--357
Anonymous Civil Engineering Notes . . . . . . . . 358--358
Anonymous Electrical Notes . . . . . . . . . . . . 362--363
Anonymous Radio Notes . . . . . . . . . . . . . . 364--365
Anonymous With the Editors . . . . . . . . . . . . 295--295
Anonymous International Fisherman's Deep-Sea Race 297--297
Anonymous Gliders and Gliding . . . . . . . . . . 298--299
Edward H. Smith Safes and Safe-Breakers --- II . . . . . 300--301
J. Malcolm Bird To Keep the Home Fires Burning . . . . . 302--303
Frederick Harrison Burlingham A Cable-Way Among the Clouds . . . . . . 304--304
Anonymous Wood-Wasps Which Gnaw Through Leaden
Plates . . . . . . . . . . . . . . . . . 304--305
Anonymous Keeping Irrigation Ditches Clear . . . . 305--305
Francis P. Mann From the Bourse to Wall Street . . . . . 308--309
Anonymous Measuring the Load on Locomotive Wheels,
Electric Tire-Heating Apparatus . . . . 310--310
S. W. Clatworthy Direct-Drive Diesel Locomotive of Novel
Design Proposed by a British Engineer 311--311
Anonymous When Gears and Levers Replace the Cigar
Maker's Adept Fingers . . . . . . . . . 312--312
Henry Woodward Hulbert Irrigation and Water-Power in Palestine 313--313
Benno Lowy Conserving Crops by Fumigation . . . . . 313--313
James H. Collins A Big Job in Fine Dimensions . . . . . . 314--315
Anonymous The Musical Typewriter --- A Device for
Transposing and Recording Music . . . . 315--315
F. Rowlinson When Optical Illusions Aid the Engineer 316--316
Anonymous Taking Bossie's Nose-Print, The Benefits
of Research in Agriculture, and more . . 317--317
C. C. Williams Post-War Artillery . . . . . . . . . . . 318--319
C. H. Claudy Motion Pictures by Radio . . . . . . . . 320--321
H. G. Murray Our Chinese Customers . . . . . . . . . 322--323
Anonymous When Tracks Tell their Troubles . . . . 324--324
Anonymous Putting Glassware Through the
Testing-Mill, Applications of the
Thermionic Valve, and more . . . . . . . 325--325
Donald A. Laird Hypnotism --- Fact or Fake? . . . . . . 326--326
Anonymous Steam Baths Among the California
Indians, A Possible Reconciliation of
the Atomic Models of Bohr and of Lewis
and Langmuir, and more . . . . . . . . . 327--327
Anonymous Individual Atmospheres Made to Order . . 328--329
Anonymous Beating Lightning at its Own Favorite
Game . . . . . . . . . . . . . . . . . . 329--329
Hemstead Castle The Catapult of the Fern . . . . . . . . 330--330
Anonymous The Tides . . . . . . . . . . . . . . . 330--330
Anonymous Eliminating Static by Means of the
Resonance Coil, Handling the Parachute
on the Ground, and more . . . . . . . . 331--331
Guy Elliot Mitchell Our Strenuous Geological Survey --- IV 332--333
Robert S. Ridgway The Size of a Molecule, Testing the Drag
of Farming Machinery . . . . . . . . . . 334--334
Anonymous Reversing the Order of Threshing,
Beet-Top Silage in the Ground, and more 340--340
Anonymous Inventions New and Interesting . . . . . 413--416
Ismar Ginsberg The Service of the Chemist . . . . . . . 417--417
Henry Norris Russell The Heavens in December, 1922 . . . . . 418--418
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 419--419
Anonymous Recently Patented Inventions . . . . . . 420--426
Anonymous Science Notes . . . . . . . . . . . . . 428--428
Anonymous Miscellaneous Notes . . . . . . . . . . 430--430
Anonymous Civil Engineering Notes . . . . . . . . 434--435
Anonymous Electrical Notes . . . . . . . . . . . . 436--436
Anonymous Mechanical Engineering Notes . . . . . . 437--437
Anonymous Radio Notes . . . . . . . . . . . . . . 438--438
Anonymous Our Readers' Point of View . . . . . . . 439--439
Anonymous Index To Volume 127 . . . . . . . . . . 447--448
Anonymous With the Editors . . . . . . . . . . . . 371--371
Anonymous The Largest Cruising Airdrome . . . . . 373--373
Edward H. Smith Inventor vs. Forger --- I . . . . . . . 374--375
Harold Cary Are You a Musician? . . . . . . . . . . 376--377
Anonymous About the Radio Round-Table . . . . . . 378--379
Anonymous Editorials: Our Point of View . . . . . 380--381
D. H. George What Is There Left To Do? . . . . . . . 382--383
Archibald Black The Pulitzer Trophy . . . . . . . . . . 384--384
Anonymous A Super-Locomotive With the Latest
Improvements, Bud Mutations . . . . . . 385--385
Anonymous Finger-Prints Via Radio . . . . . . . . 386--386
Anonymous Painting a Wire Fence Without Waste of
Paint, Radiators for Aircraft Engines,
and more . . . . . . . . . . . . . . . . 387--387
J. Malcolm Bird A Square Deal for the Psychics . . . . . 388--389
George H. Dacy Lighting the Mississippi . . . . . . . . 390--390
Anonymous Sleeve-Valve Engines for Motorcycles,
Cleaning Wheat at the Thrashing Machine 391--391
Anonymous Flood Control at Kansas City . . . . . . 392--392
Anonymous Life-Belts and Near-Life-Belts --- A
Study of Government Regulation and an
Invention, A Police Baton Furnished with
a Flashlight . . . . . . . . . . . . . . 393--393
Emanuel Scheyer When Perforated Paper Goes to Work . . . 394--395
Anonymous The Rigid Track-Layer . . . . . . . . . 395--395
Lloyd E. Jackson The Dry-Cleaning and Dyeing Industry . . 396--396
Anonymous Large Portable Water Tanks, The
Air-Cooling of 1923, and more . . . . . 397--397
George H. Dacy Millions in Food from Federal Free Seed 398--399
Ray M. Hudson The New Conservation --- I . . . . . . . 400--400
Anonymous Gear-Testing Machines, Keeping Springs
Young . . . . . . . . . . . . . . . . . 401--401
Anonymous America's Busiest Radio Station . . . . 402--402
Anonymous A Novel Method of Pumping Water, Recent
Developments in British Pelton Wheel
Design . . . . . . . . . . . . . . . . . 403--403
Francis P. Mann Forgery or Genuine? . . . . . . . . . . 404--404
Anonymous Harvesting Sugar-Beet Seed in Sleds,
Iron Ore in Europe, and more . . . . . . 405--405
Anders Bull Fog Signaling by Polarized Sound . . . . 406--407
Anonymous Taking Away from a Picture to Get a
Larger Picture, The Muscle as a Motor 407--407
Anonymous Blasting a Channel Through a River's
Rocky Bottom . . . . . . . . . . . . . . 408--409
Anonymous Radio Direction-Finding in Flying
Machines . . . . . . . . . . . . . . . . 409--409
Leon Augustus Hausman Virgin Wool and Shoddy . . . . . . . . . 410--411
Anonymous Treasures from Cinders . . . . . . . . . 411--411
Marcus Benjamin James Playfair McMurrick, Temperatures
in the United States, and more . . . . . 412--412
Anonymous The Naturalist's Corner . . . . . . . . 432--432
Anonymous Chemistry Notes . . . . . . . . . . . . 442--442
Anonymous Editorials: Our Point of View . . . . . 12--13
Anonymous Inventions New and Interesting . . . . . 43--46
Ismar Ginsberg The Service of the Chemist . . . . . . . 47--47
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 49--49
Henry Norris Russell The Heavens in January, 1923 . . . . . . 50--50
Anonymous Recently Patented Inventions . . . . . . 51--55
Anonymous Our Readers' Point of View . . . . . . . 56--56
Anonymous Science Notes . . . . . . . . . . . . . 60--60
Anonymous Miscellaneous Notes . . . . . . . . . . 62--62
Anonymous Civil Engineering Notes . . . . . . . . 63--63
Anonymous Mechanical Engineering Notes . . . . . . 64--64
Anonymous Radio Notes . . . . . . . . . . . . . . 65--65
Anonymous Electrical Notes . . . . . . . . . . . . 66--72
Anonymous With the Editors . . . . . . . . . . . . 3--3
Anonymous Motion Pictures in Three Dimensions . . 5--5
J. Malcolm Bird and
for the Scientific American and
the Committee Our Psychic Investigation . . . . . . . 6--7
Edward H. Smith Inventor vs. Forger --- II . . . . . . . 8--9
Anonymous The President's Plea for a Merchant
Marine . . . . . . . . . . . . . . . . . 10--10
Anonymous Rapid Transit on a Moving Belt . . . . . 10--11
Harry A. Mount Fuel by the Ton or the Gallon? . . . . . 14--15
William A. Mulcahy Two Bridges in One --- Chicago's
Michigan Avenue Bridge . . . . . . . . . 16--16
Alfred Gradenwitz Doing Two Things at Once . . . . . . . . 17--17
Anonymous The Sense of Smell in Birds . . . . . . 17--17
Anonymous An All-Steel Grandstand, Death from
snake-Bites, and more . . . . . . . . . 18--18
Anonymous Pictures that Talk . . . . . . . . . . . 19--19
Crede Haskins Calhoun Panama Canal Tolls . . . . . . . . . . . 20--20
Charles Sheard Research and Spectacles . . . . . . . . 21--21
Anonymous Novel Means of Testing Levers . . . . . 21--21
Jerome Lachenbruch The Fight to Conquer Old Age . . . . . . 22--22
Ismar Ginsberg Apparent Death and Resuscitation . . . . 22--23
Anonymous Our Aladdin's Lamp . . . . . . . . . . . 24--24
Anonymous A Gear With Only One Tooth, Escape from
the Garbage Can, and more . . . . . . . 25--25
Anonymous Leaves from the Archaeologist's
Note-Book . . . . . . . . . . . . . . . 26--27
Anonymous Summer Foods in the Winter Time, The
Ascent of Sap in Trees . . . . . . . . . 27--27
Ray M. Hudson The New Conservation --- II . . . . . . 28--28
Gilbert I. Stodola and
Alfred Gradenwitz On the Trail of the Taxi Driver, The
Flickerless Projector . . . . . . . . . 29--29
Anonymous Making the Mississippi Rebuild its Banks 30--31
Anonymous When Alaska Forest Rangers Travel by
Motor Boat, The Life-Cycles of Bacteria,
and more . . . . . . . . . . . . . . . . 31--31
C. H. Claudy Airplanes in the Public Consciousness 32--32
E. M. Stevenson A New Principle in Plowing and Road
Surfacing and Ice Surfacing, Soil
Acidity Preferences of Some Eastern
Conifers . . . . . . . . . . . . . . . . 33--33
E. Bade Between Two Worlds . . . . . . . . . . . 34--34
Anonymous A Garden Telescope for the Amateur
Astronomer, The Pocket
Barometer-Altimeter, and more . . . . . 35--35
Anonymous The Story of Gas . . . . . . . . . . . . 36--37
Anonymous A Practical Contact Attachment, New Neon
Lamps . . . . . . . . . . . . . . . . . 37--37
Anonymous Bridge Construction With Floating Steel
Centers . . . . . . . . . . . . . . . . 38--38
Anonymous Sideways Launching Made Safer and Surer,
Centrifugal Car-wheels with
Manganese-Steel Rims, and more . . . . . 39--39
Leonard Matters A Builder's Paradise . . . . . . . . . . 40--40
Anonymous Removing Spots from Leather by Means of
Rubber . . . . . . . . . . . . . . . . . 40--40
L. Pyle Tricks of Over-Exposure, New Method for
Revising Copper Map Plates . . . . . . . 41--41
Anonymous Building a Railroad in the Frozen North 42--42
Charles Evan Fowler Our Startling Automobile Traffic,
Keeping the Gasoline Out of the
Crankcase . . . . . . . . . . . . . . . 48--48
J. Malcolm Bird Relativity --- And Other Things . . . . 58--58
Anonymous Radio on the Screen --- A Review of the
\booktitleScientific American Film . . . 59--59
Anonymous Editorials: Our Point of View . . . . . 86--87
Anonymous Inventions New and Interesting . . . . . 115--118
Ismar Ginsberg and
Chemical Engineer Service of the Chemist . . . . . . . . . 119--119
Victor W. Page The Motor-Driven Commercial Vehicle . . 121--121
Hennry Norris. Russell The Heavens in February, 1923 . . . . . 122--122
Anonymous Recently Patented Inventions . . . . . . 123--129
Anonymous Science Notes: Science notes . . . . . . 129--132
Anonymous Miscellaneous Notes . . . . . . . . . . 132--134
Anonymous Mechanical Engineering Notes . . . . . . 134--134
Anonymous Civil Engineering Notes . . . . . . . . 135--135
Anonymous Radio Notes . . . . . . . . . . . . . . 136--137
Anonymous Archeology: Archaeological Notes . . . . 137--138
Anonymous Electrical Notes . . . . . . . . . . . . 138--139
Anonymous With the Editors . . . . . . . . . . . . 75--75
Anonymous The Coal Ration . . . . . . . . . . . . 77--77
Henry Norris Russell The Census of the Stars . . . . . . . . 78--79
Samuel J. Record When We Build Our House . . . . . . . . 80--81
Anonymous The Extermination of Insects . . . . . . 81--81
George H. Dacy When Will Automobiles be Perfect? . . . 82--82
Ismar Ginsberg The Chemical Go-Between . . . . . . . . 82--82
Anonymous Airships and Motherships of the Future 83--83
J. Malcolm Bird Our Psychic Investigation . . . . . . . 84--84
V. M. Whiting The New Home of the National Academy of
Sciences, Seeing to Taste . . . . . . . 85--85
E. Bade The Heart and the Heartbeat of the Plant 88--89
Anonymous Most Powerful Reciprocating Steam Engine
Ever Built . . . . . . . . . . . . . . . 89--89
Anonymous An Amphibious Military Tank, The
Perpetual Calendar, and more . . . . . . 90--90
Anonymous A Turbine Locomotive Which Saves Half
the Coal . . . . . . . . . . . . . . . . 91--91
Anonymous Doubling New York's Water Supply . . . . 92--92
Anonymous Lightning's Pranks, Assembling an Aerial
Survey . . . . . . . . . . . . . . . . . 93--93
Harry A. Mount Getting Along With the Boll Weevil . . . 94--95
Anonymous Musical Broadcasting Experiments . . . . 95--95
F. C. Allen, Jr. Taking the Menace Out of Dust . . . . . 96--96
E. Bade Making Big Photographs of Little Things 97--97
Ray M. Hudson The New Conservation --- III . . . . . . 98--98
Anonymous Completion of a Notable Concrete
Viaduct, Moving a Town by Motor Truck 99--99
J. F. Springer A Mechanical Solution of a Literary
Problem . . . . . . . . . . . . . . . . 100--100
S. R. Winters Vivisection and Animal Industry . . . . 101--101
Ismar Ginsberg Finding Uses for Raw Rubber . . . . . . 101--101
Charles Henry Dorr Fishing for Pearls . . . . . . . . . . . 102--103
Leonard Matters Railroad Building in the Andes . . . . . 104--105
Anonymous Wearing Red and Green Spectacles to See
Stereoscopic ``Movies'', Testing Kiln
Circulation With Chemical Smoke . . . . 105--105
Anonymous Long-Distance Telephone Problems . . . . 106--108
J. Bernard Walker The World's Largest Vehicular Tunnel . . 108--109
George E. Beggs From Paper Model to Concrete Arch . . . 110--110
Anonymous What Life Is . . . . . . . . . . . . . . 110--110
Anonymous How Electricity Causes Death . . . . . . 111--111
Anonymous A Safer Way of Bleaching Foods . . . . . 111--111
Anonymous Tungsten' at Extreme Temperatures . . . 111--112
F. Rowlinson Fighting the Friction Fiend . . . . . . 112--113
John K. Cochran Construction of a Steam-Turbine Wheel 113--113
Anonymous Power from a Whip, Cleansing New York
Harbor . . . . . . . . . . . . . . . . . 114--114
Anonymous Storage Batteries that are Out of the
Ordinary, Radio-Frequency Amplifiers . . 120--120
Anonymous Automobile Notes . . . . . . . . . . . . 139--146
Anonymous Editorials: Our Point of View . . . . . 156--157
Anonymous Inventions New and Interesting . . . . . 187--190
Ismar Ginsberg The Service of the Chemist . . . . . . . 191--191
Victor W. Page The Motor-Driven Commercial Vehicle . . 193--193
Henry Norris Russell The Heavens in March, 1923 . . . . . . . 194--194
Anonymous Recently Patented Inventions . . . . . . 195--198
Anonymous Science Notes . . . . . . . . . . . . . 202--204
Anonymous Electrical Notes . . . . . . . . . . . . 206--206
Anonymous Civil Engineering Notes . . . . . . . . 208--208
Anonymous Mechanical Engineering Notes . . . . . . 209--209
Anonymous Miscellaneous Notes . . . . . . . . . . 210--210
Anonymous Radio Notes . . . . . . . . . . . . . . 212--213
Anonymous With the Editors . . . . . . . . . . . . 147--147
Anonymous Where the Workman's Wages Go . . . . . . 149--149
Albert A. Hopkins Digging Back Three Thousand Years . . . 150--152
Francis P. Mann Gasoline Camels . . . . . . . . . . . . 153--153
Anonymous Six Stages in One . . . . . . . . . . . 154--155
Harold Cary More House for Less Money . . . . . . . 158--159
J. Malcolm Bird Our Psychic Investigation . . . . . . . 160--160
Anonymous Skimming Fuel Oil from Harbor Surface,
Optical Specifications for Glass for
Balloon Hangars, and more . . . . . . . 161--161
Anonymous The March of Science for 1922 . . . . . 162--162
Anonymous Emissivity of Roofing Materials . . . . 162--162
Anonymous A Steel-Ribbed House for the Deep-Sea
Diver, The Mechanical Pitcher . . . . . 163--163
Hector C. Bywater Are Huge Aircraft Carriers Worth While? 164--164
Anonymous Nicotine in Your Tobacco and Tobacco
Smoke . . . . . . . . . . . . . . . . . 164--164
Anonymous Cleaning Railroad Track With a
Power-Driven Sweeper, Root Respiration,
and more . . . . . . . . . . . . . . . . 165--165
R. P. Crawford The Mysteries of the Modern Organ . . . 166--167
Anonymous When Electricity Magnifies the Speaker's
Voice . . . . . . . . . . . . . . . . . 167--167
John Lathrop Highway Traffic Despatching . . . . . . 168--168
Anonymous Microbes and Weather . . . . . . . . . . 169--169
Anonymous The Ostwald Color Atlas . . . . . . . . 169--169
Harry A. Mount Our Smallest Toilers . . . . . . . . . . 170--171
Anonymous Mind as the Coping-Stone, Architectural
Acoustics . . . . . . . . . . . . . . . 171--171
Oliver S. Arata Water to Drink . . . . . . . . . . . . . 172--172
Allen P. Child and
George H. Dacy Shadow-Testing of Gear Teeth, The Radio
Typewriter for Airplanes . . . . . . . . 173--173
George Illington New Foods for Old . . . . . . . . . . . 174--175
Charles Frederick Carter Ventilating a Vehicular Tunnel . . . . . 176--177
Anonymous The Biggest Shovel, Electric
Conductivity and Bio-Physical Energy . . 177--177
Anonymous From Horse-Driven Ferry to Steel Bridge 178--178
Anonymous Spectrophotoelectrical Sensitivity of
Bournonite and Pyrargyrite . . . . . . . 178--178
Anonymous From Battleship to Floating Crane, Night
Lights without Insects, and more . . . . 179--179
Anonymous New Method of Salvage by Compressed Air 180--181
Anonymous Canned Music . . . . . . . . . . . . . . 182--182
A. Gradenwitz How Iron Rust Grows, Problems Relating
to Saggars, and more . . . . . . . . . . 183--183
Ismar Ginsburg When We Paint Our House . . . . . . . . 184--184
J. F. Springer Digging from Below, Up . . . . . . . . . 185--186
Anonymous Measuring the Tractor's Performance,
Moving a Church of 3200 Tons . . . . . . 186--186
N. H. Heck Where the Compass Fails to Guide,
Measuring Water Flow With a Camera . . . 192--192
Anonymous Editorials: Our Point of View . . . . . 228--229
Anonymous Inventions New and Interesting . . . . . 259--262
Ismar Ginsberg Service of the Chemist . . . . . . . . . 263--263
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 265--265
Henry Norris Russell The Heavens in April, 1923 . . . . . . . 266--266
Anonymous Recently Patented Inventions . . . . . . 267--270
Anonymous Science Notes . . . . . . . . . . . . . 273--274
Anonymous Miscellaneous Notes . . . . . . . . . . 275--276
Anonymous Electrical Notes . . . . . . . . . . . . 277--278
Anonymous Exploration Notes: Travel and
Exploration Notes . . . . . . . . . . . 279--279
Anonymous Archeology: Archaeological Notes . . . . 280--281
Anonymous Mechanical Engineering Notes . . . . . . 282--282
Anonymous Aeronautical Notes . . . . . . . . . . . 283--283
Anonymous Radio Notes . . . . . . . . . . . . . . 284--284
Anonymous With the Editors . . . . . . . . . . . . 219--219
Ernst Foerster Big and Fast Liners of the Future . . . 221--223
Anonymous Atoms: Their Size and Number . . . . . . 223--223
Anonymous Sand-Blasting the Clouds for Man-Made
Weather . . . . . . . . . . . . . . . . 224--224
Anonymous A New Version of the Revolving Stage
Idea . . . . . . . . . . . . . . . . . . 224--225
Roy A. Giles Bombs and Bomb Plots . . . . . . . . . . 226--227
Albert A. Hopkins Pompeii Uncovered . . . . . . . . . . . 230--231
S. G. Roberts Tiny Air Bubbles and Giant Dams . . . . 232--232
Anonymous Curious Concrete Bridge Tests, A Rush
Job in Dam Construction . . . . . . . . 233--233
A. Gradenwitz Current Psychic Investigation in Europe 234--234
Anonymous Our Giant ZR-1 in the Making . . . . . . 235--235
Anonymous A Reservoir with Cathedral Architecture,
An Electron Tube Amplifier Using A.C.
Current for Filaments and Plates . . . . 236--236
Anonymous Floating a Bridge Into Place Section by
Section, Effects of Local Conditions on
Radio Direction-Finding, and more . . . 237--237
Guy Elliot Mitchell Gasoline from Natural Gas . . . . . . . 238--238
Anonymous The Physiology of Sweating, Food for
Brain Workers, and more . . . . . . . . 239--239
Ivan E. Houk Taking the Kinks Out of Our Rivers . . . 240--241
John Liston Twelve Months of Radio . . . . . . . . . 242--242
Anonymous Our Army's Helicopter, Variable Surface
Wings for Variable Speed Airplanes, and
more . . . . . . . . . . . . . . . . . . 243--243
P. J. Risdon Irrigation in Australia . . . . . . . . 244--245
Robert G. Skerrett A Key to Many Industries . . . . . . . . 246--247
S. F. Aaron The Minstrel Frogs . . . . . . . . . . . 248--248
Anonymous Powerful Wrecking Derrick for the
Virginian Railway, The Sources and
Characteristics of the Bacteria in
Decomposing Salmon, and more . . . . . . 249--249
Hector C. Bywater Where British Patents Come From . . . . 250--250
Anonymous Powerful Steam Fire and Salvage Boat,
Another Walking Tractor . . . . . . . . 251--251
Anonymous Fulfilling the Washington Naval Treaty 252--253
Charles W. Geiger Harnessing California's Waters . . . . . 254--254
H. V. Hilker Concerning the Age of the Earth . . . . 256--257
Anonymous Something New in Tubes: The Donle
Non-Interfering Detector, A Microphonic
Amplifier for Crystal Detector Sets . . 258--258
J. W. Harsch Short-Time Tests for Long-Time Endurance 264--264
Anonymous Editorials: Our Point of View . . . . . 300--301
Anonymous Inventions New and Interesting . . . . . 331--334
Ismar Ginsberg and
Chemical Engineer The Service of the Chemist . . . . . . . 335--335
Henry Norris Russell The Heavens in May, 1923 . . . . . . . . 336--336
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 337--337
Anonymous Recently Patented Inventions . . . . . . 338--340
Anonymous Science Notes . . . . . . . . . . . . . 342--342
Anonymous Mechanical Engineering Notes . . . . . . 350--350
Anonymous Radio Notes . . . . . . . . . . . . . . 354--355
Anonymous Electrical Notes . . . . . . . . . . . . 356--356
Anonymous With the Editors . . . . . . . . . . . . 291--291
Anonymous Our Transportation Industry . . . . . . 293--293
Edward H. Smith The Burglar and the Alarm . . . . . . . 294--295
T. George Allen Tutenkhamon's Tomb . . . . . . . . . . . 296--296
Littell McClung Taking Nitrogen from the Air . . . . . . 298--299
Anonymous Extinct Races of Ape-Like Man . . . . . 302--303
Anonymous The Washington Conference Battleship . . 304--304
Anonymous What One Thousand Horsepower Means in
Power Producers on Land and on Water and
in the Air . . . . . . . . . . . . . . . 305--305
Anonymous A Man-Made Amphibian, New Type of Timber
Joint-Plate, and more . . . . . . . . . 306--306
J. Malcolm Bird Our Psychic Investigation in Europe ---
I . . . . . . . . . . . . . . . . . . . 307--308
Anonymous The Georgetown Bridge Over the Potomac,
Jacking Out the Stumps . . . . . . . . . 309--309
Anonymous Islands in the Making . . . . . . . . . 310--310
Anonymous Better Lungs for Miners, The
Milk-Container Car . . . . . . . . . . . 311--311
L. Lodian Foreign Foods in American Cities . . . . 312--313
P. J. Risdon When the Camera Turns Sculptor . . . . . 314--314
Anonymous Sectional Safes of Concrete and Iron,
Phosphorescent Light of Fireflies, and
more . . . . . . . . . . . . . . . . . . 315--315
Arthur L. Dahl Feeding the Soils . . . . . . . . . . . 316--316
Anonymous Making the Airplane Radiator and Wing in
One, Equipping the Soaring Plane with a
Small Engine . . . . . . . . . . . . . . 317--317
Samuel J. Record An Old Friend in New Dress . . . . . . . 318--319
Anonymous Big-Wheel Log Hauling, Jacking Out the
Stumps . . . . . . . . . . . . . . . . . 319--319
S. R. Winters Why Grade Crossing Accidents? . . . . . 320--320
Anonymous Carbon Formation in Engine Cylinders . . 320--320
Anonymous The Los Angeles Coliseum --- One of the
World's Greatest Structures, Athletics
and Oxygen Supply, and more . . . . . . 321--321
Anonymous The Valley of Ten Thousand Smokes . . . 322--322
Alexander Klemin The Handwriting on the Sky --- the Most
Recent and Compelling Method of
Advertising, The Transport of Organic
Substances in Plants, and more . . . . . 323--323
Anonymous Hudson River Bridge at Bear Mountain . . 324--325
Anonymous A High-Pressure Tank to Cure the Ill
Effects of Pressure, A Novel Surgical
Tool, and more . . . . . . . . . . . . . 326--326
D. H. George From Battlefield to Road Jobs . . . . . 327--327
George H. Dacy Mapping from the Skies . . . . . . . . . 328--329
Anonymous Convenience of Bridge and Tunnels
Compared, Sounding by Sound . . . . . . 330--330
Anonymous Editorials: Our Point of View . . . . . 374--375
Anonymous Inventions New and Interesting . . . . . 401--404
Ismar Ginsberg and
Chemical Engineer The Service of the Chemist . . . . . . . 405--405
Henry Norris Russell The Heavens in June, 1923 . . . . . . . 406--406
Victor W. Page The Motor-Driven Commercial Vehicle . . 407--407
Anonymous Recently Patented Inventions . . . . . . 408--413
Anonymous Correspondence . . . . . . . . . . . . . 414--416
Anonymous Miscellaneous Notes . . . . . . . . . . 416--416
Anonymous Exploration Notes . . . . . . . . . . . 417--418
Anonymous Civil Engineering Notes . . . . . . . . 418--418
Anonymous Mechanical Engineering Notes . . . . . . 419--419
Anonymous Electrical Notes . . . . . . . . . . . . 420--421
Anonymous Science Notes . . . . . . . . . . . . . 422--423
Anonymous Radio Notes . . . . . . . . . . . . . . 426--427
Anonymous With the Editors . . . . . . . . . . . . 363--363
John T. Rowland Hudson's Bay, the ``Neglected Sea'' . . 365--365
Edward H. Smith Your Automobile and the Thief . . . . . 366--367
Guy E. Mitchell Platinum . . . . . . . . . . . . . . . . 368--369
Ismar Ginsberg Alcohol and the Bootlegger . . . . . . . 370--370
Anonymous Electrical Statistics at a Glance . . . 371--371
A. G. Ingalls Tearing Down to Build Again . . . . . . 372--373
Anonymous The Oscilloscope . . . . . . . . . . . . 376--376
Anonymous An Electric Speedometer . . . . . . . . 377--377
Anonymous Curious Feat of House Moving,
Transmission of Standard Radio Wave
Length Signals, and more . . . . . . . . 378--378
J. Malcolm Bird Our Psychic Investigation in Europe ---
II . . . . . . . . . . . . . . . . . . . 379--380
Anonymous Stretching the Gasoline Supply, Gasoline
and Alcohol as Fuels of the Future, and
more . . . . . . . . . . . . . . . . . . 381--381
S. F. Aaron Master Builders Called Insects . . . . . 382--382
Anonymous Pilgrims in Make-Believe Land . . . . . 383--383
E. Bade Budding . . . . . . . . . . . . . . . . 384--384
Anonymous Combining High Voltage with Compactness
in Storage Battery Construction, Using
Wood Waste to Halt Decay, and more . . . 385--385
Milfeurn Moore Speeding Up Track Work . . . . . . . . . 386--386
Anonymous Timing an Ice Sheet, Taking the ``if''
Out of construction . . . . . . . . . . 387--387
Anonymous The All-Devouring Marine Borer . . . . . 388--389
Anonymous Cheaper and Better Houses, Electron Tube
Detector Unit for Radio Reception . . . 389--389
Alber Neuberger Peaceful Conquest . . . . . . . . . . . 390--390
Anonymous Gothenburg Jubilee Exposition, The
Meaning of Grade A, Grade B or Grade C
with Reference to Milk, and more . . . . 391--391
Harry A. Mount Getting Our Money's Worth in Fertilizer 392--393
Anonymous A Home-Made Distributor for Fertilizer,
Planting an Acre and a Half an Hour . . 393--393
O. Van Wyck, Jr. Landscapes With a Jigsaw . . . . . . . . 394--394
Anonymous A Precise Torch Cutting Machine,
Publications on Building and Housing,
and more . . . . . . . . . . . . . . . . 395--395
Anonymous A Record Job of Pile Driving . . . . . . 396--397
Alfred McEwen Writing for the Microscopic Eye . . . . 398--398
Anonymous Erecting an Arch Bridge by Means of the
Suspension Bridge Which it Supplants,
Cocaine and Cocoa, and more . . . . . . 399--399
Anonymous The Aerial Lighthouse, Growth of World's
Merchant Shipping and more . . . . . . . 400--400
Anonymous Editorials: Our Point of View . . . . . 12--13
Anonymous Inventions New and Interesting . . . . . 43--46
Ismar Ginsberg The Service of the Chemist . . . . . . . 47--47
Henry Norris Russell The Heavens in July, 1923 . . . . . . . 48--48
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 49--49
Anonymous Recently Patented Inventions . . . . . . 50--54
Anonymous Our Readers' Point of View . . . . . . . 55--55
Anonymous Science Notes . . . . . . . . . . . . . 57--59
Anonymous Electrical Notes . . . . . . . . . . . . 59--60
Anonymous Mechanical Engineering Notes . . . . . . 61--61
Anonymous Civil Engineering Notes . . . . . . . . 62--62
Anonymous Miscellaneous Notes . . . . . . . . . . 63--63
Anonymous Radio Notes . . . . . . . . . . . . . . 66--68
Anonymous With the Editors . . . . . . . . . . . . 3--3
Anonymous Ocean travel by combined steamship and
airplane . . . . . . . . . . . . . . . . 5--5
Edward H. Smith Trapping the Burglar . . . . . . . . . . 6--7
Littell McClung Building the World's Largest Monolith 8--9
Anonymous World Metric Standardization, Ro, and
more . . . . . . . . . . . . . . . . . . 9--9
Ralph Howard Uncle Sam's Agricultural Proving Grounds 10--11
J. Malcolm Bird Our First Test Seances . . . . . . . . . 14--14
Anonymous Three Notable Locomotives Which Mark the
Trend of Railroading . . . . . . . . . . 15--15
Anonymous Are Most Animals Color Blind? . . . . . 16--17
S. W. Clatworthy Acrobatic Coal Barges . . . . . . . . . 17--18
J. Malcolm Bird Our Psychic Investigation in Europe ---
III . . . . . . . . . . . . . . . . . . 19--20
Anonymous Mathematically Perfect Balls of Lead
Called Shot . . . . . . . . . . . . . . 21--21
George H. Dacy Where Corn is King . . . . . . . . . . . 22--23
Anonymous The Fourth Dimension, A New Vitamin
Bread, and more . . . . . . . . . . . . 23--23
Anonymous When a Bridge Tells its Troubles . . . . 24--24
Anonymous Intensity and Duration of Fire . . . . . 24--24
Anonymous A New Gasoline-Electric Freight Train,
Another Cotton Picker, and more . . . . 25--25
Hector C. Bywater Elevation and Range of British Naval
Guns . . . . . . . . . . . . . . . . . . 26--27
Anonymous Obelisk-Raising Explained . . . . . . . 27--27
Vicente Villamin Industry in the Philippines . . . . . . 28--29
D. H. George Fighting the Mosquito . . . . . . . . . 30--30
Anonymous Marine Wood Borers at Work, Shop-Made
Lawns by the Yard, and more . . . . . . 31--31
Anonymous Underpinning the Washington Monument . . 32--32
Anonymous A Canal that Grows Crops in a Barren
Country, Harnessing the California
River, and more . . . . . . . . . . . . 33--33
S. R. Winters Draining Land With Gasoline . . . . . . 34--34
Anonymous Concrete in Surprising Places, Poisoning
by Illuminating Gas . . . . . . . . . . 35--35
Anonymous Solving the Street Traffic Problem . . . 36--37
Anonymous Digging in Sacred Soil . . . . . . . . . 38--39
J. F. Springer Sawing Stones With Man-Made Stones . . . 40--41
Anonymous The Physical Basis of Life, Pure Ozone,
and more . . . . . . . . . . . . . . . . 41--41
Anonymous The Airplane-Carrier ``Langley'' . . . . 42--42
Anonymous Editorials: Our Point of View . . . . . 84--85
Anonymous Inventions New and Interesting . . . . . 117--120
Ismar Ginsberg The Service of the Chemist . . . . . . . 121--121
Henry Norris Russell The Heavens in August, 1923 . . . . . . 122--122
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 123--123
Anonymous Our Readers' Point of View . . . . . . . 124--124
Anonymous Recently Patented Inventions . . . . . . 125--128
Anonymous Miscellaneous Notes . . . . . . . . . . 130--130
Anonymous Science Notes . . . . . . . . . . . . . 132--132
Anonymous Electrical Notes . . . . . . . . . . . . 134--134
Anonymous Mechanical Engineering Notes . . . . . . 137--137
Anonymous Radio Notes . . . . . . . . . . . . . . 138--139
Anonymous With the Editors . . . . . . . . . . . . 75--75
Anonymous Features of a properly constructed brick
and frame residence, with the commonly
used terms . . . . . . . . . . . . . . . 77--77
Edward H. Smith Invention and the ``Grifter'' . . . . . 78--79
A. G. Ingalls Camouflage and Carpentry . . . . . . . . 80--81
S. G. Roberts The Paper of the Future . . . . . . . . 82--83
J. Malcolm Bird Our Psychic Investigation in Europe ---
IV . . . . . . . . . . . . . . . . . . . 86--86
Anonymous A Graphic Showing of American Automobile
Statistics for 1923 . . . . . . . . . . 87--87
Anonymous A Giant Among Gigantic Wind Tunnels, A
Model Railway in the Workaday World, and
more . . . . . . . . . . . . . . . . . . 88--88
Anonymous The Trans-Atlantic Race . . . . . . . . 89--89
George V. Haskell Summer Time and Radio . . . . . . . . . 90--91
Anonymous Another Forward Step in Electrification 92--92
Anonymous Light Weight Cement Slabs that Take the
Place of Lumber in Building Operations,
Dahlia Sugar, and more . . . . . . . . . 93--93
Lee DeForest When Light Speaks . . . . . . . . . . . 94--94
Anonymous Spherical Aberration in Thin Lenses . . 94--94
C. McKnight Smith New United States Scout Cruiser
``Richmond'' --- Fastest of its Type . . 95--95
E. Bade Insect-Eating Insects . . . . . . . . . 96--96
Robert G. Skerrett Immunizing Cabbage by Natural Selection 97--97
Anonymous The Loudest Voiced Bird, Geography and
Intelligence . . . . . . . . . . . . . . 97--97
Frank Munro Diamonds from Guiana . . . . . . . . . . 98--98
Anonymous A Beacon for Aviators, The Gipsy Moth
and Dead Trees, and more . . . . . . . . 99--99
B. R. Cummings Carrier Current Telephony . . . . . . . 100--100
A. Gradenwitz Making Old Air Better than New, Chemical
Analysis with the Spectroscope . . . . . 101--101
Eloise Gerry and
T. R. Truax What Makes Glue Stick? . . . . . . . . . 102--102
Anonymous Solders for Aluminum, A Draw Bridge
Which Slides Diagonally, and more . . . 103--103
George S. Eaton Concrete in the Making . . . . . . . . . 104--105
S. R. Winters Where the Temperature is 434 Degrees
Below Zero . . . . . . . . . . . . . . . 106--106
Anonymous When the Packer Turns Inventor, Marking
Laundry by Machine . . . . . . . . . . . 107--107
Anonymous The Reconstructed Leviathan . . . . . . 108--109
George H. Dacy Women on the Farm . . . . . . . . . . . 110--110
Anonymous A Dummy Aircraft Observer, The Latest
Motion Picture Outfit for Amateurs, and
more . . . . . . . . . . . . . . . . . . 111--111
Ismar Ginsberg What is Color? . . . . . . . . . . . . . 112--112
Anonymous Ur of the Chaldees: The Birthplace of
Abraham . . . . . . . . . . . . . . . . 113--113
S. R. Winters Uncle Sam's Question-and-Answer Office 114--114
Anonymous For Learning Engine Pressures, The Rivet
Gun and its Role, and more . . . . . . . 115--115
Anonymous A Readable Manual of Seismology . . . . 116--116
Anonymous A Sugar-Coated Dandruff Cure . . . . . . 116--116
Anonymous Internal Secretions and General Biology 116--116
Anonymous Editorials: Our Point of View . . . . . 158--159
Anonymous Inventions New and Interesting . . . . . 187--190
Ismar Ginsberg Service of the Chemist . . . . . . . . . 191--191
Henry Norris Russell The Heavens in September, 1923 . . . . . 192--192
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 193--193
Anonymous Recently Patented Inventions . . . . . . 195--195
Anonymous Electrical Notes . . . . . . . . . . . . 196--196
Anonymous Miscellaneous Notes . . . . . . . . . . 198--198
Anonymous Science Notes . . . . . . . . . . . . . 200--200
Anonymous Patent and Trade-mark Notes . . . . . . 206--206
Anonymous Radio Notes . . . . . . . . . . . . . . 210--210
Anonymous With the Editors . . . . . . . . . . . . 147--147
Edward H. Smith The Inventor and the Gay Gambler . . . . 150--151
Avis Gordon Vestal Camps of the Central Circle . . . . . . 152--153
Austin C. Lescarboura ``A Small Private Laboratory'' . . . . . 154--154
Anonymous Where Sound Waves are Put --- the
Wallace Clement Sabine Laboratory of
Acoustics at Riverbank . . . . . . . . . 155--155
A. G. Ingalls Sprayed Rubber . . . . . . . . . . . . . 156--156
Anonymous Sea-Going Ships for the State Barge
Canal . . . . . . . . . . . . . . . . . 157--157
William A. McGarry Bringing Order Out of Chaos . . . . . . 160--160
Anonymous Converting the Lump of Coal into
Electric Power and Light : New York's
Hell Gate Station, Representing the Last
Word in Generating Practice . . . . . . 161--161
S. R. Winters Sixteen-to-One Automobile Testing . . . 162--162
Anonymous High-Altitude Mountaineering . . . . . . 162--162
Anonymous The Trial Trip of the ``Leviathan'' . . 163--163
Anonymous Dynamiting Bedrock Over a Subway Tunnel
in New York Harbor . . . . . . . . . . . 163--163
J. Malcolm Bird Psychic Adventures at Home . . . . . . . 164--165
Anonymous Some Milestones in the Development of
the Modern Typewriter . . . . . . . . . 165--165
David C. Spencer Keeping the Ash in Motion . . . . . . . 166--166
Anonymous Ventilating an Existing Tunnel, The Use
of Paper in Gardening . . . . . . . . . 167--167
George H. Dacy More Water for Washington . . . . . . . 168--168
Anonymous Protecting a Beach From Erosion by Ice,
Liquid Oxygen as an Explosive . . . . . 169--169
Paul Griswold Howes The Army Ants of British Guiana . . . . 170--171
Anonymous The Wind-Power Automobile . . . . . . . 171--171
Anonymous What Happens When the Tire Hits the Road 172--172
Anonymous The Senses of Insects . . . . . . . . . 172--173
Anonymous The Heating Value of Gas, A Novel
Instrument for Navigators . . . . . . . 173--173
Anonymous Safeguarding the Miner . . . . . . . . . 174--175
Anonymous A Diminutive Electric Tractor,
Industrial Use of Powdered Coal . . . . 175--175
C. O. Ormsbee The Maple Sugar Industry . . . . . . . . 176--176
Anonymous Whole Wheat Bread Without Flour,
Measuring the Drying-Time of Varnish . . 177--177
Anonymous Precision X-Ray Apparatus . . . . . . . 178--178
Anonymous Adrenalin, the Drug of the Hour, The
Life History of a Star . . . . . . . . . 179--179
Anonymous Stretching the Harvest Through the
Winter . . . . . . . . . . . . . . . . . 180--181
Anonymous A Trade that is Passing, Copper
Qualities . . . . . . . . . . . . . . . 181--181
Leo G. Hall Our Reserves of Energy . . . . . . . . . 182--182
Alfred Gradenwitz and
S. R. Winters An Automatic Exposure-Meter, Doing Away
with Dots and Dashes . . . . . . . . . . 183--183
A. A. Hopkins Relics of the 1840's . . . . . . . . . . 184--184
Anonymous Something About Calories . . . . . . . . 184--184
Anonymous A Flexible Clutch for Marine Diesel
Engines, Friendly Germs . . . . . . . . 185--185
Albert Sauveur Making Wrought Iron a New Way . . . . . 186--186
J. B. Johnson The Cathode-Ray Oscillograph . . . . . . 194--194
Anonymous Botanical Notes . . . . . . . . . . . . 202--202
Anonymous Editorials: Our Point of View . . . . . 228--229
Anonymous Inventions New and Interesting . . . . . 259--262
Anonymous The Motor-Driven Commercial Vehicle . . 263--263
Henry Norris Russell The Heavens in October, 1923 . . . . . . 264--264
Anonymous Recently Patented Inventions . . . . . . 265--272
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 273--277
Anonymous Electrical Notes . . . . . . . . . . . . 278--279
Anonymous Radio Notes . . . . . . . . . . . . . . 282--284
Anonymous With the Editors . . . . . . . . . . . . 219--220
Anonymous A Sunken Boulevard for Automobiles . . . 221--222
Edward H. Smith Protecting Our Great Banks . . . . . . . 222--224
L. Lodian Some Curious Comestibles . . . . . . . . 224--226
Alexander Klemin With the Men Who Fly --- I . . . . . . . 226--227
Anonymous Our Abrams Investigation --- I . . . . . 230--231
Anonymous The Six-Meter International Cup Race . . 231--231
Norman G. Meade Practical Criminology at Work . . . . . 232--233
A. G. Ingalls Behind the Underwriters' Label . . . . . 234--235
Anonymous Automobile Race Track on Factory Roof,
The Acid Test for the Eight-Wheel Truck 235--235
Anonymous Electric Welder Vs. Riveter . . . . . . 236--236
Ernst Foerster A Rudder that Turns Itself, Proof of
Einstein's Theory from the Atom . . . . 237--237
J. Malcolm Bird Psychic Adventures on the Continent . . 238--238
H. C. A Waterproof Motor for Lifeboats, A
Veteran Locomotive . . . . . . . . . . . 239--239
George H. Dacy Smashing Dishes to Solve their Secrets 240--240
Anonymous Stucco Investigation . . . . . . . . . . 240--240
Anonymous A Novel Use for Sugar-Cane Waste, A New
Silver Which does not Stain, and more 241--241
Edward C. Crossman Why Armored Suits Fail . . . . . . . . . 242--242
Anonymous A Free Balloon Without Top-Valve . . . . 242--242
Anonymous Sunburned Eyes --- A Film-Studio
Problem, Long-Distance Concerts in
Germany . . . . . . . . . . . . . . . . 243--243
Littell McClung When Water Power Paves the Streets . . . 244--244
Anonymous House-Moving by Ferry, A Machine for
Sowing Seed by Hand, and more . . . . . 245--245
E. Bade Poisonous Plants of the Garden . . . . . 246--246
Anonymous Slipping Railroad Coaches to Save Time,
Use of Kilocycles in Radio, and more . . 247--247
P. J. Risdon The Wembley Park Stadium . . . . . . . . 248--248
Anonymous A Traveling School for Railway Men,
Standardization of Wood Screws . . . . . 249--249
B. B. Borchers When Wood Shrinks . . . . . . . . . . . 250--250
Anonymous New Cadmium-Gallium Lamp . . . . . . . . 250--250
Anonymous The Attack Upon Diabetes . . . . . . . . 251--251
Anonymous Chemistry by Court Order . . . . . . . . 251--251
Anonymous The Lowest Temperature Yet Reached . . . 251--251
Norman M. Stineman Reaching Upward With Concrete . . . . . 252--252
Anonymous The Fact, the Course, and the Causes of
Organic Evolution, Germany Builds New
Super Radio Station . . . . . . . . . . 252--252
Anonymous Waterproofing Cloth by Electrical and
Chemical Action, An Air Washer for the
Automobile . . . . . . . . . . . . . . . 253--253
F. W. Peek, Jr. Make-Believe Lightning . . . . . . . . . 254--254
Anonymous A New and Novel Use for Aluminum . . . . 254--255
D. H. George Radio Without Interference . . . . . . . 255--255
Anonymous The Storage of Oil . . . . . . . . . . . 256--257
W. F. Meggers Measuring with Light Waves . . . . . . . 258--258
Anonymous Travel and Exploration Notes . . . . . . 291--297
Anonymous Editorials: Our Point of View . . . . . 310--311
Anonymous Inventions New and Interesting . . . . . 339--342
Victor W. Page The Motor-Driven Commercial Vehicle . . 343--343
Henry Norris Russell The Heavens in November, 1923 . . . . . 344--344
Anonymous Recently Patented Inventions . . . . . . 345--350
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 352--361
Anonymous Miscellaneous Notes: Miscellaneous . . . 361--362
Ismar Ginsberg The Service of the Chemist . . . . . . . 363--365
Anonymous Radio Notes . . . . . . . . . . . . . . 366--366
Anonymous Electrical Notes . . . . . . . . . . . . 371--371
Anonymous With the Editors . . . . . . . . . . . . 299--299
Edward H. Smith The Drama of Disputed Documents . . . . 302--303
Edgar W. Woolard Earthquakes and Volcanoes . . . . . . . 304--305
Austin C. Lescarboura Our Abrams Investigation --- II . . . . 306--307
Sir Oliver Lodge Within the Atom . . . . . . . . . . . . 308--309
Wm. S. Sims The Father of Our Modern Navy . . . . . 312--312
Albert Gleaves Has Sea Power Passed? . . . . . . . . . 313--314
Anonymous New Lift Bridges on the Jersey Central
Railroad Across Newark Bay . . . . . . . 315--315
Gustave Geley Materialized Hands . . . . . . . . . . . 316--317
William A. McGarry The Animal Hospital . . . . . . . . . . 318--318
Anonymous Squeezing Softwood to Make It Hardwood,
Angelique --- A Wood that Resists the
Attack of the Teredo . . . . . . . . . . 319--319
George H. Dacy Why Headlight Glare? . . . . . . . . . . 320--320
Anonymous A Fool-Proof Recharger for Storage
Batteries, Electric Heat for the
Type-Metal Pot . . . . . . . . . . . . . 321--321
M. Probst Righting a Capsized Ship . . . . . . . . 322--322
Anonymous Something Different in Belt Conveyors,
Directive Radio Transmission on a Wave
Length of 10 Meters, and more . . . . . 323--323
Anonymous Improving Irish Linen, When Our Teeth
are Out of Gear, and more . . . . . . . 324--324
Anonymous A Versatile Motorcraft . . . . . . . . . 324--325
Alexander Klemin With the Men Who Fly --- II . . . . . . 326--327
Anonymous A Delicate Balance, Villa's Buried
Treasure . . . . . . . . . . . . . . . . 327--327
Anonymous Saving a Cathedral by Compressed Air . . 328--328
Anonymous A Photographic Museum . . . . . . . . . 328--328
Anonymous Automobiles and Near-Automobiles,
Forests and Fertility, and more . . . . 329--329
Robert G. Skerrett Ball Bearings and how they are Made . . 330--331
Frank E. Hale Keeping Our Water Fit to Drink . . . . . 332--332
Anonymous A Midget Wind Tunnel that Works Like a
Giant, A 29-Ton Portable Riveter, and
more . . . . . . . . . . . . . . . . . . 333--333
P. J. Risdon Shifting Speeds with an Oil Pump . . . . 334--334
Anonymous Clever Contrivances of the Garage Man, A
Circular Slide-Rule . . . . . . . . . . 335--335
Anonymous Fish as Food and Fertilizer . . . . . . 336--337
Anonymous Feeding the Automobile Engine . . . . . 338--338
Anonymous Editorials: Our Point of View . . . . . 388--389
Henry Norris Russell The Heavens in December, 1923 . . . . . 410--410
Anonymous Inventions New and Interesting . . . . . 414--417
Major Victor W. Page The Motor-Driven Commercial Vehicle . . 418--418
Anonymous Recently Patented Inventions . . . . . . 419--422
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 424--436
Ismar Ginsberg The Service of the Chemist . . . . . . . 438--440
Anonymous With the Editors . . . . . . . . . . . . 379--379
Alfred Gradenwitz A Wheelless Motor-Car . . . . . . . . . 381--381
Anonymous Charles Proteus Steinmetz . . . . . . . 381--381
Edward H. Smith With Fire and Fraud . . . . . . . . . . 382--383
Ismar Ginsberg The Fuel of the Future . . . . . . . . . 384--385
R. M. Sanders Three Wheels Versus Four . . . . . . . . 386--387
Anonymous Gelatine to Eat and Gelatine for Glue,
Trackless Trolley Details, and more . . 387--387
J. Malcolm Bird Another Mediumistic Failure . . . . . . 390--391
Austin C. Lescarboura Our Abrams Investigation --- III . . . . 392--392
Anonymous The Last Harbor of Forgotten Ships . . . 393--393
Anonymous Copenhagen--Bornholm Wireless Telephone
Service . . . . . . . . . . . . . . . . 393--393
J. F. Springer Some Great Dredges . . . . . . . . . . . 394--395
Anonymous The Lifting Lock . . . . . . . . . . . . 395--395
Anonymous Driving the Bomber to High Altitudes . . 396--396
Anonymous All Fixed for a Hard Winter, for the
Hand Screw Machine, and more . . . . . . 397--397
Alfred Gradenwitz Making Sport a Science . . . . . . . . . 398--398
Anonymous A Milling-Machine Dynamometer, Trees and
Climate . . . . . . . . . . . . . . . . 399--399
F. Le Roi Thurmond The Carlsbad Cave . . . . . . . . . . . 400--400
Anonymous Edison's First Incandescent Light . . . 400--400
Anonymous Tested for a Million Volts, A Gasoline
Rail-Car of Power and Stability, and
more . . . . . . . . . . . . . . . . . . 401--401
Leon Augustus Hausman and
Ph. D The ``Horse-Hair Snake'' . . . . . . . . 402--402
Anonymous Where Bridges are Built in the Dead of
Winter, The Largest Swimming Pool for
Ten Thousand Swimmers, and more . . . . 403--403
Anonymous The Science of Distribution . . . . . . 404--404
Anonymous Recording Alternating Current Wave
Forms, Amateur Photomicrography by Means
of a Microscope and Hand Camera, and
more . . . . . . . . . . . . . . . . . . 405--405
Theodore Merrill Fisher Colorado's Six-Mile Tunnel Under the
Rockies . . . . . . . . . . . . . . . . 406--406
Marcus Benjamin Charles Doolittle Walcott, Physiological
Effects of High Temperatures . . . . . . 407--407
John B. C. Kershaw The Air We Breathe . . . . . . . . . . . 408--408
Anonymous Mycenae, the City of Agamemnon, as
Brought to Light by the Archaeologists 409--409
Anonymous Metering Water by the Wholesale, Pulling
Down a Church Steeple With a Motor
Winch, and more . . . . . . . . . . . . 411--411
Anonymous The World's Largest Subaqueous Tunnel 412--413
Anonymous A Permanent . . . . . . . . . . . . . . 413--413
Anonymous Editorials: Our Point of View . . . . . 14--15
Anonymous Inventions New and Interesting . . . . . 37--40
Henry Norris Russell The Heavens in January, 1924 . . . . . . 41--41
Anonymous Recently Patented Inventions . . . . . . 45--49
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 52--67
Anonymous Radio Notes . . . . . . . . . . . . . . 62--63
Anonymous With the Editors . . . . . . . . . . . . 3--3
Anonymous The Story of Steel --- I . . . . . . . . 5--5
Victor W. Page Cars of 1924 . . . . . . . . . . . . . . 6--9
Anonymous The Economic Position of Motor Transport 10--12
S. W. Clatworthy Driving the Motor Car with a Pendulum:
The Latest Surprise of the Ingenious
Inventor Constantinesco of Wave-Power
Fame . . . . . . . . . . . . . . . . . . 13--13
Austin C. Lescarboura Our Abrams Investigation --- IV . . . . 16--17
Scientific American Staff Traffic and the Law . . . . . . . . . . 18--19
J. Malcolm Bird Psychic Adventures at Home . . . . . . . 20--21
Victor W. Page The Future of the Air-Cooled Car . . . . 22--23
Anonymous Floating the Car on Oil . . . . . . . . 24--24
Anonymous Balloon Tires and what they Mean . . . . 25--25
Alexander Klemin With the Men Who Fly --- III . . . . . . 26--27
Anonymous Solving Rapid Transit Congestion by the
Moving Platform, Gassing Peach Borers 29--29
R. R. Belknap Life on Board U.S.S. ``Colorado'' . . . 30--30
Anonymous A Five-Hundred-Year-Old Roof . . . . . . 32--32
Alfred Gradenwitz A New Technique of Anesthesia, Haze and
Mist . . . . . . . . . . . . . . . . . . 33--33
Lloyd Jacquet Electrifying Chile's Railways . . . . . 34--34
Anonymous Science and Blankets, Steel Wheels for
Twentieth-Century Railroads, and more 35--35
John B. C. Kershaw Last Words of Science . . . . . . . . . 36--36
Anonymous Gasoline Cars and Trucks of 1924 . . . . 42--44
Anonymous Editorials: Our Point of View . . . . . 84--85
Henry Norris Russell The Heavens in February, 1924 . . . . . 110--110
Anonymous Inventions New and Interesting . . . . . 111--114
Anonymous Recently Patented Inventions . . . . . . 116--121
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 122--132
Ismar Ginsberg Service of the Chemist . . . . . . . . . 132--132
Anonymous Radio Notes . . . . . . . . . . . . . . 136--137
Anonymous The Oldest Eggs in the World . . . . . . 77--77
Edward H. Smith The Romance of the Lock . . . . . . . . 78--79
Anonymous Power from Mercury Vapor . . . . . . . . 80--81
Anonymous Our First Rigid Airship the
``Shenandoah'' . . . . . . . . . . . . . 82--83
J. Malcolm Bird Our Psychic Investigation Advances . . . 86--86
Austin C. Lescarboura Our Abrams Investigation --- V . . . . . 87--87
Anonymous What is Sleep? . . . . . . . . . . . . . 88--88
Anonymous How Hafnium was Discovered . . . . . . . 88--88
Anonymous A Corkscrew Railway . . . . . . . . . . 89--89
A. G. Ingalls Remolding Our Civic Clay . . . . . . . . 90--91
Anonymous A Motor that Solves the Power-Factor
Problem . . . . . . . . . . . . . . . . 91--91
Anonymous Making Plants Work Overtime by Means of
Electric Light . . . . . . . . . . . . . 91--91
Illustrated London News Animal Sculpture of 25,000 Years Ago . . 92--92
Anonymous The Size of the Universe . . . . . . . . 92--92
Anonymous The Twin Trails Highway . . . . . . . . 93--93
Anonymous Suspending the Motor Car Body on Air . . 93--93
Anonymous Driving Locomotives with a Charge of
Steam . . . . . . . . . . . . . . . . . 93--93
Anonymous Head-Hunting in Papua . . . . . . . . . 93--93
Anonymous High Explosives that will not Freeze . . 94--94
Anonymous London Fogs . . . . . . . . . . . . . . 94--94
Anonymous Exit the Pullman Car Hammock . . . . . . 95--95
Anonymous Stage Scenery on the Building Block
Principle . . . . . . . . . . . . . . . 95--95
Anonymous Recent Aeronautic Investigations . . . . 95--95
Anonymous Einstein and the Recent Eclipse . . . . 95--95
Scientific American Staff One Law Versus Forty-Eight . . . . . . . 96--96
Frank Hurley The Head Hunters of New Guinea . . . . . 97--97
Otto Wilson The Heat of the Earth . . . . . . . . . 98--98
Anonymous Flivvers of the Air that Approach 100
Miles Per Gallon . . . . . . . . . . . . 99--99
Anonymous Lichens --- Impossible Plants . . . . . 99--99
Anonymous Lessons of the Japanese Earthquake . . . 100--100
Anonymous The Continuous-Traffic Lift Bridge . . . 101--101
Anonymous Bad Coal Ruins Family Wash . . . . . . . 101--101
Anonymous Ninety-Eight Tons of Steel in One Piece 101--101
Anonymous Cutting a Traffic Tangle with a
\$20,000,000 Bridge . . . . . . . . . . 101--101
Anonymous Dog Distemper . . . . . . . . . . . . . 101--101
A. A. Hopkins A Museum in the Open Air . . . . . . . . 102--102
Anonymous Educating Workmen to Accident Prevention 102--102
Anonymous The Pasteurization of Milk . . . . . . . 103--103
Anonymous Motor-Driven ``Big Wheels'' . . . . . . 103--103
Anonymous A Caterpillar Sprocket Wheel With
Removable Teeth . . . . . . . . . . . . 103--103
Anonymous Gliders . . . . . . . . . . . . . . . . 103--103
Anonymous Machine for Determining the Psychology
of Color . . . . . . . . . . . . . . . . 103--103
Anonymous The Blue Ribbon of the Atlantic . . . . 104--104
Anonymous A Hack-Saw Blade that Improves with Age 105--105
Anonymous Doubling the Field of Vision of the
Movies . . . . . . . . . . . . . . . . . 105--105
Anonymous Seeking A Non-Destructive Method for
Testing Wire Rope . . . . . . . . . . . 105--105
Anonymous Truck News from Abroad . . . . . . . . . 105--105
J. Hammond Smith With Camera and Chisel . . . . . . . . . 106--106
Anonymous A Giant Among Airplanes . . . . . . . . 107--107
Anonymous Sulfur Corrosion . . . . . . . . . . . . 107--107
Anonymous A Device that Takes Care of Worn Brake
Linings and Shoes . . . . . . . . . . . 107--107
Anonymous Why Watch Springs Break . . . . . . . . 107--107
Anonymous The Story of Steel --- II . . . . . . . 108--109
Anonymous Editorials: Our Point of View . . . . . 156--156
Henry Norris Russell The Heavens in March, 1924 . . . . . . . 176--176
Anonymous Inventions New and Interesting . . . . . 181--185
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 186--199
Ismar Ginsberg Service of the Chemist . . . . . . . . . 200--203
Anonymous Radio Notes . . . . . . . . . . . . . . 204--205
Anonymous Electrical Notes . . . . . . . . . . . . 206--206
Anonymous Science Notes . . . . . . . . . . . . . 208--208
Anonymous Keeping Open Our Harbor Channels . . . . 149--149
James H. Collins Necessity Mothers the Fisherman . . . . 150--151
Anonymous Arctic Exploration by Aircraft . . . . . 152--153
Edward C. Crossman Gun Catastrophes . . . . . . . . . . . . 154--155
Anonymous Here and There . . . . . . . . . . . . . 157--157
Anonymous A Wild Night on the ``Shenandoah'' . . . 158--158
Austin C. Lescarboura Our Abrams Investigation --- VI . . . . 159--159
J. Malcolm Bird ``Thirty Years of Psychic Research'' . . 160--160
Ivan E. Houk When Beavers Aid Irrigation . . . . . . 161--161
Anonymous Elasticity and High Speeds . . . . . . . 161--161
Anonymous The Story of Steel --- III . . . . . . . 162--164
Anonymous A Hydroelectric Giant . . . . . . . . . 164--164
Anonymous Does Land Lie Near the Pole? . . . . . . 164--165
P. J. Risdon When a Second Seems an Age . . . . . . . 166--166
Anonymous New Ways to Use Slate, Molybdenum and
its Applications . . . . . . . . . . . . 167--167
Ismar Ginsberg More Steam-Engine Power Without Steam 168--168
Anonymous Making the Photoplay Unreal . . . . . . 169--169
A. G. Ingalls The Gelatine You Eat . . . . . . . . . . 170--170
Anonymous Relativity and Modern Physics . . . . . 170--170
Anonymous The Continuous-Motion Clock that does
not Tick, To Measure the Stopping Power
of Automobile Brakes . . . . . . . . . . 171--171
Anonymous The Problem of Mine Fires . . . . . . . 172--172
Anonymous Civilization and the Microbe . . . . . . 172--172
Anonymous Uncle Sam's Daily Market Basket . . . . 173--173
R. E. Livingston Harnessing Arkansas Water-Power . . . . 174--174
Anonymous The Size of Stars, Novel Gadget for the
House-Painter, and more . . . . . . . . 175--175
Anonymous Moving Houses One-Third of a Mile on
Narrow-Gage Tracks, The ``Chemical''
Sense, and more . . . . . . . . . . . . 177--177
Anonymous The Engine as a Brake . . . . . . . . . 178--178
Anonymous Uncommon Views of Common Insects . . . . 179--179
Guy E. Mitchell Laying the Ghost of a War-Time Trouble 180--180
Anonymous Editorials: Our Point of View . . . . . 230--230
Henry Norris Russell The Heavens in April, 1924 . . . . . . . 260--260
Anonymous Recently Patented Inventions . . . . . . 261--264
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 266--276
Ismar Ginsberg Service of the Chemist . . . . . . . . . 283--283
Anonymous Radio Notes . . . . . . . . . . . . . . 284--286
Anonymous With the Editors . . . . . . . . . . . . 219--219
J. Bernard Walker The Mooring Mast is the Thing . . . . . 221--221
Lieut. Corley P. McDarment Flying Around the World . . . . . . . . 222--223
Anonymous Teapot Dome . . . . . . . . . . . . . . 224--226
Guy E. Mitchell Running the Rapids of the Grand Canyon 226--227
Albert A. Hopkins A Theater Without a Stage . . . . . . . 228--229
Anonymous Here and There . . . . . . . . . . . . . 231--231
Scientific American Staff Untangling Our Automobile Laws . . . . . 232--232
Juanita W. Porter Houses of Mud . . . . . . . . . . . . . 233--233
Anonymous A Static or Dynamic Atom? . . . . . . . 233--233
Anonymous The Story of Steel --- IV . . . . . . . 234--234
Anonymous Water from Gasoline in Airships . . . . 234--235
J. Malcolm Bird Our Psychic Investigation . . . . . . . 236--236
Anonymous A Telescope of Record Dimensions,
Shrouding the Propeller, and more . . . 237--237
Anonymous Largest and Fastest of the Zeppelins . . 238--239
Anonymous The Food of Corals, Filter-Passers:
Living Beings Smaller Than Bacteria . . 239--239
Austin C. Lescarboura Our Abrams Investigation --- VII . . . . 240--240
Anonymous From Log to Paper: A Brief Visit to a
Great Newsprint Mill in Canada . . . . . 241--241
Charles W. Geiger Saving Dollars by Salving Scrap . . . . 242--242
Anonymous Ball Lightning . . . . . . . . . . . . . 242--242
Anonymous Shipping Milk in Carload Lots, Log Rafts
in the Open Ocean, and more . . . . . . 243--243
Anonymous Little Fishes and Big Oil Pools . . . . 244--244
Anonymous How Gold Leaf is Made . . . . . . . . . 244--244
Anonymous Machines and Methods Used in the
Manufacture of the Fabric Tire . . . . . 245--245
Harry A. Mount The Next Great Flood --- Where? . . . . 246--246
Anonymous Flowers that Dislike Music . . . . . . . 246--246
Anonymous Does Steel Melt from the Inside?,
Storing Gasoline Under Pressure, and
more . . . . . . . . . . . . . . . . . . 247--247
Albert Neuburger Checkmating the Moth . . . . . . . . . . 248--249
Anonymous Water-Jet Propulsion, Old Egyptian
Water-Clocks, and more . . . . . . . . . 249--249
Howard F. Weiss Man-Made Lumber . . . . . . . . . . . . 250--250
Anonymous Machine-Gunning Auto Bandits, Certain
Gear-Shifting With a Foot-Loose
Gear-Box, and more . . . . . . . . . . . 251--251
Anonymous Bombing the Battleship . . . . . . . . . 252--252
Anonymous Inventions New and Interesting . . . . . 253--258
Anonymous The Wandering Rifle Bullet . . . . . . . 259--259
Anonymous Sulfur and its Many Uses . . . . . . . . 259--259
Anonymous Editorials: Our Point of View . . . . . 308--308
Anonymous Inventions New and Interesting . . . . . 333--336
Henry Norris Russell The Heavens in May, 1924 . . . . . . . . 337--337
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 340--340
Anonymous Radio Notes . . . . . . . . . . . . . . 356--357
Ismar Ginsberg Service of the Chemist . . . . . . . . . 363--364
Anonymous With the Editors . . . . . . . . . . . . 299--299
Austin C. Lescarboura and
Mem. Aiee ``This is Station'' . . . . . . . . . . 302--303
Alfred Gradenwitz Experimental Telepathy . . . . . . . . . 304--305
Oliver Lodge Putting the Atom to Work . . . . . . . . 306--307
Anonymous Here and There . . . . . . . . . . . . . 309--309
Anonymous The Story of Steel --- V . . . . . . . . 310--311
The Scientific American Staff When, Where, Why? . . . . . . . . . . . 312--312
Austin C. Lescarboura Our Abrams Investigation --- VIII . . . 313--313
H. D. Tiemann Does Paint Preserve Wood? . . . . . . . 314--315
Anonymous A New Trade, the Straightener? . . . . . 315--315
A. G. Ingalls Exploring Within the Steel . . . . . . . 316--317
Anonymous The Grocery on Wheels . . . . . . . . . 318--318
Anonymous Washington Memorial Bridge at
Wilmington, Human Behavior and Reflexes,
and more . . . . . . . . . . . . . . . . 319--319
Anonymous Post-Treaty Standing of the World's
Navies . . . . . . . . . . . . . . . . . 320--320
Anonymous Our Latest Battleship --- The
``Colorado'' . . . . . . . . . . . . . . 320--321
Arthur L. Dahl Insular Irrigation . . . . . . . . . . . 322--322
Anonymous The Sense of Time . . . . . . . . . . . 322--322
Anonymous Translating Stresses Into Color for
Visual Observation, Vision and Man's
Mental Powers, and more . . . . . . . . 323--323
Francis A. Westbrook Making High-Tension Cables . . . . . . . 324--325
M. Luckiesh For Faster Seeing . . . . . . . . . . . 326--326
Anonymous Ammonia from the Air . . . . . . . . . . 326--326
C. A. Oldroyd Speeding Up the Water Turbine, A Movie
``Mayflower'' of Steel, and ore . . . . 327--327
S. F. Aaron Animal Animosities . . . . . . . . . . . 328--328
Anonymous Rotary Car-Dumping on a Giant Scale,
Determining the Fire Hazards in a
Forest, and more . . . . . . . . . . . . 329--329
Anonymous A scheme to salvage lost ideas, Saving
Pulley-Power with Cardboard Disks . . . 330--330
Anonymous The Lore of the Archaeologist . . . . . 331--331
William Alphonso Murrill Truffles and Truffle Hunters . . . . . . 332--332
Anonymous Editorials: Our Point of View . . . . . 380--380
Anonymous Inventions New and Interesting . . . . . 405--409
Henry Norris Russell The Heavens in June, 1924 . . . . . . . 410--410
Anonymous Recently Patented Inventions . . . . . . 411--412
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 414--420
Anonymous Radio Notes . . . . . . . . . . . . . . 430--432
Anonymous With the Editors . . . . . . . . . . . . 371--371
Anonymous The Family Tree of Coal Tar . . . . . . 373--373
Oliver Lodge Inside the Earth, and Out . . . . . . . 374--375
Anonymous Photographs of the Inner Body . . . . . 375--375
Edward H. Smith The Criminal as an Inventor . . . . . . 376--377
James H. Collins Taking the Stenches Out of Industry . . 378--379
Anonymous Here and There . . . . . . . . . . . . . 381--381
J. Malcolm Bird Telepathy and Radio . . . . . . . . . . 382--382
Austin C. Lescarboura Our Abrams Investigation --- IX . . . . 383--383
Anonymous Getting Together on the Traffic Problem 384--384
S. W. Clatworthy The Locomotive of the Future . . . . . . 385--385
H. E. Davis The Blast Factory . . . . . . . . . . . 386--386
Anonymous Railway Ties of Concrete for India's
Railways, Disappearing Searchlight
Towers, and more . . . . . . . . . . . . 387--387
J. F. Springer Studying Fire Risks from Sample Fires 388--388
Anonymous Torpedo Attack by Airplane, Ferry Boats
with Turbo-Electric Drive . . . . . . . 389--389
Ismar Ginsberg Coal and Coal Tar . . . . . . . . . . . 390--390
Anonymous Color in Nature . . . . . . . . . . . . 390--390
Anonymous Sydney Harbor Bridge . . . . . . . . . . 391--391
James H. Collins Fighting the Bed Bug . . . . . . . . . . 392--392
Anonymous A Gasoline Engine that is Different,
Electric Light Extremes, and more . . . 393--393
H. H. Dunn The Largest Map in the World . . . . . . 394--394
Anonymous The Rotary System of Oil-Well Drilling 394--394
Anonymous A New Portable Microscope for Use in the
Shop, An Old Canal Put to Use, and more 395--395
Anonymous The Story of Steel --- VI . . . . . . . 396--397
Leon Augustus Hausman Birds and Sewage Disposal . . . . . . . 398--398
Anonymous Fighting Forest Fires with Radio and
Plane, Psychology and Criminal
Responsibility, and more . . . . . . . . 399--399
Anonymous Uncle Sam's High-Priced School, The War
Department Radio Net . . . . . . . . . . 400--400
Anonymous Safety of Life and Limb . . . . . . . . 401--401
M. Luckiesh The Sky by Day . . . . . . . . . . . . . 402--402
Anonymous New Ideas of Prehistoric Flora, A Tree
with Engineering Judgment, and more . . 403--403
D. S. Olson Snowslides . . . . . . . . . . . . . . . 404--404
Anonymous Is Snowfall Decreasing? . . . . . . . . 404--404
Anonymous Editorials: Our Point of View . . . . . 12--12
Anonymous Inventions New and Interesting . . . . . 37--42
Henry Norris Russell The Heavens in July, 1924 . . . . . . . 43--43
Anonymous Recently Patented Inventions . . . . . . 46--49
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 50--58
Anonymous Radio Notes . . . . . . . . . . . . . . 66--68
Anonymous With the Editors . . . . . . . . . . . . 3--3
Anonymous A New Miracle Mineral . . . . . . . . . 6--7
Austin C. Lescarboura Cross-Examining the Automobile . . . . . 8--9
Daniel Moreau Barringer Volcanoes --- Or Cosmic Shell-Holes? . . 10--11
Anonymous Here and There . . . . . . . . . . . . . 13--13
Charles W. Stokes With the ``Limited'' . . . . . . . . . . 14--14
Anonymous The Problem of the Obelisk . . . . . . . 15--15
Austin C. Lescarboura Our Abrams Investigation --- X . . . . . 16--16
Anonymous A Still Larger Power Plant . . . . . . . 17--18
Anonymous Camping and Sporting Novelties . . . . . 18--19
Anonymous Repairing the ``Shenandoah'' . . . . . . 20--20
Anonymous Is Tire Retreading a Failure?, Packing
Paste in Tubes, and more . . . . . . . . 21--21
O. M. Kile Crop Reporting by Airplane . . . . . . . 22--23
Anonymous Australian Power Projects, Fighting
Senility . . . . . . . . . . . . . . . . 23--23
Harry Burton King Tut-Ankh-Amen's Treasure . . . . . 24--24
Anonymous A Novel Irrigation Sprayer, The Railroad
Track Highway, and more . . . . . . . . 25--25
Walter S. Timmis More Heat From the Pound of Coal . . . . 26--26
Anonymous Vegetables for the Flower Garden . . . . 27--27
J. Malcolm Bird Our Next Psychic . . . . . . . . . . . . 28--29
Anonymous Wichita Dam . . . . . . . . . . . . . . 30--30
Anonymous Effect of Manganese on Plant Growth . . 30--30
Anonymous Diesel-Driven Stern-Wheel Boat, Local
Immunity in Infectious Diseases . . . . 31--31
Anonymous The Great Lakes --- St. Lawrence
Deep-Sea Route . . . . . . . . . . . . . 32--32
Anonymous Bringing Color Photography Down to the
Layman, Social Significance of the Army
Intelligence Tests . . . . . . . . . . . 33--33
Anonymous A British Bureau of Standards, Applying
the Yardstick to Radio Waves . . . . . . 34--34
S. F. Aaron The Earliest Engineers . . . . . . . . . 36--36
Anonymous What Happens in the Lime Cycle?, What
Happens When Leather is Tanned?, and
more . . . . . . . . . . . . . . . . . . 44--44
Anonymous Self-Igniting Water Lights, Some Forces
in Social Evolution . . . . . . . . . . 45--45
Anonymous Editorials: Our Point of View . . . . . 84--84
Anonymous Inventions New and Interesting . . . . . 109--114
Ismar Ginsberg The Service of the Chemist . . . . . . . 119--119
Henry Norris Russell and
Ph. D The Heavens in August, 1924 . . . . . . 122--122
Anonymous Our Readers' Point of View . . . . . . . 123--123
Anonymous Recently Patented Inventions . . . . . . 124--127
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 128--131
Anonymous Radio Notes . . . . . . . . . . . . . . 134--135
J. Malcolm Bird On the Road . . . . . . . . . . . . . . 77--79
J. B. C. Kershaw The British Empire Exhibition . . . . . 80--81
Herbert Janvrin Browne Long-Range Weather Forecasting . . . . . 82--83
Anonymous Portraits of Columbus . . . . . . . . . 83--83
Anonymous Here and There . . . . . . . . . . . . . 85--85
James H. Collins Growing Our Own Bananas . . . . . . . . 86--86
Anonymous Telephoning Our Press Photographs . . . 87--87
J. Malcolm Bird The ``Margery'' Mediumship --- I . . . . 88--89
Anonymous Making a Monument Out of a Mountain . . 90--90
Anonymous A Car for Examining Tunnels, Handling
Lumber in a Hurry, and more . . . . . . 91--91
Anonymous The British--American Cup Contest . . . 92--92
Anonymous Motion Pictures of Atoms . . . . . . . . 92--92
Anonymous The Oil-Electric Locomotive, The Kinetic
Atom, and more . . . . . . . . . . . . . 93--93
Anonymous A Landing-Field that Goes to Sea . . . . 94--94
Anonymous Modern Medicine and the Tropics . . . . 94--94
Austin C. Lescarboura Our Abrams Investigation --- XI . . . . 96--96
Anonymous Bear Mountain Hudson River Bridge, The
Utilization of Volcanic Steam in Italy,
and more . . . . . . . . . . . . . . . . 97--97
Anonymous The Story of Steel --- VII . . . . . . . 98--99
Anonymous The Assault on Mount Everest . . . . . . 100--100
Anonymous The Culture of Tissues Outside the Body 100--100
Anonymous A Super-Industrious Brick-Making
Machine, Making Castings-Without Sand 101--101
Daniel Moreau Barringer Volcanoes or Cosmic Shell-Holes? --- II 102--102
Anonymous Dummy Airplanes as an Aid to
Aeronautical Designing, A Library of
Sand, and more . . . . . . . . . . . . . 103--103
J. F. Springer Coal Piles that Light Themselves . . . . 104--104
Anonymous From Cocoa and Sugar to Bon Bons: Candy
in the Making . . . . . . . . . . . . . 105--105
S. F. Aaron The Wars of Ants . . . . . . . . . . . . 106--106
Anonymous Taking the Period Out of the Automobile
Engine, Putting the Tire Inside the
Wheel . . . . . . . . . . . . . . . . . 107--107
Robt. W. A. Brewer What Happens to the Engine Oil? . . . . 108--108
Anonymous Spores in the Upper Air . . . . . . . . 108--108
Ismar Ginsberg New Uses for Rubber Milk . . . . . . . . 108--108
Anonymous The Transatlantic Voyage of ``ZR-III'' 115--115
Karl Fenning A Neglected Well of Information . . . . 116--116
Anonymous Our Radio Page . . . . . . . . . . . . . 117--117
Anonymous The Sugars --- What are They?, Textile
Fibers --- How to Tell them Apart, and
more . . . . . . . . . . . . . . . . . . 118--118
Haviland Hull Platt Atmospheric Heat as a Source of Power 120--120
Guy Otis Brewster Muscular Action in Work and Play . . . . 121--121
Anonymous Editorials: Our Point of View . . . . . 156--156
Anonymous Inventions New and Interesting . . . . . 181--186
Henry Norris Russell The Heavens in September, 1924 . . . . . 187--187
Ismar Ginsberg The Service of the Chemist . . . . . . . 189--189
Anonymous Recently Patented Inventions . . . . . . 190--192
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 194--196
Anonymous Radio Notes . . . . . . . . . . . . . . 216--217
Anonymous With the Editors . . . . . . . . . . . . 147--147
Anonymous Super-Streets and Subways . . . . . . . 149--149
Anonymous The West Point Military Academy . . . . 150--151
Edward C. Crossman Tabbing the Speeding Bullet . . . . . . 152--153
Anonymous The Spellbinding Kilowatt . . . . . . . 154--154
Anonymous Serving 2200 Dinners at One Time . . . . 155--155
Anonymous Here and There . . . . . . . . . . . . . 157--157
Austin C. Lescarboura Our Abrams Verdict . . . . . . . . . . . 158--160
Anonymous How London is Putting its Mail-Carrying
Facilities Underground, Out of the Way
of Traffic, in Automatically Operated
Subways . . . . . . . . . . . . . . . . 161--161
Ismar Ginsberg Pulp and Paper . . . . . . . . . . . . . 162--163
W. J. Purcell Re-Broadcasting the Broadcast Program 164--164
Anonymous Acoustics and Plaster, A New Principle
in Concrete Work . . . . . . . . . . . . 165--165
L. Lodian What the Other Half Eats . . . . . . . . 166--167
Anonymous Face to Face with Vitamin D, Meteorites 167--167
J. B. C. Kershaw The British Empire Exhibition --- II . . 168--168
Anonymous From Raw Cotton and Silver Bullion to
Your Snapshot . . . . . . . . . . . . . 169--169
S. R. Winters Speeding Up the Sluggish Cables . . . . 170--170
Anonymous Camera to Photograph Cylindrical
Surfaces, Scoring Ice by Machine, and
more . . . . . . . . . . . . . . . . . . 171--171
Nauticus Giant Submarines . . . . . . . . . . . . 172--172
Anonymous California's Foot-and-Mouth Quarantine,
Making the Sun Help the Microscope, and
more . . . . . . . . . . . . . . . . . . 173--173
Anonymous The Story of Steel --- VIII . . . . . . 174--175
Anonymous The Battleship ``Mississippi'' Disaster 176--176
Anonymous An Advance in Trench-Digging Machinery,
A Giant Among Vertical Spillways . . . . 177--177
Harold P. Brown Saving a Rotting Concrete Bridge . . . . 178--178
Anonymous Taking the Ear-Phones Off the Waiting
Radio Man, Glow-Light Protection Against
Lightning, and more . . . . . . . . . . 179--179
Donald K. Tressler Jewelry from Fish Scales . . . . . . . . 180--180
Anonymous How Metals are Etched, A Soap Free from
Lye . . . . . . . . . . . . . . . . . . 188--188
Anonymous Editorials: Our Point of View . . . . . 238--238
Anonymous Inventions New and Interesting . . . . . 261--265
Henry Norris Russell The Heavens in October, 1924 . . . . . . 267--267
Anonymous Recently Patented Inventions . . . . . . 268--269
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 270--285
Anonymous Radio Notes . . . . . . . . . . . . . . 286--289
Anonymous With the Editors . . . . . . . . . . . . 227--227
Anonymous South Kearny, N.J., The Latest of the
Great Steam-Electric Power Stations . . 229--230
Lieutenant Corley P. McDarment Around the World by Air . . . . . . . . 230--232
J. Malcolm Bird Our Psychic Investigation . . . . . . . 233--234
E. W. Rice, Jr. Research and Power . . . . . . . . . . . 234--235
George C. Kelcey Traffic Problems of the Large City . . . 236--237
Anonymous Here and There . . . . . . . . . . . . . 239--239
F. A. Rowlinson The Failure of Metals by Fatigue . . . . 240--240
S. W. Clatworthy Syrian Tomb, Antedating that of the
Egyptian King, Tutankhamen, Revealed to
the Archaeologist by an Accidental Rock
Fall [See Facing Page] . . . . . . . . . 241--241
Hamilton M. Wright What the Shoe Reveals About the Foot . . 242--242
Anonymous Bugs Which Will not Take Poison . . . . 242--242
Anonymous A Continuous Depth Indicator for Ships,
Watch Jewels, and more . . . . . . . . . 243--243
Anonymous Turning the Wheels of the Railroad:
Steam Locomotives . . . . . . . . . . . 244--245
Ernest Bade Bringing the Carboniferous Period into
the Greenhouse . . . . . . . . . . . . . 246--246
Anonymous Noiseless Pavements of Long-Lived
Rubber, External Water-Curtain for
Skyscraper Protection . . . . . . . . . 247--247
Nauticus The Airplane Carrier ``Hermes'' . . . . 248--249
Anonymous Consonants and the Telephone, The Latest
and Largest Floating Crane, and more . . 249--249
Oliver S. Arata Cahokia . . . . . . . . . . . . . . . . 250--250
Anonymous Energy Waste in Nature and Household,
The Thyroid Gland . . . . . . . . . . . 250--250
Anonymous The Metamorphosis of the Farm Tractor,
X-Ray Photographs of Mummies, and more 251--251
Anonymous The Story of Steel --- IX . . . . . . . 252--253
J. B. C. Kershaw The British Empire Exhibition --- III 254--254
Anonymous Flax Barriers to Check Drifting Sand,
``Two Star'' Method of Position Finding,
and more . . . . . . . . . . . . . . . . 255--255
Anonymous Seeing Without Eyes . . . . . . . . . . 256--256
Anonymous Ferments and their Work in the Organism 256--256
Anonymous Preparing Baby's Milk: How Milk is
Pasteurized on a Huge Scale With a
Minimum of Labor . . . . . . . . . . . . 257--257
Anonymous Something New in Bridge Design . . . . . 258--258
Anonymous Keeping the Crankcase Oil Pure, Firing a
Locomotive with Milk, and more . . . . . 259--259
Anonymous A Study in Feminine Invention . . . . . 260--260
Austin C. Lescarboura Our Radio Page . . . . . . . . . . . . . 266--266
Anonymous Editorials: Our Point of View . . . . . 308--308
Anonymous Inventions New and Interesting . . . . . 331--335
Henry Norris Russell The Heavens in November, 1924 . . . . . 337--337
Anonymous Recently Patented Inventions . . . . . . 338--340
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 342--348
Anonymous Civil Engineering Notes . . . . . . . . 351--363
Anonymous Radio Notes . . . . . . . . . . . . . . 368--373
Anonymous With the Editors . . . . . . . . . . . . 299--299
Paul V. Winslow Helping Deafness by Nerve Stimulation 301--303
E. E. Free Our Psychic Investigation . . . . . . . 304--304
Nicholas P. Rashevsky The Possibility of Other Kinds of Space 305--307
Anonymous Here and There . . . . . . . . . . . . . 309--309
Frederic M. Delano, Jr. Listening to the Stars . . . . . . . . . 310--311
Anonymous Help Us Study the Solar Eclipse . . . . 312--312
Anonymous Behind the Curtain of a Great Theater
--- Some of the Things the Audience
Never Sees . . . . . . . . . . . . . . . 313--313
H. C. Dinger Our Post-War Navy . . . . . . . . . . . 314--315
Anonymous Six-Meter Team Race . . . . . . . . . . 316--317
Anonymous Precious Stones in Plants, Lubricating
the Flanges of Locomotive Wheels, and
more . . . . . . . . . . . . . . . . . . 317--317
Arthur L. Collins Putting Heat in the Bank . . . . . . . . 318--318
Anonymous Making Cord-Tire Fabric by One of the
New Web-Cord Processes . . . . . . . . . 319--319
Anonymous Development of the American Submarine 320--321
Anonymous Temperature Variations in Plants, An
Electrical Jack-of-All-Trades . . . . . 321--321
Ralph Howard Microscopic Vegetable Growing . . . . . 322--323
Anonymous Two Pecks of Sugar from One Bushel of
Corn . . . . . . . . . . . . . . . . . . 323--323
Anonymous The Story of Steel --- X . . . . . . . . 324--325
Anonymous Methods of Evolution . . . . . . . . . . 325--325
Anonymous The Gasoline-Electric Bus . . . . . . . 326--326
Anonymous The Punch Press, The World's Most
Dangerous Tool, And how it is Robbed$
\cdot $ of its Menace in the Up-To-Date
Factory . . . . . . . . . . . . . . . . 327--327
Ismar Ginsberg Charcoal, The Chemical Truant Officer 328--328
Ernest Bade When the Leaves Begin to Fall, The
Physics of Snow . . . . . . . . . . . . 329--329
Anonymous Living Catalysts . . . . . . . . . . . . 330--330
Anonymous The Whys of Paper and Ink . . . . . . . 330--330
Anonymous Gases in Industry and Home . . . . . . . 330--330
Anonymous Our Radio Page . . . . . . . . . . . . . 336--336
Anonymous Casein and its Products . . . . . . . . 364--367
Albert A. Hopkins Inventions New and Interesting . . . . . 405--409
Henry Norris Russell The Heavens in December, 1924 . . . . . 410--410
Anonymous Recently Patented Inventions . . . . . . 411--416
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 416--420
Anonymous Radio Notes . . . . . . . . . . . . . . 434--438
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 438--440
Anonymous Science Notes: Science Notes the Present
Status of Fruit and Vegetable
Dehydration . . . . . . . . . . . . . . 443--446
Anonymous Index to Volume 131 . . . . . . . . . . 447--450
Anonymous With the Editors . . . . . . . . . . . . 379--379
Douglas Stanley and
H. H. Sheldon Scientific Tests for Good and Bad
Singers . . . . . . . . . . . . . . . . 381--383
Walter Franklin Prince Experiences Which I Cannot Explain Away 384--386
Anonymous How Important is the Discovery of the
Lost City of Leptis Magna? . . . . . . . 387--387
Anonymous An Editorial and Two Announcements . . . 388--388
Anonymous Why we are Trying to Make Gold . . . . . 389--389
Anonymous Our Radio Page . . . . . . . . . . . . . 390--390
Frederic M. Delano Radio Vacuum Tubes that You Can Take
Apart . . . . . . . . . . . . . . . . . 391--391
Anonymous A Costly Dump Heap . . . . . . . . . . . 392--392
Edward H. Smith The Latest Developments in Bank Burglary 393--395
Anonymous Is the End of Our Power Resources in
Sight? . . . . . . . . . . . . . . . . . 396--396
Anonymous This Great Tunnel, Forty-four Feet in
Diameter, Will be the Largest in
Existence . . . . . . . . . . . . . . . 397--397
Anonymous The Story of Steel --- XI . . . . . . . 398--399
Nicolas P. Rashevsky Is Time the Fourth Dimension? . . . . . 400--402
Leon Augustus Hausman The Basis of Aquatic Life . . . . . . . 403--404
Anonymous Attacking Malaria With Airplanes . . . . 404--404
Anonymous Letters from Our Readers . . . . . . . . 441--443
Albert A. Hopkins Inventions New and Interesting . . . . . 34--38
Anonymous Recently Patented Inventions . . . . . . 39--40
Anonymous \booktitleScientific American Digest:
The \booktitleScientific American Digest 46--51
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 52--53
Henry Norris Russell The Heavens in January . . . . . . . . . 53--53
Alexander Klemin Learning to Use Our Wings . . . . . . . 54--56
Austin C. Lescarboura Radio Notes . . . . . . . . . . . . . . 58--61
H. W. Slauson What Should we Expect of Tomorrow's
Motor Car Developments? . . . . . . . . 5--8
Anonymous Mt. Shasta's Mighty River of Mud . . . . 9--9
R. L. Duffus What Causes and What Cures Fatigue? . . 10--11
Anonymous Famous German Sail-less Ship Driven by
Same Wind Forces that Make Base Ball
Curve . . . . . . . . . . . . . . . . . 12--12
Henry Norris Russell Do not Miss Seeing the Solar Eclipse . . 13--13
Ernest W. Brown Eclipse Investigations not Requiring
Special Equipment . . . . . . . . . . . 14--15
Anonymous Our Own Radio Investigation . . . . . . 16--16
Paul D. Hugon Mountains Made to Order . . . . . . . . 17--17
Alexander Klemin Can Huge Dirigibles Supplant Our Ocean
Liners? . . . . . . . . . . . . . . . . 18--21
Anonymous Common Accidents Easy to Avoid . . . . . 22--22
Anonymous New Bridge Saves Time . . . . . . . . . 23--23
Uthai Vincent Wilcox A New Niagara of Subterranean Power . . 24--25
Harold J. Shepstone A Race with Nature . . . . . . . . . . . 26--27
H. S. McCauley Methods of Testing Chauffeurs . . . . . 28--28
L. R. G. Crandon The Psychic Investigation . . . . . . . 29--29
Nicolas P. Rashevsky The Size of the Universe . . . . . . . . 30--31
S. F. Aaron Jewels in the Eyes of Insects . . . . . 32--33
Anonymous Which Radio Set to Buy . . . . . . . . . 41--44
Anonymous Eclipse Coupon . . . . . . . . . . . . . 61--61
Anonymous The \booktitleScientific American Annual
Automobile Guide . . . . . . . . . . . . 68--71
Anonymous Editorials: Our Point of View . . . . . 84--84
Albert A. Hopkins Inventions New and Interesting . . . . . 105--110
Anonymous Recently Patented Inventions . . . . . . 111--112
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 114--122
Alexander Klemin Learning to Use Our Wings . . . . . . . 123--128
Henry Norris Russell The Heavens in February . . . . . . . . 129--130
Austin C. Lescarboura Radio Notes . . . . . . . . . . . . . . 132--136
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 137--140
Anonymous Science Notes . . . . . . . . . . . . . 140--144
Albert A. Hopkins Which Races are Best? . . . . . . . . . 77--79
Anonymous Solar System inside the atom . . . . . . 80--81
H. O. Herzog More Facts About the Flettner Rotor Ship 82--83
Anonymous Some Radio Mysteries Which the Eclipse
Investigation May Help to Explain . . . 85--86
Anonymous The Solar Eclipse . . . . . . . . . . . 86--86
Anonymous Watch Your Step ! . . . . . . . . . . . 87--87
Albert G. Ingalls Is the Steam Horse to Pass Away? . . . . 88--89
Anonymous Picture Feature --- . . . . . . . . . . 90--91
Edward C. Crossman Leading a River Across the Desert . . . 92--93
Alexander Klemin Can we Prevent Aerial Holocausts? . . . 94--96
Henry Norris Russell New Facts About Life on Mars . . . . . . 97--98
Leon Augustus Hausman Revolutionary New Facts About Hair . . . 98--99
Anonymous The High Point of Human Endurance . . . 100--100
Anonymous Which Radio Set to Buy . . . . . . . . . 101--104
Anonymous Letters From Our Readers . . . . . . . . 128--129
Jack Barrett A Cross-Word Puzzle . . . . . . . . . . 130--132
Walter Franklin Prince The Psychic Investigation . . . . . . . 140--140
Anonymous Editorials: Our Point of View . . . . . 156--156
Albert A. Hopkins Inventions New and Interesting . . . . . 174--180
Anonymous Recently Patented Inventions . . . . . . 186--187
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 190--201
Henry Norris Russell The Heavens in March . . . . . . . . . . 201--201
Alexander Klemin Learning to Use Our Wings . . . . . . . 203--207
Austin C. Lescarboura Radio Notes . . . . . . . . . . . . . . 208--211
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 212--212
Mary McFadden What Minute Will You Die? . . . . . . . 149--151
H. W. Slauson The Auto's Toll of Lives . . . . . . . . 152--154
Anonymous ``The Best Observed Eclipse in History'' 155--155
Anonymous Our Artificial Gold Investigation . . . 157--157
Anonymous New Knowledge of Old Egypt . . . . . . . 158--159
S. F. Aaron The Hunting Spiders . . . . . . . . . . 160--160
Calvert Townley The Age of Fire is Passing . . . . . . . 161--163
Anonymous Model Maker Suggests Way to Help New
York Traffic . . . . . . . . . . . . . . 164--164
Henry Norris Russell Widening the Limits of the Universe . . 165--165
Alexander Klemin Future Leviathans of the Skies . . . . . 166--168
Anonymous What Becomes of the Energy Contained in
a Ton of Coal . . . . . . . . . . . . . 169--169
G. H. Morison Heavens Built of Concrete . . . . . . . 170--171
Anonymous Our Radio Page . . . . . . . . . . . . . 172--172
J. H. W. Kerston Streamline Bodies Save Power . . . . . . 173--173
Anonymous Steel to Replace Stone . . . . . . . . . 181--181
Anonymous Which Radio Set to Buy . . . . . . . . . 182--185
Jack Barrett A Cross-Word Puzzle . . . . . . . . . . 188--188
Anonymous Editorials: Our Point of View . . . . . 228--228
Albert A. Hopkins Inventions New and Interesting . . . . . 250--255
Anonymous Recently Patented Inventions . . . . . . 256--258
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 258--268
Alexander Klemin Learning to Use Our Wings . . . . . . . 269--274
Austin C. Lescarboura Radio Notes . . . . . . . . . . . . . . 274--278
E. E. Free Science and Money . . . . . . . . . . . 279--280
Henry Norris Russell The Heavens in April . . . . . . . . . . 280--280
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 283--285
Henry Norris Russell Two Outstanding Features of the Eclipse 221--222
Anonymous Why was the Moon Late? . . . . . . . . . 223--223
Alfred P. Lane and
F. X. Walsh The Effects of the Eclipse on Radio . . 224--226
Anonymous Prize for Criticism of Eclipse Motion
Picture . . . . . . . . . . . . . . . . 227--227
Anonymous A New Link in Man's Ancestry . . . . . . 228--228
Anonymous The Psychic Investigation . . . . . . . 229--229
John Kenlon Why Let Your House Catch Fire? . . . . . 230--232
J. Bernard Walker New Concrete Pier at Bremerton Navy Yard 233--234
Anonymous Devices to Enable a Pilot to Maintain
his Course and Equilibrium in Foggy
Weather . . . . . . . . . . . . . . . . 235--235
K. A. Campbell From the Gold of Croesus to the Gold
Dust Twins . . . . . . . . . . . . . . . 236--237
Albert A. Hopkins Protection from the Tooth of Time . . . 238--238
Lawrence The Unusual Occupation of Inlaying
Prints . . . . . . . . . . . . . . . . . 239--239
Anonymous Our Radio Page . . . . . . . . . . . . . 240--240
Paul B. Findley Electric Filters that Illustrate Defects
of Radio Loudspeakers . . . . . . . . . 241--241
Harold T. Stearns The 1924 Eruption of the Hawaiian
Volcano . . . . . . . . . . . . . . . . 242--243
Anonymous Modern Ideas for Machine Shops . . . . . 244--244
Anonymous The Krupp Turbine Locomotive . . . . . . 245--245
Anonymous The Story of Steel --- XII . . . . . . . 246--247
S. F. Aaron The Smell Organs of Insects . . . . . . 248--249
Anonymous A New Variety of Cross-Word Puzzle . . . 281--282
Anonymous Editorials: Our Point of View . . . . . 300--300
Albert A. Hopkins Inventions New and Interesting . . . . . 321--326
Anonymous Recently Patented Inventions . . . . . . 327--328
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 330--338
Anonymous Science Notes . . . . . . . . . . . . . 341--341
Alexander Klemin Learning to Use Our Wings . . . . . . . 342--347
E. E. Free Science and Money . . . . . . . . . . . 348--349
Henry Norris Russell The Heavens in May . . . . . . . . . . . 349--349
Austin C. Lescarboura Radio Notes . . . . . . . . . . . . . . 350--354
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 355--357
Alfred P. Lane Muscle Shoals --- Bonanza or White
Elephant? . . . . . . . . . . . . . . . 293--295
H. W. Szausore A New Plan for Traffic Laws . . . . . . 296--298
Anonymous Locust Fighting . . . . . . . . . . . . 299--299
Anonymous The Marvelous Speeds of Atomic Particles 301--301
J. Bernard Walker Saving St. Paul's Cathedral . . . . . . 302--304
Anonymous How the Average Man of Seventy-Two has
Spent his Life . . . . . . . . . . . . . 305--305
J. Bernard Walker Last Word on the 5-5-3 Ratio . . . . . . 306--308
Albert G. Ingalls Did Man Evolve in Africa? . . . . . . . 308--309
Anonymous A Policy for the Conservation of Our
Wild Game . . . . . . . . . . . . . . . 310--310
Anonymous A Bird Census . . . . . . . . . . . . . 311--311
Anonymous Mechanical Gas . . . . . . . . . . . . . 312--313
Anonymous The Manufacture of Thermometers . . . . 314--314
Henry Norris Russell Are there Other Habitable Worlds? . . . 315--316
Anonymous The Story of Steel --- XIII . . . . . . 316--317
S. F. Aaron Mighty Hunters in the World of Ants . . 318--319
Anonymous This Laboratory Can Supply Electric
Currents with the Tremendous Potential
of Over a Million Volts . . . . . . . . 320--320
Milton Wright News for Inventors . . . . . . . . . . . 328--330
William McDougall The ``Margery Mediumship'' . . . . . . . 339--341
Anonymous Editorials: Our Point of View . . . . . 372--372
Albert A. Hopkins Inventions New and Interesting . . . . . 392--395
Anonymous Recently Patented Inventions . . . . . . 398--400
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 402--413
Alexander Klemin Learning to Use Our Wings . . . . . . . 414--417
John K. Brachvogel Science and Money . . . . . . . . . . . 418--419
Anonymous Science Notes . . . . . . . . . . . . . 419--420
Henry Norris Russell The Heavens in June . . . . . . . . . . 420--420
Thomas Elway Radio Notes . . . . . . . . . . . . . . 421--425
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 426--430
Albert G. Ingalls Out of Doors With the Earth . . . . . . 365--367
J. Bernard Walker The Oxford and Cambridge Boat Race . . . 368--370
Anonymous How Science Aids the Safety of German
Ships . . . . . . . . . . . . . . . . . 371--371
Anonymous Herbert Hoover and the Patent Office 373--373
Charles Fitzhugh Talman Vacation Meteorology and the Lure of
Cloudland . . . . . . . . . . . . . . . 374--376
Anonymous Analyzing a ``Pea Souper'' . . . . . . . 377--377
A. Forestier The Roman Villa at Chedworth . . . . . . 378--379
J. Bernard Walker The Low-Resistance Airplane . . . . . . 380--381
Paul B. Findley Making the Air Tell Tales on itself . . 382--383
Anonymous New Motor Liner Aorangi . . . . . . . . 384--384
Henry Norris Russell The Star Called ``Wonderful'' . . . . . 385--386
Anonymous A Three-hundred-ton Machine Tool . . . . 387--387
Anonymous The Story of Steel --- XIV . . . . . . . 388--389
S. F. Aaron What are the Sounds that Insects Hear? 390--391
Milton Wright News for Inventors . . . . . . . . . . . 398--398
Anonymous Editorials: Our Point of View . . . . . 12--12
Albert A. Hopkins Inventions New and Interesting . . . . . 35--38
Anonymous Recently Patented Inventions . . . . . . 39--40
Anonymous Science Notes . . . . . . . . . . . . . 51--51
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 52--56
Alexander Klemin Learning to Use Our Wings . . . . . . . 57--61
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 62--66
Henry Norris Russell The Heavens in July . . . . . . . . . . 66--66
Chase Donaldson Science and Money . . . . . . . . . . . 68--68
Roy Waldo Miner The Kingdom of the Tides . . . . . . . . 5--7
Anonymous Air Traffic in Europe . . . . . . . . . 8--9
Henry S. Washington What the Earth is Made of . . . . . . . 10--11
Anonymous The Cathedral of Learning . . . . . . . 13--13
M. R. Harrington The ``Lost City'' of Nevada . . . . . . 14--16
Anonymous The Amazing World Growth of Telephone
Facilities . . . . . . . . . . . . . . . 17--17
Orrin E. Dunlap, Jr. Enjoy Your Radio ``Far from the Madding
Crowd'' . . . . . . . . . . . . . . . . 18--19
J. Bernard Walker The Passing of ``Old Ironsides'' . . . . 20--22
Anonymous ``Cross-Words'' Anno Domini 225 . . . . 23--23
H. E. Howe Chemistry in World Affairs --- I . . . . 24--25
E. J. Goodnough There are no ``Jimmy Valentines'' . . . 26--27
Anonymous World's Greatest City Water Supply
System . . . . . . . . . . . . . . . . . 28--28
Henry Norris Russell Three Newly Discovered Comets . . . . . 29--29
Theodore M. Knappen The Dire Demon in Our Forests . . . . . 30--32
P. Cormac Engine Balance . . . . . . . . . . . . . 33--34
Milton Wright News for Inventors . . . . . . . . . . . 39--39
Thomas F. Lee Banana Land . . . . . . . . . . . . . . 41--41
Ewald Schild The Wonderful Weaver of Webs . . . . . . 42--43
Anonymous Putting Slag to Work . . . . . . . . . . 44--45
J. P. Ault Surveying the Oceans With the
Non-Magnetic Yacht ``Carnegie'' . . . . 46--47
Anonymous Making the Staff of Life by Machinery 48--49
Anonymous ``Which Races are Best?'' . . . . . . . 50--51
Anonymous Editorials: Our Point of View . . . . . 84--84
Albert A. Hopkins Inventions New and Interesting . . . . . 114--118
Anonymous Recently Patented Inventions . . . . . . 119--121
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 122--125
Alexander Klemin Learning to Use Our Wings . . . . . . . 126--129
Anonymous In the Editor's Mail . . . . . . . . . . 130--132
Henrv Norris Russell The Heavens in August . . . . . . . . . 134--134
Chase Donaldson Science and Money . . . . . . . . . . . 135--135
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 136--142
H. W. Slauson Saving the Motorist from Himself . . . . 77--79
Sir Oliver Lodge Matter, Ether and Energy . . . . . . . . 80--81
Milton Wright The Skin Game . . . . . . . . . . . . . 82--83
J. Allen Gilbert ``Spirit Return'' . . . . . . . . . . . 85--85
Albert A. Hopkins Plumbing the Depths of Neptune's Secrets 86--87
Henry Norris Russell Remarkable New Tests Favor the Einstein
Theory . . . . . . . . . . . . . . . . . 88--88
Anonymous How the True Cattalo is Bred . . . . . . 89--89
Major H. H. Arnold Contact and Refueling Now Accomplished
in the Air . . . . . . . . . . . . . . . 90--91
William I. Wyman A Record of Achievement . . . . . . . . 92--92
Orrin E. Dunlap, Jr. Radio at the North Pole . . . . . . . . 93--93
G. A. Rankin How Explosive are Explosives? . . . . . 94--95
H. E. Howe Chemistry in World Affairs --- II . . . 96--97
Edward Ellington Daylight, Twilight and Mist in the
Movies . . . . . . . . . . . . . . . . . 98--99
Dudley W. Knox Another Side of the 5-5-3 Argument . . . 100--101
J. Bernard Walker The Delaware River Bridge . . . . . . . 102--103
Francis Dickie The Centenary of the Railroad . . . . . 104--105
S. F. Aaron Mammals Almost as Small as Insects . . . 106--107
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 108--109
Robert L. Duffus Fish from Artesian Wells in the Sahara 110--111
Thomas R. Horner The Mountains Light a City . . . . . . . 112--113
Milton Wright News for Inventors . . . . . . . . . . . 119--119
P. Cormac Engine Balance . . . . . . . . . . . . . 133--134
Anonymous Editorials: Our Point of View . . . . . 156--156
Albert A. Hopkins Inventions New and Interesting . . . . . 188--190
Anonymous Recently Patented Inventions . . . . . . 191--193
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 194--194
Anonymous In the Editor's Mail . . . . . . . . . . 198--199
Henry Norris Russell The Heavens in September . . . . . . . . 199--199
Alexander Klemin Learning to Use Our Wings . . . . . . . 200--203
Chase Donaldson Science and Money . . . . . . . . . . . 204--205
Anonymous Science Notes . . . . . . . . . . . . . 205--205
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 208--213
James H. Collins Panic! . . . . . . . . . . . . . . . . . 149--151
J. Bernard Walker Wind, Sail and Sea . . . . . . . . . . . 152--153
John J. Wallace The Impossible in Stage Lighting is
Achieved . . . . . . . . . . . . . . . . 154--155
Albert G. Ingalls Did Man Descend from Monkeys? . . . . . 157--157
S. P. Meek Tagging a Bullet on the Wing . . . . . . 158--159
Henry Norris Russell The Theory of Stellar Evolution Modified 160--160
Anonymous The Silent Menace of the Oceans . . . . 161--161
Nicolas P. Rashevsky Must Our Universe be Infinite? . . . . . 162--163
Boyden Sparks Safeguarding the Airplane Pilot . . . . 164--165
Philip N. Youtz The Higher Education of the Silkworm . . 166--167
Orrin E. Dunlap, Jr. Will Your Radio Set be Obsolete? . . . . 168--169
George K. Burgess United States Bureau of Standards
Eclipse Observations . . . . . . . . . . 170--171
Alanson B. Skinner Grisly War Trophies . . . . . . . . . . 172--173
Frederic M. Delano How the Parisian Enjoys Opera at Home 174--174
H. E. Howe Chemistry in World Affairs --- III . . . 175--177
J. Bernard Walker Some Naval Theories Exploded . . . . . . 178--179
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 180--181
Channing Patten The Life Spark of Motordom . . . . . . . 182--183
S. F. Aaron Insect Parasites of Insects . . . . . . 184--185
Albert G. Ingalls New Light on Evolving Man . . . . . . . 186--187
Milton Wright News for Inventors . . . . . . . . . . . 191--192
Anonymous Editorials: Our Point of View . . . . . 228--228
Albert A. Hopkins Inventions New and Interesting . . . . . 256--257
Anonymous Recently Patented Inventions . . . . . . 258--259
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 260--266
Henry Norris Russell The Heavens in October . . . . . . . . . 266--266
Anonymous In the Editor's Mail . . . . . . . . . . 268--270
Chase Donaldson Science and Money . . . . . . . . . . . 271--272
Alexander Klemin Learning to Use Our Wings . . . . . . . 273--278
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 279--282
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 283--283
Guy Elliott Mitchell Heroes of Mapmaking . . . . . . . . . . 221--223
Richard E. Enright Everybody Should be Fingerprinted . . . 224--225
Anonymous Can Old Age be Deferred? . . . . . . . . 226--227
Anonymous The Barnard Ultra-Microscope and
Photo-Micrographs of the Cancer Germ . . 229--229
A. Smits and
A. Karssen Cracking the Lead Atom . . . . . . . . . 230--231
Anonymous Making the Movie Film Give the Music
Cues . . . . . . . . . . . . . . . . . . 232--232
Paul B. Findley Checking the Magnetic Permeability of
Iron . . . . . . . . . . . . . . . . . . 233--233
Albert G. Ingalls Evolution, From the Nebula to 1925 . . . 234--235
Victor G. Heiser The World's Largest Leper Colony . . . . 236--237
Val. Fendrich On their Way in Thirty Seconds . . . . . 238--240
Henry Norris Russell The New, or Modified, Form of the Theory
of Stellar Evolution . . . . . . . . . . 241--241
Morris Fishbein The Progress of Medical Science --- I 242--243
Orrin E. Dunlap, Jr. Super-Radio to Span the Atlantic . . . . 244--245
Arthur H. Compton Light Waves or Light Bullets? . . . . . 246--247
Albert A. Hopkins Elevators With Electric Brains . . . . . 248--249
Hector C. Bywater New Treaty Battleships ``Nelson'' and
``Rodney'' . . . . . . . . . . . . . . . 250--251
Anonymous Which Radio Set is Ideal for You? . . . 252--255
Milton Wright News for Inventors . . . . . . . . . . . 258--258
Anonymous Editorials: Our Point of View . . . . . 300--300
Albert A. Hopkins Inventions New and Interesting . . . . . 326--328
Anonymous Recently Patented Inventions . . . . . . 329--331
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 332--332
Alexander Klemin Learning to Use Our Wings . . . . . . . 340--345
Anonymous In the Editor's Mail . . . . . . . . . . 346--348
Chase Donaldson Science and Money . . . . . . . . . . . 349--349
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 350--357
Albert G. Ingalls ``The Heavens Declare the Glory of God'' 293--295
Anonymous Tests Fail to Confirm Transmutation to
Gold . . . . . . . . . . . . . . . . . . 296--297
Tom White Every Crime is Entrenched Behind a Lie 298--299
J. Bernard Walker The Tragedy of the ``Shenandoah'' . . . 301--301
Nell Ray Clarke Fighting Disease With Aniline Dyes . . . 302--303
Henry Norm Russell Nova Pictoris --- A Temporary Star . . . 304--304
Anonymous Controlling a Million Horsepower . . . . 305--305
Leon Augustus Hausman Why Hair Turns Gray . . . . . . . . . . 306--307
Orrin E. Dunlap, Jr. An Invisible Police Alarm . . . . . . . 308--309
Morris Fishbein The Progress of Medical Science --- II 310--311
James C. Bardin The Amazingly Accurate Calendar System
of the Maya Indians . . . . . . . . . . 312--313
Louis S. Treadwell Another Victory for Oil Equipment . . . 314--315
George F. Paul Linking Mexico and California . . . . . 316--317
James W. Bayless Have We Too Many Traffic Laws? . . . . . 318--319
James W. Mavor What is a Gynandromorph? . . . . . . . . 322--322
Anonymous The Short-lived, Eight-foot Flower of
Sumatra . . . . . . . . . . . . . . . . 323--323
Milton Wright News for Inventors . . . . . . . . . . . 329--329
Henry Norris Russell The Heavens in November . . . . . . . . 339--339
Anonymous Editorials: Our Point of View . . . . . 372--372
Albert A. Hopkins Inventions New and Interesting . . . . . 398--400
Anonymous Recently Patented Inventions . . . . . . 401--402
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 403--407
Alexander Klemin Learning to Use Our Wings . . . . . . . 408--420
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 421--427
Anonymous In the Editor's Mail . . . . . . . . . . 428--429
Chase Donaldson Science and Money . . . . . . . . . . . 430--431
Henry Norris Russell The Heavens in December . . . . . . . . 431--431
Alexander Klemin The Air Races of 1925 . . . . . . . . . 365--368
Henry Norris Russell Is the Universe Running Down? . . . . . 369--369
Walter Franklin Prince My Doubts About Spirit Photographs . . . 370--371
Anonymous Tragic Loss of the Submarine S-51 . . . 373--374
Rudolph M. Binder Man is what he Eats . . . . . . . . . . 374--375
William H. Woodwell The ``Constitution'' Saved by Canvas Sea
Anchors . . . . . . . . . . . . . . . . 376--376
Anonymous Veterinary Department of Western
University . . . . . . . . . . . . . . . 377--377
Orrin E. Dunlap, Jr. Does a Radio ``Roof'' Top the World? . . 378--380
Morris Fishbein The Progress of Medical Science --- III 380--382
D. H. Killeffer Plating Rubber, Just Like Metal . . . . 382--384
Edward C. Grossman The Arrival of the Boat-tail Bullet . . 384--386
Albert A. Hopkins A Machine that is More than Human . . . 386--387
Anonymous What Becomes of Your Railroad Fares . . 388--390
Lewis R. Freeman Bridge to Span the Grand Canyon . . . . 390--392
Albert G. Ingalls Buried Treasure . . . . . . . . . . . . 392--394
John L. Von Blon Naturalizing the Chinchilla . . . . . . 394--396
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 396--397
Milton Wright News for Inventors . . . . . . . . . . . 401--402
Anonymous Editorials: Our Point of View . . . . . 12--12
Albert A. Hopkins Inventions New and Interesting . . . . . 38--41
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 42--46
Alexander Klemin Learning to Use Our Wings . . . . . . . 48--48
Anonymous In the Editor's Mail . . . . . . . . . . 57--59
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 62--67
Henry C. Trundle Science and Money . . . . . . . . . . . 68--69
Henry Norris Russell The Heavens in January . . . . . . . . . 69--69
Milton Wright Commercial Property News . . . . . . . . 70--70
Anonymous Patents Recently Issued . . . . . . . . 70--71
Anonymous The Tragedy of the Indian . . . . . . . 5--7
Albert G. Ingalls Are the Continents Drifting? . . . . . . 8--9
Edward C. Crossman Shooting Clinker Rings from Kilns . . . 10--10
Albert G. Ingalls Are These Elephants? . . . . . . . . . . 11--11
Anonymous Spirit Mediums Fail in Test . . . . . . 13--13
H. W. Slauson Comfort from Your Motor . . . . . . . . 14--15
Henry Norris Russell American Eclipse Expeditions to the Far
East . . . . . . . . . . . . . . . . . . 16--16
Anonymous Steps in the Manufacture of the
All-important Rear Axle . . . . . . . . 17--17
Orrin E. Dunlap, Jr. Giving Trains a Radio Voice . . . . . . 18--19
J. Reid Moir Men of the Early Glacial Epoch . . . . . 20--21
Anonymous Machining Mountainous Masses of Metal 22--23
Anonymous The Largest American-Built Liner . . . . 24--24
Anonymous The Peril of Gas Poisoning . . . . . . . 25--25
Morris Fishbein The Progress of Medical Science --- IV 26--27
Stephen Jones Seeing Our Speech as Others Hear It . . 28--29
J. Bernard Walker Running a River Through a Mountain . . . 30--31
Anonymous The Automatic Quartermaster . . . . . . 32--32
Anonymous From the Oldest City in the World . . . 33--33
S. F. Aaron Wintering Habits of Insects . . . . . . 34--35
Henry B. Curry The Music of the Skies . . . . . . . . . 36--37
Anonymous Editorials: Our Point of View . . . . . 84--84
Albert A. Hopkins Inventions New and Interesting . . . . . 110--113
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 114--118
Alexander Klemin Learning to Use Our Wings . . . . . . . 120--128
Henry C. Trundle Science and Money . . . . . . . . . . . 130--132
Henry Norris Russell The Heavens in February . . . . . . . . 132--132
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 133--137
Anonymous In the Editor's Mail . . . . . . . . . . 138--140
Milton Wright Commercial Property News . . . . . . . . 142--142
Anonymous Patents Recently Issued . . . . . . . . 142--143
E. E. Free Have we Food to Feed Our Immigrants . . 77--79
A. Smits and
A. Karssen The Transmutation of Elements . . . . . 80--81
Beverly L. Clarke What is Life . . . . . . . . . . . . . . 82--83
Anonymous The Sacrificial Pool of the Maya Indian
Maidens . . . . . . . . . . . . . . . . 85--85
Russell W. Porter Mirror Making for Reflecting Telescopes 86--89
Orrin E. Dunlap, Jr. Girdling the Earth With a Radio Beam . . 90--91
Anonymous Neptune and the Postman . . . . . . . . 92--92
Albert G. Ingalls Canned Radio Telegraphy . . . . . . . . 93--93
Henry Norris Russell What are Shooting Stars and Meteorites? 94--94
Anonymous Two Brilliant Planets, Jupiter and
Venus, in Conjunction . . . . . . . . . 95--95
Hugh Hammond Bennett Shall we Throw Away our Soil? . . . . . 96--97
Guy E. Mitchell The Standing Stone Forests of Wyoming 98--99
Francis A. Westbrook An Epoch-Making Engineering Achievement 100--101
Guy E. Mitchell Mapping Unknown Alaska . . . . . . . . . 102--103
Joseph P. Maxfield Electrical Research Applied to the
Phonograph . . . . . . . . . . . . . . . 104--105
Nell Ray Clarke Ice Flowers . . . . . . . . . . . . . . 106--107
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 108--109
Anonymous Editorials: Our Point of View . . . . . 156--156
Albert A. Hopkins Novel Devices for the Shop and the Home 182--184
Albert G. Ingalls The \booktitleScientific American
Industrial Digest . . . . . . . . . . . 185--186
Henry Norris Russell The Heavens in March . . . . . . . . . . 194--194
Henry C. Trundle Science and Money: Science and Money the
Oil Industry . . . . . . . . . . . . . . 196--197
Anonymous In the Editor's Mail . . . . . . . . . . 198--198
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 202--205
Alexander Klemin Learning to Use Our Wings . . . . . . . 206--211
Milton Wright Commercial Property News . . . . . . . . 214--214
Anonymous Patents Recently Issued . . . . . . . . 214--216
R. A. Millikan Cosmic Rays . . . . . . . . . . . . . . 149--150
Noel W. Smith Our Alaska Railroad . . . . . . . . . . 151--153
Harold J. Shepstone Solving Greenland's Historic Mystery . . 154--155
Henry Norris Russell Star Clusters . . . . . . . . . . . . . 157--157
Guy Elliot Mitchell The Subjugation of the Colorado . . . . 158--159
Anonymous Cooling Your House in Summer . . . . . . 160--160
Anonymous Scenes in a Pineapple Cannery in Hawaii 161--161
Orrin E. Dunlap, Jr. Seeing Around the World by Radio . . . . 162--163
Russell W. Porter Mountings for Reflecting Telescopes . . 164--167
D. H. Killeffer Peacetime Uses for ``Poison Gas'' . . . 168--169
Nell Ray Clarke Telephoning Beneath the Sea . . . . . . 170--170
Anonymous A Tree of Electricity . . . . . . . . . 171--171
Colin G. Fink and
Charles H. Eldridge The Restoration of Ancient Bronzes . . . 172--173
Karl J. Ellington More Mud Houses . . . . . . . . . . . . 174--175
Albert A. Hopkins The Art of Cutting Diamonds . . . . . . 176--177
S. F. Aaron The Carolina Wren . . . . . . . . . . . 178--179
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 180--181
Anonymous Editorials: Our Point of View . . . . . 228--228
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 257--260
Alexander Klemin Learning to Use Our Wings . . . . . . . 262--262
Anonymous Science Notes . . . . . . . . . . . . . 271--271
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 272--275
Anonymous In the Editor's Mail . . . . . . . . . . 276--278
Albert A. Hopkins Notes and Queries . . . . . . . . . . . 279--279
Henry C. Trundle Science and Money . . . . . . . . . . . 280--282
Henry Norris Russell The Heavens in April . . . . . . . . . . 282--282
Milton Wright Commercial Property News . . . . . . . . 284--284
Anonymous Patents Recently Issued . . . . . . . . 284--286
Theodore Leslie Shear Recent Excavations at Corinth . . . . . 221--223
A. V. Hill The Scientific Study of Athletics . . . 224--225
J. Bernard Walker Heroism on the High Seas . . . . . . . . 226--227
Henry Norris Russell A Stellar System 700,000 Light-Years
Away . . . . . . . . . . . . . . . . . . 229--229
J. Bernard Walker Uncle Sam, Spendthrift --- I . . . . . . 230--232
Thomas Gann A New Maya Discovery in Mexico . . . . . 233--233
Orrin E. Dunlap, Jr. Shooting Radio Concerts into the Sky . . 234--235
Frank W. Skinner Diving Through Mud to Rock . . . . . . . 236--236
M. Luckiesh The Super-Telescope . . . . . . . . . . 237--237
Milton Wright Down on the Fish Farm . . . . . . . . . 238--239
D. H. Killeffer \$300,000,000 Annually Consumed by Rust! 240--241
John L. Von Blon A ``Garden of Allah'' in Death Valley 242--243
Oscar Lewis New Arenas of Sport . . . . . . . . . . 244--245
George F. Paul The Six-Mile Moffat Tunnel . . . . . . . 246--246
Guy E. Mitchell The Persian Lamb and Our Fur Industry 247--247
J. W. Tarrentine Goiter --- A Dietary Problem . . . . . . 248--249
Anonymous Interest Revived in Racing Pigeons . . . 250--250
Leon Augustus Hausman The Mythological Rain-Tree . . . . . . . 251--251
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 252--253
Albert A. Hopkins Novel Devices for the Shop and the Horne 254--256
Anonymous Editorials: Our Point of View . . . . . 300--300
Albert A. Hopkins Novel Devices for the Shop and the Home 326--328
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 329--337
Henry C. Trundle Science and Money . . . . . . . . . . . 338--340
Henry Norris Russell The Heavens in May . . . . . . . . . . . 340--340
Anonymous In the Editor's Mail . . . . . . . . . . 341--344
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 345--350
Alexander Klemin Learning to Use Our Wings . . . . . . . 351--356
Milton Wright Commercial Property News . . . . . . . . 357--358
Anonymous Patents Recently Issued . . . . . . . . 357--359
G. Elliot Smith Ancient Mariners and the Spread of Early
Civilization . . . . . . . . . . . . . . 293--294
T. D. A. Cockerell How Can We Produce Scientific Workers? 295--295
David Starr Jordan Malaria and the Mosquito Fish . . . . . 296--297
H. H. Sheldon Acoustical Research in Auditoriums . . . 298--299
Colonel H. E. Cloke Is Anti-aircraft Artillery Overtaking
the Airplane? . . . . . . . . . . . . . 301--303
Henry Norris Russell The Great Outer Planets . . . . . . . . 304--304
Anonymous Tut-Ankh-Amen's Golden Coffins, the Work
of Ancient Egypt's Most Skilled Artisans 305--305
Orrin E. Dunlap, Jr. Radio Whirlpools in the Ether . . . . . 306--307
George Grant MacCurdy Old Problems and New Methods in
Prehistory . . . . . . . . . . . . . . . 308--309
William Duncan MacMillan The New Cosmology . . . . . . . . . . . 310--311
Winfield Scott A Diamond Quest in California . . . . . 312--313
Anonymous Interesting Air Stamps and Historic
Cancellations . . . . . . . . . . . . . 314--314
J. Bernard Walker Horsepower from the Tides . . . . . . . 315--315
R. K. Helphenstine, Jr. A Way to Conserve Our Valuable Timber
Supply . . . . . . . . . . . . . . . . . 316--317
J. E. Murphy Western City Ends Flood Menace . . . . . 318--319
James H. Collins An Underground Moving Picture Theatre 320--320
Anonymous Fossils in Architecture . . . . . . . . 321--321
S. F. Aaron Nature Faking . . . . . . . . . . . . . 322--323
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 324--325
Anonymous Editorials: Our Point of View . . . . . 372--372
Albert A. Hopkins Novel Devices for the Shop and the Home 399--400
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 402--402
Alexander Klemin Learning to Use Our Wings . . . . . . . 413--416
Anonymous In the Editor's Mail . . . . . . . . . . 417--419
Henry C. Trundle Science and Money . . . . . . . . . . . 420--421
Henry Norris Russell The Heavens in June . . . . . . . . . . 421--421
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 422--427
Milton Wright Commercial Property News . . . . . . . . 428--428
Anonymous Patents Recently Issued . . . . . . . . 428--429
Anonymous Index to Volume 134 --- January--June,
1926 . . . . . . . . . . . . . . . . . . 431--431
Luther Burbank Prodigal Mother Nature . . . . . . . . . 365--366
Henry Norris Russell How to Observe the Great, New Sun Spots 367--367
H. W. Slauson And We Call Ourselves Efficient . . . . 368--369
Frank Wigglesworth Clarke The Internal Heat of the Earth . . . . . 370--371
Anonymous The Great Crimson Aurora of March 9, as
Seen Over the City of London . . . . . . 373--373
Anonymous Mileage Goes Up in Smoke . . . . . . . . 374--374
J. Bernard Walker Uncle Sam, Spendthrift --- II . . . . . 375--376
Anonymous Houses Built in Twenty-four Hours! . . . 377--377
D. T. MacDougal The Hydrostatic System of Trees . . . . 378--379
Albert A. Hopkins The Applied Science of Public Spending 380--381
Milton Wright Budding Scientists . . . . . . . . . . . 382--383
Howland Wood Odd Pieces of Change . . . . . . . . . . 384--385
Anonymous X-Rays and Atoms . . . . . . . . . . . . 386--387
Orrin E. Dunlap, Jr. Eavesdropping on the Arctic . . . . . . 388--389
W. H. P. Blandy The Manufacture of a Battleship's Turret
Guns . . . . . . . . . . . . . . . . . . 390--391
J. Bernard Walker Annapolis . . . . . . . . . . . . . . . 392--394
Anonymous Oil Engine in a New Field . . . . . . . 395--395
Anonymous Something New in Gas Holders . . . . . . 398--398
Anonymous Editorials: Our Point of View . . . . . 12--12
Albert A. Hopkins Novel Devices for the Shop and the Home 45--49
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 51--56
Alexander Klemin Learning to Use Our Wings . . . . . . . 60--65
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 66--71
Anonymous In the Editor's Mail . . . . . . . . . . 72--74
Henry C. Trundle Science and Money . . . . . . . . . . . 75--76
Henry Norris Russell The Heavens in July . . . . . . . . . . 76--76
Milton Wright Commercial Property News . . . . . . . . 77--77
Anonymous Patents Recently Issued . . . . . . . . 77--79
Ales Hrdlicka The Race and Antiquity of the American
Indian . . . . . . . . . . . . . . . . . 7--9
H. H. Sheldon Polarized Light and Plants . . . . . . . 10--11
Henry Norris Russell Is the Earth's Diameter Changing? . . . 13--13
T. D. A. Cockerell Natural History for Tourists . . . . . . 14--15
Noel Deisch How High Up? . . . . . . . . . . . . . . 16--18
Anonymous Miniature Amusement Devices for the Tiny
Tots . . . . . . . . . . . . . . . . . . 19--19
Walter Franklin Prince The Riddle of Patience Worth . . . . . . 20--22
Archer P. Whallon Science Invades the Farm . . . . . . . . 23--25
F. A. Moss Do you Know how to Get Along with
People? . . . . . . . . . . . . . . . . 26--27
J. Bernard Walker Latest of Our Great Bridges . . . . . . 28--29
Orrin E. Dunlap, Jr. Building a Talk-bridge Over the Sea . . 30--31
J. Bernard Walker The Welland Ship Canal . . . . . . . . . 32--33
Anonymous A Romantic Achievement in Industrial
Chemistry . . . . . . . . . . . . . . . 34--36
O. M. Kile Measuring the Color of Hay . . . . . . . 37--37
Anonymous Agriculture in the Tropics . . . . . . . 38--39
Anonymous Forty-one Hours from Raw Materials to
the Finished Automobile --- Through
Systematic Production Methods . . . . . 40--41
Anonymous Killing Vibration . . . . . . . . . . . 42--43
Anonymous What Will the Next Ten Years Reveal in
Yucatan? . . . . . . . . . . . . . . . . 44--44
Anonymous Branding Timber by Machinery . . . . . . 50--50
Anonymous Editorials: Our Point of View . . . . . 92--92
Albert A. Hopkins Novel Devices for the Shop and the Home 126--129
Albert G. Ingall \booktitleScientific American Digest:
The \booktitleScientific American Digest 132--136
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 138--142
Alexander Klemin Learning to Use Our Wings . . . . . . . 143--149
Anonymous In the Editor's Mail . . . . . . . . . . 150--152
Henry C. Trundle Science and Money . . . . . . . . . . . 154--155
Henry Norris Russell The Heavens in August . . . . . . . . . 155--155
Milton Wright Commercial Property News . . . . . . . . 156--156
Anonymous Patents Recently Issued . . . . . . . . 156--158
Ralph Waldo Miner A Trip to the Bottom of the Sea . . . . 87--89
Francis A. Tondorf Guesswork --- or Science? . . . . . . . 90--91
Anonymous Raising Caligula's Sunken Galleys . . . 93--93
Henry S. Washington The Testimony of the Jades . . . . . . . 94--95
Henry Norris Russell The Fondest Dreams of the Astronomer . . 96--96
Anonymous If House Flies Were as Big as Birds . . 97--97
Milton Wright The Education of a Parachute Jumper . . 98--100
J. Bernard Walker Uncle Sam, Spendthrift --- III . . . . . 101--103
J. Bernard Walker Giant Floating Aircraft Bases . . . . . 104--105
H. H. Sheldon The Physics of Golf Balls . . . . . . . 106--107
Anonymous Air --- driven Sea Sled Has Shallow
Draft . . . . . . . . . . . . . . . . . 108--108
Albert C. Ingalls The Great Earth--Moon Catastrophe . . . 109--109
Orrin E. Dunlap, Jr. Radio and the ``Black'' Sun . . . . . . 110--111
N. A. Parkinson The Latest Member of Our Textile Family 112--114
Anonymous Scientific Accuracy a Commercial
Necessity . . . . . . . . . . . . . . . 115--115
M. R. Harrington Ancient Salt Mines of the Indians . . . 116--117
Anonymous The Automobile Accident Problem Analyzed 118--118
Anonymous A Monster that Answers a Finger's Touch 119--119
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 120--121
Herbert O. Warren A Treasure Island in the Pacific . . . . 122--123
J. Bernard Walker The Panama Canal Today . . . . . . . . . 124--125
Anonymous Types of Modern Bridges . . . . . . . . 130--130
Anonymous Paper Sculpture . . . . . . . . . . . . 131--131
Anonymous Editorials: Our Point of View . . . . . 172--172
Albert A. Hopkins Novel Devices for the Shop and the Home 206--208
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 209--221
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 222--225
Alexander Klemin Learning to Use Our Wings . . . . . . . 226--232
Henry Norris Russell The Heavens in September . . . . . . . . 232--232
Anonymous In the Editor's Mail . . . . . . . . . . 233--234
Milton Wright Commercial Property News . . . . . . . . 237--237
Anonymous Patents Recently Issued . . . . . . . . 237--239
Gladys Thompson American Building Methods in Greece . . 166--168
Anonymous French trans-African Expedition . . . . 169--169
J. Reid Moir Was the Cave Man a House-builder? . . . 170--171
Anonymous Fire-escape for Bed-ridden Hospital
Patients . . . . . . . . . . . . . . . . 173--173
Henry Norris Russell A Twenty-Five Foot ``Eye'' . . . . . . . 174--175
Anonymous A New Chapter in Electrical Engineering 176--177
Orrin E. Dunlap, Jr. Acres of Radio . . . . . . . . . . . . . 178--179
J. Bernard Walker Uncle Sam, Spendthrift --- IV . . . . . 180--181
H. L. Shapiro The Romance of the Norfolk Islanders . . 182--184
Anonymous Reclaiming Three Million Acres of
``Darkest Africa'' . . . . . . . . . . . 185--185
H. H. Sheldon A Distinctly New Rectifier . . . . . . . 186--187
Nell Ray Clarke Are we Over the Pole? . . . . . . . . . 188--189
Raymond H. Wallace Plants Grow in Air-tight Containers . . 190--191
Anonymous Beacons of Safety . . . . . . . . . . . 192--193
Anonymous Fingerprints as Identification Marks in
Ancient Greece --- a Brief for Early
Trade-marks . . . . . . . . . . . . . . 194--194
Anonymous A Zeppelin Express Cruiser . . . . . . . 195--195
Anonymous Metal versus Fabric . . . . . . . . . . 196--197
J. Bernard Walker What Lowered the Great Lakes . . . . . . 198--199
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 200--201
Anonymous Four Interesting Members of the Reptile
Family . . . . . . . . . . . . . . . . . 202--202
Anonymous Huge Gold Dredges of the West . . . . . 203--203
Anonymous Snow-white Marble of Carrara Still the
Best . . . . . . . . . . . . . . . . . . 204--205
Anonymous Editorials: Our Point of View . . . . . 252--252
Albert A. Hopkins Novel Devices for the Shop and the Home 286--288
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 289--290
Henry Norris Russell The Heavens in October . . . . . . . . . 300--300
Alexander Klemin Learning to Use Our Wings . . . . . . . 301--305
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 306--310
Anonymous In the Editor's Mail . . . . . . . . . . 311--314
Milton Wright Commercial Property News . . . . . . . . 316--316
Anonymous Patents Recently Issued . . . . . . . . 316--318
David Starr Jordan Cold Lights of the Sea . . . . . . . . . 247--248
Anonymous The Direful Scourge Called ``Hail'' . . 249--249
Paul R. Heyl The Wonder of the Commonplace . . . . . 250--251
Henry Norris Russell Redetermining the Velocity of Light . . 253--253
J. Bernard Walker The ``America's'' Cup Defenders . . . . 254--256
Edward Ellsberg The Salvage of the ``S-51'' . . . . . . 257--259
Orrin E. Dunlap, Jr. Amateurs Find Marconi was Right . . . . 260--261
Anonymous Important Discoveries Made by
Archaeologists at Leptis Magna, in
Tripolitania, the Italian Possession on
the South Shore of the Mediterranean Sea 262--263
T. D. A. Cockerell Hunting Fossil Insects . . . . . . . . . 264--265
Nell Ray Clarke Guinea Pigs of Motordom! . . . . . . . . 266--267
Louis S. Treadwell Clean Comfort in the Home . . . . . . . 268--269
J. Bernard Walker Uncle Sam, Spendthrift --- V . . . . . . 270--271
Albert G. Ingalls Little-known Ice Ages of Great Antiquity 272--273
Frank W. Skinner Huge Job of Solid Rock Excavation . . . 274--275
J. L. Miller The Scourge of the Japanese Beetle . . . 276--277
Richard Swann Lull Yale's Great New Museum of Evolution . . 278--279
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 280--281
Grafton Tyler Brown What Asthma and Hay-fever Are . . . . . 282--283
Anonymous World's Largest Sewage Disposal Problem 284--285
Anonymous Editorials: Our Point of View . . . . . 332--332
Albert A. Hopkins Novel Devices for the Shop and the Home 365--368
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 370--370
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 381--385
Anonymous In the Editor's Mail . . . . . . . . . . 386--390
Henry Norris Russell The Heavens in November . . . . . . . . 390--390
Alexander Klemin Learning to Use Our Wings . . . . . . . 391--394
Milton Wright Commercial Property News . . . . . . . . 397--398
Anonymous Patents Recently Issued . . . . . . . . 398--399
Hector C. Bywater The Treaty Cruiser --- is it Worth
While? . . . . . . . . . . . . . . . . . 326--328
Anonymous Parachute Carries Air plane to Earth . . 329--329
Karl T. Compton The Excited States of Atoms . . . . . . 330--331
Henry Norris Russell Mars Again Our Neighbor . . . . . . . . 333--333
Harold J. Cook The Antiquity of Man in America . . . . 334--336
Anonymous A Practical Hand-propelled Vehicle of
Unique Construction . . . . . . . . . . 337--337
Alfred P. H. Tawresey Reducing Errors in Navy Signaling . . . 338--339
Orrin E. Dunlap, Jr. Autumn Styles in Radio . . . . . . . . . 340--341
J. Bernard Walker Uncle Sam, Spendthrift --- VI . . . . . 342--343
A. M. Candy Can Welding Replace the Rivet? . . . . . 344--345
Dorothy E. Fletcher Can We Rid City Air of Dust? . . . . . . 346--347
J. Reid Moir The Fossil Bones of Early Man . . . . . 348--349
Anonymous Latest Lofty Dam in California . . . . . 350--350
Anonymous Giant Testing Machine Pulls 2,800,000
Pounds . . . . . . . . . . . . . . . . . 351--351
S. F. Aaron Classifying the Arthropod . . . . . . . 352--353
Walter Miles When Reading, Your Eyes Move in Jumps 354--356
Anonymous The Romantic Quest of the Iridescent
Pearl . . . . . . . . . . . . . . . . . 357--357
Anonymous A Power Plant Greater than Niagara or
Muscle Shoals . . . . . . . . . . . . . 358--359
Albert A. Hopkins How Death Deals its Cards . . . . . . . 362--363
Anonymous A Sewer as Large as a Three-track Subway 364--364
Anonymous Editorials: Our Point of View . . . . . 412--412
Albert A. Hopkins Novel Devices for the Shop and the Home 442--444
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 446--446
Henry Norris Russell The Heavens in December . . . . . . . . 456--456
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 457--460
Alexander Klemin Learning to Use Our Wings: Learning to
use our Wings . . . . . . . . . . . . . 466--470
Milton Wright Commercial Property News . . . . . . . . 474--475
Anonymous Patents Recently Issued . . . . . . . . 475--477
H. Eltringham The Multiple Eyes of Insects . . . . . . 407--408
Morris Fishbein The Month in Medical Science . . . . . . 409--409
Henry Norris Russell Eclipsing Variables . . . . . . . . . . 410--410
Anonymous Marvelous Crystal Structures from
Cloudland . . . . . . . . . . . . . . . 411--411
Anonymous The Largest Sundial in the World . . . . 413--413
E. Newton Harvey Luminous Bacteria, the Smallest Lamps in
the World . . . . . . . . . . . . . . . 414--416
Anonymous Will You Travel Safely in the United
States? . . . . . . . . . . . . . . . . 417--417
C. P. Burgess New 6,000,000 Cubic-foot Airships for
Our Navy . . . . . . . . . . . . . . . . 418--419
Anonymous A New Tool for the Research Scientist 420--422
Alexander Klemin The \booktitleScientific American
Sport-plane Trophy Race . . . . . . . . 423--423
Orrin E. Dunlap, Jr. Edison Glimpsed at Radio in 1875 . . . . 424--425
P. A. Vaile How Science Can Improve Your Golf . . . 426--427
Elizabeth Banks The Development of Children's Toys . . . 428--429
Anonymous Tools and Household Implements of the
Ancient Egyptians, Preserved by the Dry
Climate, Now Show Us How They Lived . . 430--431
Anonymous How the Nations Will Pay Us their War
Debts . . . . . . . . . . . . . . . . . 432--432
Anonymous Peace-time Medals for Heroism and
Service . . . . . . . . . . . . . . . . 433--433
Ethel W. Musgrave A Flock of Unique Hybrids . . . . . . . 434--434
Anonymous A Violin Played by Mechanical Hands . . 435--435
Anonymous How 50,000,000 Rabbits Furnish Milady's
Furs . . . . . . . . . . . . . . . . . . 436--437
Anonymous The Chimes of Catalina Island . . . . . 438--438
Nell Ray Clarke How Washington's Garbage Pays Dividends 439--439
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 440--441
A. P. Peck Applied science for the Amateur . . . . 463--465
Anonymous In the Editor's Note . . . . . . . . . . 471--473
Anonymous Editorials: Our Point of View . . . . . 12--12
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 26--27
Albert A. Hopkins Novel Devices for the Shop and the Home 42--46
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 47--55
Henry Norris Russell The Heavens in January . . . . . . . . . 59--59
Alexander Klemin Learning to Use Our Wings . . . . . . . 60--64
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 65--68
Anonymous In the Editor's Mail . . . . . . . . . . 69--71
Milton Wright Commercial Property News . . . . . . . . 76--77
Anonymous Patents Recently Issued . . . . . . . . 77--79
Paul R. Heyl Children of the Sun . . . . . . . . . . 7--8
Henry Norris Russell The Romantic Search for ``Pocket''
Planets . . . . . . . . . . . . . . . . 9--9
Walter Franklin Prince Make-believe Telepathy . . . . . . . . . 10--11
G. Elliot Smith The Meaning of the Brain . . . . . . . . 13--16
Milton Wright Inventors Who have Achieved Commercial
Success . . . . . . . . . . . . . . . . 17--17
Edward C. Crossman Science Turns Detective . . . . . . . . 18--21
Charles F. Kettering Applying New ``Yardsticks'' to
Automobiles . . . . . . . . . . . . . . 22--23
A. R. Crook Elephant Hunting in Illinois . . . . . . 24--24
Anonymous Pressed Steel Wheels from I-Beams . . . 25--25
D. H. Killefer Why is a Balloon Tire Efficient? . . . . 28--29
Anonymous A Trip to Boobyland . . . . . . . . . . 30--30
Anonymous Motor Trucks are Aiding Rapid Industrial
Transportation . . . . . . . . . . . . . 31--31
Orrin E. Dunlap, Jr. Radio Along the Airways . . . . . . . . 32--33
J. Bernard Walker Uncle Sam, Spendthrift --- VII . . . . . 34--35
Anonymous Is the Wooden Railroad Tie Doomed? . . . 36--36
Anonymous The Manufacture of Unit Automobile
Bodies . . . . . . . . . . . . . . . . . 37--37
Anonymous Egypt the Mysterious Beckoned the
Tourist 3500 Years Ago . . . . . . . . . 38--39
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 40--41
D. H. Killeffer In the World of Chemistry . . . . . . . 56--56
A. P. Peck Applied Science for the Amateur . . . . 72--72
Anonymous Editorials: Our Point of View . . . . . 92--92
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 96--96
Albert A. Hopkins Novel Devices for the Shop and the Home 118--122
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 123--128
Alexander Klemin Learning to Use Our Wings . . . . . . . 132--136
Henry Norris Russell The Heavens in February . . . . . . . . 136--136
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 137--140
Milton Wright Commercial Property News . . . . . . . . 148--149
Anonymous Patents Recently Issued . . . . . . . . 149--150
B. S. Hopkins Building Blocks of the Universe . . . . 87--89
Anonymous A Sport Over Two Thousand Years Old . . 90--90
Oscar Parkes Japan's New Cruisers . . . . . . . . . . 91--91
Henry Norris Russell Science Plans a Mass Attack on the
Moon's Mysteries . . . . . . . . . . . . 93--93
J. Reid Moir Where was the Birthplace of Mankind? . . 94--95
Anonymous Blind Folks ``See'' Lots of Good Times 97--97
Harold J. Shepstone Buried Secrets of the Holy Land . . . . 98--100
Anonymous Testing a Darn to Destruction . . . . . 101--101
H. W. Brooks The Carbonization of Coal at Low
Temperatures . . . . . . . . . . . . . . 102--104
Milton Wright Inventors who have Achieved Commercial
Success . . . . . . . . . . . . . . . . 105--105
Orrin E. Dunlap, Jr. Radio's Silver Screen . . . . . . . . . 106--107
Anonymous Tire Rejuvenation System Makes Old Tires
New . . . . . . . . . . . . . . . . . . 108--109
Anonymous Pictures of American Climate . . . . . . 109--109
H. H. Mitchell The Straight and Narrow Path to Normal
Weight . . . . . . . . . . . . . . . . . 110--111
Anonymous Two Airplanes Successfully Launched from
a Dirigible . . . . . . . . . . . . . . 112--112
Anonymous The Motor Coach Aids the Railroad . . . 113--113
L. O. Howard A Great Menace --- The Rising Tide of
Insects . . . . . . . . . . . . . . . . 114--115
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 116--117
D. H. Killeffer In the World of Chemistry . . . . . . . 129--130
A. P. Peck Applied Science for the Amateur . . . . 141--143
Anonymous In the Editor's Mail . . . . . . . . . . 144--146
Anonymous Editorials: Our Point of View . . . . . 164--164
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 173--173
Albert A. Hopkins Novel Devices for the Shop and the Home 190--193
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 195--199
Alexander Klemin Learning to Use Our Wings: Learning To
Use Our Wings . . . . . . . . . . . . . 202--208
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 209--214
Henry Norris Russell The Heavens in March . . . . . . . . . . 214--214
Anonymous In the Editor's Mail . . . . . . . . . . 215--217
Anonymous Patents Recently Issued . . . . . . . . 222--223
A. P. Peck The Signal Corps of the 'Movies' . . . . 159--161
Hugh S. Taylor The Simplest Element of All . . . . . . 162--163
Henry Norris Russell Doubtful Newspaper Astronomy . . . . . . 165--165
Heinz Rosenberger Micro Motion-Pictures . . . . . . . . . 166--167
Anonymous How a Great Museum Serves the Public . . 168--169
J. Bernard Walker Uncle Sam, Spendthrift --- VIII . . . . 170--172
Orrin E. Dunlap, Jr. Marconi Strides Onward . . . . . . . . . 174--175
Milton Wright Inventors who have Achieved Commercial
Success . . . . . . . . . . . . . . . . 176--176
Anonymous New Glass Allows Ultra-violet Rays to
Enter the Home . . . . . . . . . . . . . 177--177
J. Bernard Walker Railroad Changes River's Course . . . . 178--179
Harold J. Shepstone Psalmist's Spring to Supply Jerusalem
with Water . . . . . . . . . . . . . . . 180--181
Anonymous How is Your Automobile Radiator Made? 182--183
Anonymous Carl E. Akeley --- Naturalist, Explorer
and Inventor . . . . . . . . . . . . . . 184--185
Lee McCrae Solar Whirlwinds Made Visible . . . . . 186--186
Anonymous Swamps Reclaimed by Weed-cutting
Machines . . . . . . . . . . . . . . . . 187--187
Anonymous New British Tanks, Field Artillery, and
Military Cars with Road Wheels, and with
Tracks for Rough Ground . . . . . . . . 188--189
Anonymous Deep-sea Fish Angle for their Own Kind 194--194
D. H. Killeffer In the World of Chemistry . . . . . . . 200--201
A. P. Peck Applied Science for the Amateur . . . . 218--220
Milton Wright Commercial Property News . . . . . . . . 221--222
Anonymous Editorials: Our Point of View . . . . . 236--236
Albert A. Hopkins Novel Devices for the Shop and the Home 262--266
Albert C. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 267--273
Alexander Klemin Learning to Use Our Wings: Learning to
use Our Wings . . . . . . . . . . . . . 276--282
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 282--286
Anonymous In the Editor's Mail . . . . . . . . . . 286--288
Henry Norris Russell The Heavens in April . . . . . . . . . . 288--288
Milton Wright Commercial Property News . . . . . . . . 292--293
Anonymous Patents Recently Issued . . . . . . . . 293--294
William K. Gregory Missing Links of the Gobi Desert . . . . 231--232
Henry Norris Russell The Next Great Comet is about Due . . . 233--233
David Starr Jordan Fishes that Can Shock You . . . . . . . 234--235
Hugh Hammond Bennett Uncle Sam, Spendthrift --- IX . . . . . 237--239
Morris Fishbein The Month in Medical Science . . . . . . 240--241
Orrin E. Dunlap, Jr. ``Hello, London --- New York Calling'' 242--243
Anonymous ``Metropolis'' --- A Movie Forecast of
the Future . . . . . . . . . . . . . . . 244--245
Edgar Lloyd Hampton Transporting a River Over Mountains . . 246--248
Milton Wright Inventors who have Achieved Commercial
Success . . . . . . . . . . . . . . . . 249--249
Anonymous Twentieth-Century Railroad Building . . 250--251
J. Bernard Walker The Reconstructed Battleship ``Texas'' 252--252
William Allen The Escape of ``Old Ironsides'' . . . . 253--253
Alfred Gradenwitz Sensitive Relays Without Magnets . . . . 254--255
Anonymous Airplane ``Eyes'' Used for Map Making 256--256
Anonymous Huge Lifting Magnets in Industry . . . . 257--257
Anonymous Our Railway Accidents Analyzed . . . . . 258--259
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 260--261
D. H. Killeffer In the World of Chemistry . . . . . . . 274--276
A. P. Peck Applied Science for the Amateur . . . . 289--291
Anonymous Editorials: Our Point of View . . . . . 308--308
Albert A. Hopkins Novel Devices for the Shop and the Home 334--338
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 339--343
Alexander Klemin Learning to Use Our Wings: Learing To
Use our Wings . . . . . . . . . . . . . 344--347
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 350--357
Henry Norris Russell The Heavens in May . . . . . . . . . . . 357--357
Anonymous In the Editor's Mail . . . . . . . . . . 358--360
Milton Wright Commercial Property News . . . . . . . . 364--365
Anonymous Patents Recently Issued . . . . . . . . 365--367
John L. Von Blon Alaska is Mapped from the Air . . . . . 303--305
J. Reid Moir Flint --- Prehistoric Man's Steel . . . 306--307
Henry Norris Russell The Hottest Thing on Earth . . . . . . . 309--309
John Redfield Teaching Music to the Deaf . . . . . . . 310--311
H. M. Towne Measuring One 100,000,000th of a Second 312--314
Morris Fishbein The Month in Medical Science . . . . . . 315--315
Anonymous Golf Clubs from the Forest to the Links 316--317
Orrin E. Dunlap, Jr. Does Static Come from the Sun? . . . . . 318--319
Anonymous Australia Advances --- Her New National
Capital will be Occupied in May . . . . 320--321
George T. Moore Smoke . . . . . . . . . . . . . . . . . 322--323
Austin C. Lescarboura Yardsticks of Sound . . . . . . . . . . 324--326
Milton Wright Inventors Who have Achieved Commercial
Success . . . . . . . . . . . . . . . . 327--327
Anonymous Irrigation Water and Electric Power from
Same Storage Reservoir . . . . . . . . . 328--329
F. T. Humphrey A Serious Plague of Mice in California 330--331
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 332--333
D. H. Killeffer In the World of Chemistry . . . . . . . 348--350
A. P. Peck Applied Science for the Amateur . . . . 361--363
Anonymous Editorials: Our Point of View . . . . . 380--380
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 392--392
Albert A. Hopkins Novel Devices for the Shop and the Home 408--410
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 411--415
Alexander Klemin Learning to Use Our Wings . . . . . . . 416--416
Anonymous In the Editor's Mail . . . . . . . . . . 424--426
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 427--431
Henry Norris Russell The Heavens in June . . . . . . . . . . 431--431
Milton Wright Commercial Property News . . . . . . . . 434--436
Anonymous Patents Recently Issued . . . . . . . . 435--437
T. D. A. Cockerell The Cost of Oranges . . . . . . . . . . 375--377
A. P. Peck Giving a Voice to Motion Pictures . . . 378--379
Henry Norris Russell Three Coming Events . . . . . . . . . . 381--381
Franklin S. Clark Whaling Out of the Golden Gate . . . . . 382--384
Louis S. Treadwell Practical Television Demonstrated . . . 385--385
J. Bernard Walker A Two Hundred Mile-Per-Hour Car . . . . 386--387
H. H. Sheldon Physicist and Golf Expert Still Disagree 388--389
Orrin E. Dunlap, Jr. Radio's New Kingdom . . . . . . . . . . 390--391
Anonymous Shears and Scissors Ninety Percent
Hand-made . . . . . . . . . . . . . . . 393--393
Anonymous Models Show Ancient Egyptian Life and
Industry . . . . . . . . . . . . . . . . 394--394
F. C. Livingstone Turbine Locomotive for British Railroad 395--395
Milton Wright Inventors Who have Achieved Commercial
Success . . . . . . . . . . . . . . . . 396--396
Anonymous Blind Editor Publishes Journal for the
Blind . . . . . . . . . . . . . . . . . 397--397
J. Bernard Walker Uncle Sam, Spendthrift --- X . . . . . . 398--400
Guy E. Mitchell Caves . . . . . . . . . . . . . . . . . 401--403
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Happenings 404--405
John L. Von Blon Sea Elephants Preserved for Posterity 406--407
D. H. Killeffer In the World of Chemistry . . . . . . . 421--423
A. P. Peck Applied Science for the Amateur . . . . 432--433
Anonymous Editorials: Our Point of View . . . . . 17--17
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 18--19
Albert A. Hopkins Household Inventions . . . . . . . . . . 60--61
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 64--68
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 69--71
Alexander Klemin Learning to Use Our Wings . . . . . . . 72--73
Anonymous In the Editor's Mail . . . . . . . . . . 86--88
Henry Norris Russell The Heavens in July . . . . . . . . . . 90--90
Milton Wright Commercial Property News . . . . . . . . 92--93
Anonymous Patents Recently Issued . . . . . . . . 92--95
J. Bernard Walker Super-Guns for Our Army . . . . . . . . 9--13
Russell W. Porter Watching the Earth Turn Over . . . . . . 14--16
Henry Norris Russell Is Mars Habitable? . . . . . . . . . . . 20--21
A. V. Kidder American Farmers of 4000 B.C . . . . . . 22--24
D. T. MacDougal Sunburn in the Dark . . . . . . . . . . 25--27
Anonymous Primitive Irrigation Methods Still
Compete With Modern Machinery . . . . . 28--29
D. H. Killeffer A Microbe in International Affairs . . . 30--32
Milton Wright Successful Inventors --- VII . . . . . . 33--35
Orrin E. Dunlap, Jr. When the President Broadcasts . . . . . 36--38
Anonymous Small Balloons Provide New Sport . . . . 39--39
Charles F. A. Mann America's Longest Tunnel . . . . . . . . 40--42
P. W. Bridgman Stupendous Pressures . . . . . . . . . . 43--45
Anonymous The Wanderings of an Oil Well . . . . . 46--47
George H. Dacy Our Agricultural Ellis Island . . . . . 48--51
D. Moreau Barringer, Jr. The Most Fascinating Spot on Earth . . . 52--54
J. Bernard Walker Uncle Sam, Spendthrift --- XI . . . . . 55--57
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 58--59
Anonymous With the Automotive Inventors . . . . . 62--62
Anonymous Inventions in the Engineering Field . . 63--63
D. H. Killeffer In the World of Chemistry . . . . . . . 74--74
A. P. Peck Applied Science for the Amateur . . . . 78--78
Anonymous Editorials: Our Point of View . . . . . 112--112
Albert A. Hopkins Household Inventions . . . . . . . . . . 157--157
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 160--164
D. H. Killeffer Industries From Atoms: Industries from
Atoms . . . . . . . . . . . . . . . . . 165--166
Alexander Klemin Learning to Use Our Wings: Learning to
Use our Wings . . . . . . . . . . . . . 167--169
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 170--170
Henry Norris Russell The Heavens in August . . . . . . . . . 176--176
Anonymous In the Editor's Mail . . . . . . . . . . 184--187
Milton Wright Commercial Property News . . . . . . . . 188--188
Anonymous Patents Recently Issued . . . . . . . . 188--190
W. J. Humphreys Our Worst Storm, the Tornado . . . . . . 105--107
F. A. Moss and
T. Hunt Are You Socially Intelligent? . . . . . 108--110
Anonymous Novelties in Automotive Transportation 111--111
Anonymous Painting Mile-Long Cable Made Easy . . . 113--113
Harold J. Cook New Trails of Ancient Man . . . . . . . 114--117
Henry Norris Russell Cipher Messages of the Stars . . . . . . 118--119
D. McFarlan Moore Scientifically Designed Golf Clubs . . . 120--122
Anonymous Everyman's Locomotive . . . . . . . . . 123--123
A. V. Hill Are Athletes Machines? . . . . . . . . . 124--126
A. P. Peck Motion Pictures Record Jungle Life . . . 127--129
Anonymous Stone Cast Like Iron . . . . . . . . . . 130--131
Orrin E. Dunlap, Jr. Radio's Goliath . . . . . . . . . . . . 132--133
Arthur Woodward The Conquest of the Everglades . . . . . 134--136
Mandus E. Bridston Fish Elevator Aids Spawning . . . . . . 137--137
Morris Fishbein The Month in Medical Science . . . . . . 138--139
Milton Wright Successful Inventors --- VIII . . . . . 140--142
Anonymous Sky-Painting with ``Light Gun'' . . . . 143--143
D. Moreau Barringer, Jr. The Most Fascinating Spot on Earth ---
II . . . . . . . . . . . . . . . . . . . 144--146
Anonymous Something New in Bridge Building . . . . 147--147
Robert Insley Air-Cooled Engines for Aircraft . . . . 148--151
Anonymous The Camera as an Aid to the Naturalist 152--153
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 154--155
Anonymous Oysters Now Grown on Trees . . . . . . . 156--156
Anonymous Inventions in the Field of Sport . . . . 158--159
A. P. Peck Applied Science for the Amateur . . . . 174--174
Anonymous Editorials: Our Point of View . . . . . 206--206
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 218--219
Anonymous Inventions New and Interesting . . . . . 252--252
Albert A. Hopkins Household Inventions . . . . . . . . . . 253--253
Albert G. Ingalls The \booktitleScientific American
Industrial Digest . . . . . . . . . . . 254--255
Alexander Klemin Learning to Use Our Wings . . . . . . . 256--259
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 260--261
D. H. Killeffer Industries From Atoms: Industries from
Atoms . . . . . . . . . . . . . . . . . 262--262
Henry Norris Russell The Heavens in September . . . . . . . . 274--274
Anonymous In the Editor's Mail . . . . . . . . . . 279--284
Milton Wright Commercial Property News . . . . . . . . 285--285
Anonymous Patents Recently Issued . . . . . . . . 285--290
J. Bernard Walker The Hudson River Vehicular Tunnel . . . 201--203
Richard Paget Bart The Invention of Human Speech . . . . . 204--205
Anonymous Flyer Equipped for High-Altitude Work 207--207
Henry Norris Russell Odd Stars . . . . . . . . . . . . . . . 208--209
Walter Franklin Prince Specimens from the Telepathic Mine . . . 210--213
Anonymous The June 29th Solar Eclipse in England 214--215
Anonymous A Frenchman's Motor Caravan, a Home on
Wheels . . . . . . . . . . . . . . . . . 215--216
Anonymous Power Plant to Generate 1,000,000
Kilowatts . . . . . . . . . . . . . . . 216--217
D. H. Killeffer Ice that Melts to a Gas . . . . . . . . 220--223
Anonymous Building an Airport With Dredges . . . . 223--223
Simon Flexner Sleepy Sickness . . . . . . . . . . . . 224--225
Orrin E. Dunlap, Jr. Why Fly Without Radio? . . . . . . . . . 226--229
Anonymous Sloop Versus Schooner . . . . . . . . . 229--229
William K. Gregory Dawn-Man or Ape? . . . . . . . . . . . . 230--233
Anonymous Extracting Snake Venom for Use in Serums 233--234
A. P. Peck Sounds Recorded on ``Movie'' Film . . . 234--237
Anonymous World's Largest Artificial Lake . . . . 237--238
Ernest Flagg The City of the Future . . . . . . . . . 238--241
Milton Wright Successful Inventors --- IX . . . . . . 242--244
D. Moreau Barringer, Jr. The Most Fascinating Spot on Earth ---
III . . . . . . . . . . . . . . . . . . 244--247
Lewis Hobart Kenney What Determines Rowing Speed? . . . . . 247--249
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 250--251
A. P. Peck Applied Science for the Amateur . . . . 264--274
Anonymous Editorials: Our Point of View . . . . . 304--304
Albert A. Hopkins Household Inventions . . . . . . . . . . 343--343
Anonymous Inventions New and Interesting . . . . . 344--344
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 345--349
D. H. Killeffer Industries From Atoms: Industries from
Atoms . . . . . . . . . . . . . . . . . 350--350
Alexander Klemin Learning to Use Our Wings: Learning to
use our Wings . . . . . . . . . . . . . 352--353
Orrin E. Dunlap, Jr. Radio Notes . . . . . . . . . . . . . . 356--362
Henry Norris Russell The Heavens in October . . . . . . . . . 362--362
Anonymous In the Editor's Mail . . . . . . . . . . 372--377
Milton Wright Commercial Property News . . . . . . . . 379--379
Anonymous Patents Recently Issued . . . . . . . . 379--382
Horace D. Ashton Troglodytes of the Desert . . . . . . . 297--299
David Starr Jordan Mikimoto and the Culture Pearl . . . . . 300--302
Anonymous A Modern Man-Made Gave . . . . . . . . . 303--303
Anonymous New Radio Aid to Aircraft Pilots . . . . 305--305
J. Bernard Walker Placing Staten Island on the Map . . . . 306--308
S. R. Williams On the Trail of the Molecule --- I . . . 309--311
Henry Norris Russell Four Sunless Worlds . . . . . . . . . . 312--313
Morris Fishbein The Month in Medical Science . . . . . . 314--315
W. W. Coblentz Cold Light . . . . . . . . . . . . . . . 316--317
Anonymous In the Workshop of the Scientists . . . 318--319
Orrin E. Dunlap, Jr. A Radio Pioneer Steps Onward . . . . . . 320--322
Anonymous Out of the Silence Comes a Voice . . . . 323--323
Martha Miller Bliven Africa . . . . . . . . . . . . . . . . . 324--327
Milton Wright Successful Inventors --- X . . . . . . . 328--329
E. H. Lockwood 400,000,000 Horsepower! . . . . . . . . 330--332
Anonymous Piano Instruction aided Electrically . . 333--334
Ernest Flagg The City of the Future --- II . . . . . 335--337
Anonymous Speeding up the Moffat Tunnel . . . . . 338--339
Anonymous From the Scrap-book of Science . . . . . 340--341
Anonymous Outward Bound on the ``Ile de France'' 342--342
A. P. Peck Applied Science for the Amateur . . . . 354--355
Anonymous Editorials: Our Point of View . . . . . 400--400
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 428--429
Anonymous Inventions New and Interesting . . . . . 438--439
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 441--443
Alexander Klemin Learning to Use Our Wings . . . . . . . 444--444
Anonymous In the Editor's Mail . . . . . . . . . . 468--471
Henry Norris Russell The Heavens in November . . . . . . . . 475--475
Milton Wright Commercial Property News . . . . . . . . 477--477
Anonymous Patents Recently Issued . . . . . . . . 477--480
Harold J. Shepstone Head Hunters of Burma . . . . . . . . . 393--396
Paul R. Heyl Muscles Built the Pyramids . . . . . . . 396--398
Anonymous Motor-bus Transportation De Luxe . . . . 399--399
Anonymous World Events from Flashing Sign . . . . 401--401
Henry Norris Russell ``How do they Know'' . . . . . . . . . . 402--403
W. E. Bailey Evolution of the Human Eye . . . . . . . 404--406
Anonymous Safety at Sea . . . . . . . . . . . . . 407--408
Anonymous Nobility at Work . . . . . . . . . . . . 408--409
J. Bernard Walker Building for the Ages . . . . . . . . . 410--413
Milton Wright Successful Inventors --- XI . . . . . . 414--415
Leon Augustus Hausman Conservation or Extinction? . . . . . . 416--417
Anonymous A Monumental Bridge . . . . . . . . . . 418--420
Russell W. Porter A Simple Study in Optics . . . . . . . . 421--421
Anonymous Recording the Soul of Piano Playing . . 422--423
Orrin E. Dunlap, Jr. What is New in Radio . . . . . . . . . . 424--426
Anonymous Life-boats Made Safer . . . . . . . . . 427--427
H. Austin Taylor New Lights for Old . . . . . . . . . . . 430--432
S. R. Williams On the Trail of the Molecule --- II . . 433--435
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 436--437
Albert A. Hopkins Culinary Inventions . . . . . . . . . . 440--440
D. H. Killeffer Industries from Atoms . . . . . . . . . 446--447
A. P. Peck Applied Science for the Amateur . . . . 448--448
Orrin E. Dunlap, Jr. Strays from the Ether . . . . . . . . . 450--468
Anonymous Editorials: Our Point of View . . . . . 496--496
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 520--521
Albert A. Hopkins Inventions New and Interesting . . . . . 532--533
Anonymous Household Inventions . . . . . . . . . . 534--534
Albert G. Ingalls \booktitleScientific American Digest:
The \booktitleScientific American Digest 535--538
Alexander Klemin Learning to Use Our Wings: Learning to
use our Wings . . . . . . . . . . . . . 539--540
D. H. Killeffer Industries From Atoms: Industries from
Atoms . . . . . . . . . . . . . . . . . 541--542
Orrin E. Dunlap, Jr. Strays From the Ether: Strays from the
Ether . . . . . . . . . . . . . . . . . 546--548
Anonymous In the Editor's Mail . . . . . . . . . . 554--557
Henry Norris Russell The Heavens in December . . . . . . . . 558--558
Milton Wright Commercial Property News . . . . . . . . 569--569
Anonymous Patents Recently Issued . . . . . . . . 569--572
E. H. Wilcox Lightning Prevention . . . . . . . . . . 489--492
L. H. Dudley Buxton Pre-Sumerian Man . . . . . . . . . . . . 493--495
S. R. Winters Life-Saving Airplanes . . . . . . . . . 497--499
Orrin E. Dunlap, Jr. The Giant of Broadcasting . . . . . . . 500--502
Anonymous Great Britain's Mechanised Army . . . . 503--503
H. J. Lutz How Nature Conquers . . . . . . . . . . 504--505
Henry Norris Russell The Stars of the Manger . . . . . . . . 506--507
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 508--509
Charles F. A. Mann Water --- the Modern Aladdin . . . . . . 510--512
Milton Wright Successful Inventors --- XII . . . . . . 513--515
Anonymous The ``Movie'' Theater up-to-Date . . . . 516--517
Anonymous Scandinavian Six-meter Yachts Win . . . 518--518
Anonymous The New Modern Foundry Arrives . . . . . 519--519
C. Bond Lloyd Which foot supports a Golfer's Weight? 522--523
Robert H. Gault Learning Language by its Feel . . . . . 524--525
J. Bernard Walker The Post-War Navies . . . . . . . . . . 526--528
Anonymous Miracles Made to Order . . . . . . . . . 529--529
Anonymous ``Old Ironsides'' in Dry Dock . . . . . 530--530
Harold Bastin Do Insects feel Pain? . . . . . . . . . 531--531
A. P. Peck Applied Science for the Amateur . . . . 543--545
Anonymous Index to Volume 137 --- July--December,
1927 . . . . . . . . . . . . . . . . . . 574--575
Anonymous Editorials: Our Point of View . . . . . 16--17
Morris Fishbein Medical Science: A New Automatic Blood
Pressure Instrument, Disease of the
Joints, and more . . . . . . . . . . . . 38--39
Albert A. Hopkins Inventions New and Interesting:
Typewriter Copy Guide, Bird Bath Lawn
Sprinkler, and more . . . . . . . . . . 52--53
Anonymous Household Inventions: Washing Bench,
Bottle Cork with Spray Nozzile, and more 54--54
Albert G. Ingalls \booktitleScientific American Digest:
Roller Bearings End Jerking to Start
Trains, Is the ``January Thaw'' a
Scientific Fact?, and more . . . . . . . 55--60
Alexander Klemin Learning to Use Our Wings: Spring Safety
Stick, ``Time of Flight'' Clock, and
more . . . . . . . . . . . . . . . . . . 61--63
Orrin E. Dunlap, Jr. Strays From the Ether: High Speed
Attained by Marconi Beam, Battery
Receivers can be Electrified, and more 64--66
D. H. Killeffer Industries From Atoms: A New Lead
Hazard, Wood Pulp Shot from Guns, and
more . . . . . . . . . . . . . . . . . . 70--73
Henry Norris Russell The Heavens in January . . . . . . . . . 74--76
Anonymous In the Editor's Mail: Partners Make
Telescope, Speaking of the Weather, and
more . . . . . . . . . . . . . . . . . . 78--83
Milton Wright Commercial Property News: Bringing
Inventors and Manufacturers Together,
Mere Substitution is not Invention, and
more . . . . . . . . . . . . . . . . . . 91--98
Herbert J. Spinden Ancient Mayan Astronomy . . . . . . . . 9--12
George O. Noville Crash . . . . . . . . . . . . . . . . . 13--15
William Seifriz How Do the Life Processes Work . . . . . 18--21
Anonymous From the Scrap-book of Science- Camera
Shots of Scientific Events Camera Shots
of Scientific Events . . . . . . . . . . 22--23
Orrin E. Dunlap, Jr. Marconi Smiles on America . . . . . . . 24--25
Henry Norris Russell A Scientific Ghost Laid . . . . . . . . 26--27
Milton Wright Successful Inventors --- XIII . . . . . 28--29
Anonymous Cricket Champions of China . . . . . . . 30--34
Anonymous Underground Canal an Engineering Feat 35--35
W. J. Humphreys The Atmosphere . . . . . . . . . . . . . 36--37
Anonymous Plate Glass by the Mile . . . . . . . . 40--41
M. Luckiesh Future Light . . . . . . . . . . . . . . 42--43
Anonymous Will the Steam Automobile Return . . . . 44--45
Anonymous Tropical Telescope Making . . . . . . . 46--47
Anonymous The Origin of Cork Products . . . . . . 48--48
Cyrus N. Ray The Red Hill Artifacts . . . . . . . . . 49--49
Anonymous ``Mountain Climbing'' by Air Cable . . . 50--50
Charles F. A. Mann ``Pay-As-You-Use-It'' . . . . . . . . . 51--51
A. P. Peck A Simulated ``Aura'', An Indoor Tractor
Model Plane, and more . . . . . . . . . 67--69
Anonymous Editorials: Our Point of View . . . . . 112--113
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 128--129
Albert A. Hopkins Household Inventions: Thermal
Refrigeration, Automatic Electric Range,
and more . . . . . . . . . . . . . . . . 154--155
Anonymous Inventions New and Interesting: Rainy
Day Splash Guards, Metal Tobacco Pouch,
and more . . . . . . . . . . . . . . . . 156--156
Albert G. Ingalls \booktitleScientific American Digest:
Telephotographs Used Mostly by Business
Men, California Steam Wells Examined by
Scientists, and more . . . . . . . . . . 157--159
Alexander Klemin Learning to Use Our Wings: Playing with
the Airstream, Astronomical Navigation,
and more . . . . . . . . . . . . . . . . 160--161
D. H. Killeffer Industries From Atoms: Preventing Lime
Deposits in Water Mains, New Solders
Suggested, and more . . . . . . . . . . 162--162
Orrin E. Dunlap, Jr. Strays From the Ether: Antenna Pointers,
Beethoven Popular with Radio Owners, and
more . . . . . . . . . . . . . . . . . . 164--164
Anonymous Industries From Atoms: Hydroelectric
Fuel, Electrolytic Zinc in France, and
more . . . . . . . . . . . . . . . . . . 170--172
Henry Norris Russell The Heavens in February . . . . . . . . 172--172
Anonymous Strays From the Ether: A Fading Dream,
Does Cone Loudspeaker Need Wide
Surface?, and more . . . . . . . . . . . 173--175
Anonymous In the Editor's Mail: Two More Amateur's
Telescopes, Race-track Problem Attracts
Wide Attention, and more . . . . . . . . 176--179
Anonymous \booktitleScientific American Digest:
Airship Gas Source Seen in Atmosphere,
New Method of Clay Pipe Manufacture, and
more . . . . . . . . . . . . . . . . . . 180--182
Milton Wright Commercial Property News: The Patent
Office is Falling Behind, Carpenters and
Free Masons, and more . . . . . . . . . 187--191
T. H. (``Doc'') Kinkade Tuning Up Transatlantic Motors . . . . . 105--107
Herbert J. Spinden In Quest of Ruined Cities . . . . . . . 108--111
Josephine E. Tilden Our Richest Source of Vitamins . . . . . 114--117
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 118--119
Henry Norris Russell Has the Universe a Limit? . . . . . . . 120--121
Charles W. Geiger America's Greatest Water-wheel . . . . . 122--124
Anonymous A Crusader's Fortress Excavated . . . . 125--127
Paul Griswold Howes The Much Maligned Bat . . . . . . . . . 130--131
Anonymous Oil Tanks Moved by Floating . . . . . . 132--132
Anonymous Filling in the Zuyder Zee . . . . . . . 133--133
Milton Wright Successful Inventors --- XIV . . . . . . 134--135
D. H. Killeffer ``Hot Dogs'' de Luxe . . . . . . . . . . 136--137
James Millen Weighing with Radio . . . . . . . . . . 138--139
F. D. McHugh Faster Motor Boats . . . . . . . . . . . 140--140
Anonymous Machine Makes Million Bottles a Week . . 141--141
Orrin E. Dunlap, Jr. The Index to Radio's Future . . . . . . 142--143
J. Bernard Walker Curbing the Mississippi . . . . . . . . 144--146
Anonymous The Sewers of Paris . . . . . . . . . . 147--147
Nell Ray Clarke Uncle Sam Raises Bugs . . . . . . . . . 148--150
Bailey Willis Growing Mountains . . . . . . . . . . . 151--153
Anonymous Editorials: Our Point of View . . . . . 208--209
Morris Fishbein and
M. D Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 230--231
Albert A. Hopkins Inventions New and Interesting:
Porcelain Socket, New Pullman Bag, and
more . . . . . . . . . . . . . . . . . . 250--250
Anonymous Household Inventions: Safety Jug,
Polishing Mitten, and more . . . . . . . 251--251
Albert G. Ingalls \booktitleScientific American Digest:
Biologist Calls Coffee Beneficial
Beverage, Swapping Cactus for Pineapple,
and more . . . . . . . . . . . . . . . . 252--256
Alexander Klemin Learning to Use Our Wings: Large Plane
Orders, Ingenious Wing Folding, and more 257--260
D. H. Killeffer Industries From Atoms: Potash from the
Dead Sea, Distilled Water by
Electrolysis, and more . . . . . . . . . 261--264
Orrin E. Dunlap, Jr. Strays From the Ether: New Power Tube
has Economical Filament, Reflectors are
Efficient, and more . . . . . . . . . . 268--272
Anonymous Industries From Atoms: Ferric Hydroxide
as an Adsorbent, Hydrogen Ion
Concentration of Cheese, and more . . . 273--273
Anonymous In the Editor's Mail: England's First
Bicycle, From the Candle to Electricity,
and more . . . . . . . . . . . . . . . . 274--277
Anonymous \booktitleScientific American Digest:
Evolution Reversed by Cornell Scientist,
Sheet Steel Manufacture, and more . . . 278--281
Milton Wright Commercial Property News: Analogous
Arts, Trademarks in The Philippines, and
more . . . . . . . . . . . . . . . . . . 283--287
R. W. Wood Sounds that Burn . . . . . . . . . . . . 201--204
Paul R. Heyl Weighing the Earth . . . . . . . . . . . 205--207
Edward C. Schmidt High-Pressure Steam in Locomotives . . . 210--213
Anonymous From the Scrap-book of Science Camera
Shots of Scientific Events . . . . . . . 214--215
D. C. Davies Unearthing the Past at Kish . . . . . . 216--218
John T. Rowland The ``Why'' of the ``S-4'' Disaster . . 219--221
Anonymous A Smaller, Light-Weight Diesel . . . . . 222--223
Henry Norris Russell Comets . . . . . . . . . . . . . . . . . 224--225
Walter Miles How Fast Can You ``Get Away''? . . . . . 226--229
Herbert J. Spinden Deciphering Mayan Mysteries . . . . . . 232--234
Frank Thone New Discovery Speeds Up Evolution . . . 235--235
Albert A. Hopkins A Modern Castle of Business . . . . . . 236--238
T. H. (``Doc'') Kinkade Tuning-Up Transatlantic Motors --- II 239--241
Orrin E. Dunlap, Jr. Wanted --- A Radio Fan's Paradise . . . 242--243
Anonymous California Amateurs Make Telescopes . . 244--245
A. P. Peck Television Enters the Home . . . . . . . 246--248
Oliver M. Sayler Theater Delays Shortened . . . . . . . . 249--249
A. P. Peck Outdoor Tractor Model Airplane,
Golf-Ball Marking, and more . . . . . . 266--267
Anonymous Editorials: Our Point of View . . . . . 304--305
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 328--329
Anonymous Inventions New and Interesting: Pocket
Ash Tray, Stored Heat Bag, and more . . 346--346
Anonymous \booktitleScientific American Digest:
Note for Telescope Enthusiasts, Diesel
Ship Tests Show Good Results, and more 348--352
Alexander Klemin Learning to Use Our Wings: ``Los
Angeles'' Lands on ``Saratoga'',
Architecture and Airport, and more . . . 354--356
Anonymous Industries From Atoms: Synthetic
Ammonia, Baffling the Bootlegger by
Catalysis, and more . . . . . . . . . . 358--359
Anonymous Strays From the Ether: Transmitting
License Fee Proposed, Aviation and
Radio, and more . . . . . . . . . . . . 362--368
Anonymous Industries From Atoms: Compressed Gas as
Motor Fuel, Celluloid-Rubber Nuptials,
and more . . . . . . . . . . . . . . . . 372--374
Anonymous Learning to Use Our Wings: Imperial
Airways . . . . . . . . . . . . . . . . 378--378
Anonymous Commercial Property News: The Turnover
in Toast, Where Registration is
Obligatory, and more . . . . . . . . . . 379--383
David Starr Jordan Sharks . . . . . . . . . . . . . . . . . 297--300
Ernest O. Lawrence and
J. W. Beams What is Light? . . . . . . . . . . . . . 301--303
Bailey Willis World Earthquake Belts . . . . . . . . . 306--309
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 310--311
J. Reid Moir New Evidences of Ancient Man . . . . . . 312--313
Howard McLellan Japanese Bank Defies Attack . . . . . . 314--316
Anonymous Comfort in Sleeping Cars . . . . . . . . 317--317
Anonymous Hydraulic Control of Machine Tools . . . 318--319
Milton Wright An Inventor Finds Work is Play . . . . . 320--321
Henry Norris Russel How Old is the Earth? . . . . . . . . . 322--323
Anonymous Panama Canal Needs More Water . . . . . 324--325
Anonymous Herculaneum is Being Freed from her
Mantle of Mud . . . . . . . . . . . . . 326--327
Herbert J. Spinden Thank the American Indian . . . . . . . 330--332
Anonymous A Mountain that Will Fall . . . . . . . 333--333
Anonymous ``R-100'', Latest British Airliner . . . 335--335
Anonymous Safety on our Highways . . . . . . . . . 336--337
Anonymous Simplified Photo-Radio Transmission . . 338--338
Anonymous Co-ordinated Ear and Eye Music . . . . . 339--339
G. H. Estabrooks Facts About Hypnotism . . . . . . . . . 340--341
E. F. Bacon and
John W. Wagner Where Perpetual Winter Reigns . . . . . 342--344
Anonymous Motorcycles Go to War . . . . . . . . . 345--345
Anonymous Lawn Shaver, Powerful Pruner, and more 347--347
Anonymous To Polish Small Tubing, Our Readers
Contribute, and more . . . . . . . . . . 360--361
Anonymous Editorials: Our Point of View . . . . . 400--401
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 424--425
Anonymous Inventions New and Interesting: Camper's
Knife, Eye-Comfort Cards, and more . . . 441--441
Anonymous \booktitleScientific American Digest:
Making Fiber Board from Wood Chips, An
Electric Bug House, and more . . . . . . 442--445
Alexander Klemin Learning to Use Our Wings: A Circular
Airport, ``Air Service, American
Expeditionary Force'', and more . . . . 446--447
Anonymous The Back Yard Astronomer . . . . . . . . 448--448
Anonymous Industries From Atoms: Chemists Still
Fail to Rival Rubber Tree, Moth-Proofing
Fabrics, and more . . . . . . . . . . . 450--453
Anonymous Strays From the Ether: Radio Patents
Before Marconi, Light-socket Aerials,
and more . . . . . . . . . . . . . . . . 454--457
Henry Norris Russell The Heavens in May . . . . . . . . . . . 468--468
Anonymous Commercial Property News: British
Patents in the United States Navy,
Unused Patents Will be Strictly
Construed, and more . . . . . . . . . . 475--479
P. Ormsby Lennon Mining Your Fountain Pen Tips . . . . . 393--396
James Henry Breasted Recovering New History . . . . . . . . . 397--399
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 402--403
W. F. G. Swann The Earth as a Magnet . . . . . . . . . 404--408
E. L. Chicanot New ``Eyes'' for the Sealing Fleet . . . 409--411
Henry Norris Russell Another Astronomical Puzzle Solved . . . 412--413
A. S. Eve and
D. A. Keys Geophysical Prospecting . . . . . . . . 414--417
Anonymous Archery --- The New-Old Sport . . . . . 418--419
Anonymous One-piece Automobile Bodies . . . . . . 420--420
Anonymous Speed Demons . . . . . . . . . . . . . . 421--421
J. Bernard Walker World's Largest Vehicular Tunnel . . . . 422--423
J. Reid Moir Where Nature Imitates Man . . . . . . . 426--427
Richard Rickard Carryl On the Road to Anywhere . . . . . . . . 428--429
Frank Wigglesworth Clarkexo The Significance of Meteorites . . . . . 430--432
Anonymous A Business Man Turns Explorer . . . . . 432--433
F. D. McHugh Pulverized Coal Goes to Sea . . . . . . 434--436
Anonymous Marvels of Lamp and Tube Manufacture . . 436--437
Uthai Vincent Wilcox Rattlesnake Farming . . . . . . . . . . 438--439
Anonymous Driving Practice, Golf Club Press, and
more . . . . . . . . . . . . . . . . . . 440--440
Anonymous Model Plane that Runs on Compressed Air,
Apparatus for High-Frequency Experiments 458--460
Anonymous Lacquer Solvents, New Sources of
Cellulose, and more . . . . . . . . . . 464--468
Anonymous Editorials: Our Point of View . . . . . 496--497
Anonymous Household Inventions: Dust Receiver,
Safety Oven Shelf, and More . . . . . . 536--536
Anonymous Inventions: Bumper Lights, Traffic Cop
Stop Signal, and More . . . . . . . . . 537--537
Anonymous \booktitleScientific American Digest:
Horn Operates Traffic Lights, A River of
Mud, and more . . . . . . . . . . . . . 538--543
Anonymous Strays From the Ether: Wooden
Loudspeaker Horns Return, Sun Affects
Wave Routes, and more . . . . . . . . . 544--545
Alexander Klemin Learning to Use Our Wings: Airship
Design and Fallacies, A Hydro-glider,
and more . . . . . . . . . . . . . . . . 546--551
Anonymous Industries From Atoms: Mill Waste for
Mosquito Control, Dangers in Dust,
Rust-proofing With Phosphates, and more 552--555
Anonymous The Back Yard Astronomer . . . . . . . . 556--556
Anonymous Industries From Atoms: Methanol from
Wood Distillation, Ubiquitous Sand, and
more . . . . . . . . . . . . . . . . . . 557--561
Henry Norris Russell The Heavens in June . . . . . . . . . . 562--562
Anonymous \booktitleScientific American Digest:
Another ``Smallest'' Electric Motor,
Largest Roller Bearings in the World,
and more . . . . . . . . . . . . . . . . 563--569
Anonymous Commercial Property News: Eskimo Pies
are Old, Saved by a Crow, and more . . . 570--572
Irving Brant Forest Lookouts Defy Lightning . . . . . 489--492
M. Luckiesh Men, Atoms, and Stars . . . . . . . . . 493--495
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 498--499
Thomas Gann Slowly the Past Emerges . . . . . . . . 500--501
Anonymous The Invincible March of the Automobile 502--502
A. Hyatt Verrill Who are the Mysterious Bearded Indians? 503--505
Morris Fishbein The Month in Medical Science . . . . . . 506--507
A. S. Eve and
D. A. Keys Geophysical Prospecting . . . . . . . . 508--511
Henry Norris Russell Sun-spots in Weather Prediction . . . . 512--513
Milton Wright A Business that Lives by Invention . . . 514--516
Leon Legrain Unearthing History at Ur . . . . . . . . 517--519
Charles W. Geiger Why the St. Francis Dam Collapsed . . . 520--522
Anonymous Robinson Crusoes of Science . . . . . . 523--523
Ernest G. Linder Where does Matter Come From? . . . . . . 524--525
L. A. Huguemont Paintings that Shine in Dark . . . . . . 526--527
F. D. McHugh Roller Bearings Smooth the Traveler's
Road . . . . . . . . . . . . . . . . . . 528--529
J. Reid Moir Making Flint Implements . . . . . . . . 530--531
Jack W. Jareo Chemicals Destroy Lake Weeds . . . . . . 532--533
Anonymous Industry Depends on Scientific Research 534--535
Anonymous Editorials: Our Point of View . . . . . 14--15
Anonymous Household Inventions: Detachable
Wringer, Dish Washer, and more . . . . . 57--57
Anonymous Inventions New and Interesting:
Track-Laying Barrow, Hack-saw for Sheet
Metal, and more . . . . . . . . . . . . 58--59
Anonymous \booktitleScientific American Digest:
Visualizing Atomic Structures, Tall
Buildings Protect Neighbors From
Lightning, and more . . . . . . . . . . 64--67
Anonymous Learning to Use Our Wings: The Keystone
``Pirate'', Airship Hangars, and more 68--69
Anonymous Industries From Atoms: Removing
Bootblack Stains, Oxygen Used to Fight
Pneumonia, and more . . . . . . . . . . 70--72
Anonymous The Back Yard Astronomer . . . . . . . . 74--74
Anonymous Strays From the Ether: Perfect Reception
in Hawaii, Custom-built Sets, and more 76--79
Henry Norris Russell The Heavens in July . . . . . . . . . . 84--84
Anonymous Commercial Property News: A Design is
not a Product, Patents in Soviet Russia,
and more . . . . . . . . . . . . . . . . 91--95
Paul R. Heyl What is an Atom? . . . . . . . . . . . . 9--12
Anonymous Towing Tests Solve Ship-power Problems 13--13
D. T. MacDougal Can We Grow Our Own Rubber? . . . . . . 16--19
J. Bernard Walker A Mammoth Railroad Fill . . . . . . . . 20--21
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 22--23
Henry Norris Russell Problems of Solar Research . . . . . . . 24--25
J. Reid Moir Man's First Mechanical Achievement . . . 26--27
E. L. Chicanot Muskrats to Order . . . . . . . . . . . 28--30
Edward W. Berry How Old are the Everlasting Hills? . . . 31--33
Robert W. Griffith Unhairing Hides . . . . . . . . . . . . 34--35
Anonymous Where the Forest Meets the Laboratory 36--37
Harold J. Cook Glacial Age Man in New Mexico . . . . . 38--40
Anonymous How the Weather Man Outreaches the
Airplane . . . . . . . . . . . . . . . . 41--41
Chas. P. Olivier The Great Siberian Meteorite . . . . . . 42--44
Albert G. Ingalls A Miniature Meteor Crater . . . . . . . 45--45
Guy Kelsey Traffic Regulation . . . . . . . . . . . 46--48
Morris Fishbein The Month in Medical Science . . . . . . 49--49
A. Hyatt Verrill Who are the Mysterious Bearded Indians?
--- II . . . . . . . . . . . . . . . . . 50--52
Anonymous ``Movie'' Illusions --- Their Creation 53--53
F. D. McHugh Is Concrete Better than Cross-ties? . . 54--55
Anonymous Folding Boat, Automatic Bilge Pump, and
more . . . . . . . . . . . . . . . . . . 56--56
Herbert Otis Warren California's First Oil Well is Still
Producing . . . . . . . . . . . . . . . 60--61
Anonymous London's New Post-office Subway . . . . 62--62
A. P. Peck ``Passing Boulogne!'' . . . . . . . . . 63--64
Anonymous Editorials: Our Point of View . . . . . 108--109
Morris Fishbein Medical Science: The Month In Medical
Science . . . . . . . . . . . . . . . . 126--127
Anonymous Inventions for the Household: Can
Opener, Wooden Candles, and more . . . . 153--153
Anonymous Inventions New and Interesting:
Self-Winding Watch, Coin-Slot Golf Game,
and More . . . . . . . . . . . . . . . . 154--155
Anonymous \booktitleScientific American Digest:
Similar Birthmarks in Five Generations,
Motion-Picture Photomicrography
Simplified, and more . . . . . . . . . . 156--159
Anonymous Learning to Use Our Wings: Flight
Without Power, Towing Gliders, and more 160--162
Anonymous Industries From Atoms: Accelerated Test
of Paint Checks Exposure, Uncle Sam
Extends Helium Production, and more . . 164--166
Anonymous Strays From the Ether: Oil-Cooled Tubes,
Amateur Regulations, and more . . . . . 168--171
Anonymous The Back Yard Astronomer . . . . . . . . 172--172
Henry Norris Russell The Heavens in August . . . . . . . . . 176--176
Anonymous Commercial Property News: Safety Pins,
Exporters Beware, and more . . . . . . . 187--191
Walter E. Burton Bird Secrets Revealed By Bracelets . . . 105--107
Anonymous From the Scrap-book of Science ---
Camera Shots of Scientific Events . . . 110--111
G. Elliot Smith Neanderthal Man Not Our Ancestor . . . . 112--115
Zane Grey Big Game Fishing in New Zealand Seas . . 116--118
Anonymous Giving Scales a Variety of Jobs . . . . 119--119
Henry Norris Russell What Becomes of the Starlight? . . . . . 120--121
Milton Wright Farming Under Paper . . . . . . . . . . 122--124
Anonymous Priest--Professor Conducts Daring
Exploration . . . . . . . . . . . . . . 125--125
A. G. Cherry Conowingo --- Huge Hydroelectric Plant 128--130
Anonymous The ``Lunch Wagon'' Modernized . . . . . 131--131
George A. Wallis Who Were the Prehistoric Mimbrenos of
New Mexico? . . . . . . . . . . . . . . 132--133
Milton Wright The Story of the Shade Roller . . . . . 134--135
R. A. Millikan and
G. Harvey Cameron The Origin of the Cosmic Ray . . . . . . 136--137
Anonymous Date Growing in the United States . . . 138--139
James R. Randolph Can We Go To Mars? . . . . . . . . . . . 140--142
Anonymous Burning Steel to Form Machine Parts . . 143--143
W. F. G. Swann Three Centuries of Natural Philosophy 144--147
Anonymous Enter Chromium Plating . . . . . . . . . 148--149
Russell W. Porter Sun Dials and Sun Dialling . . . . . . . 150--152
Anonymous Editorials: Our Point of View . . . . . 204--205
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 218--219
Anonymous Household Inventions: Apple Corer,
Out-of-the-Way Rack, and more . . . . . 251--251
Anonymous Inventions New and Interesting: Tennis
Ball Re-Napper, Portable Motor-Driven
Air Pump, and more . . . . . . . . . . . 252--253
Anonymous \booktitleScientific American Digest:
All Welded Gas Holder, Radium Rays Test
Flaws In Castings, and more . . . . . . 254--257
Alexander Klemin Learning to Use Our Wings: A Net of
Weather Stations, The Bellanca
Sesquiplane, and more . . . . . . . . . 258--260
Anonymous Industries From Atoms: The Chemistry of
Faded Colors, Causes of Defects in
Canned Foods, and more . . . . . . . . . 262--264
Anonymous Strays From the Ether: Instrument Tests
Radio Reproducers, Grid-Suppressor
Value, and more . . . . . . . . . . . . 266--269
Anonymous The Back Yard Astronomer . . . . . . . . 270--270
Henry Norris Russell The Heavens in September . . . . . . . . 278--278
Anonymous Commercial Property News: Hooks and
Eyes, The Crowded Art of Slot Machines,
and more . . . . . . . . . . . . . . . . 284--287
Anonymous Recently Patented Inventions: Patents
Recently Issued . . . . . . . . . . . . 285--285
Clark Wissler Among the ``Blacks'' of Western
Australia . . . . . . . . . . . . . . . 201--203
Anonymous From the Scrap-Book of Science . . . . . 206--207
W. F. G. Swann Three Centuries of Natural Philosophy 208--211
Henry Norris Russell Animating Jupiter . . . . . . . . . . . 212--213
E. T. Scott Taming a Turbulent Torrent . . . . . . . 214--216
Anonymous Byrd's Proposed Antarctic Route . . . . 217--217
N. H. Goss Naval Adequacy --- I . . . . . . . . . . 220--224
Charles H. Sternberg Extinct Animals of California . . . . . 225--227
Anonymous When Art Replaces Ugliness . . . . . . . 228--230
Milton Wright Rocking Again the Cradle of Flight . . . 231--233
Anonymous In the World's Largest Hotel . . . . . . 234--234
Anonymous Drafting Aids . . . . . . . . . . . . . 235--235
Elihu Thomson Rendering Visible a Magnetic Field . . . 236--239
James Stokley Three Years Abaft the Mast . . . . . . . 240--243
Frank Byers The Economics of Dirt Farming . . . . . 244--247
Lloyd Llewellyn The Caisson Slipped . . . . . . . . . . 248--250
Anonymous Editorials: Our Point of View . . . . . 301--301
Anonymous Inventions for the Household: Salt and
Pepper Shaker, Indoor Folding Clothes
Rack, and more . . . . . . . . . . . . . 346--347
Anonymous Inventions New and Interesting: All
Metal Guitars, Marcel Waver, and more 348--349
Anonymous \booktitleScientific American Digest:
Lincoln Highway Signed with Concrete
Posts, Locomotive Has Front End Cab, and
more . . . . . . . . . . . . . . . . . . 350--352
Alexander Klemin Learning to Use Our Wings:
Intercollegiate Flying Contests,
Popularizing the Glider, and more . . . 354--356
Anonymous Strays From the Ether: Movies by Radio,
Sweden Heads Europe With 53.6 Radio Sets
to Every 1000 People, and more . . . . . 358--360
Anonymous Industries From Atoms: Asphalt Emulsion
for Curing Concrete, Electro-Plating on
Aluminum, and more . . . . . . . . . . . 362--365
Anonymous The Back Yard Astronomer . . . . . . . . 366--367
Henry Norris Russell The Heavens in October . . . . . . . . . 370--370
Anonymous Commercial Property News: Good to the
Last Bite, The Fountain Pen Invention,
and more . . . . . . . . . . . . . . . . 378--383
C. J. Warden The World of the Dog . . . . . . . . . . 297--299
Anonymous Why the Moon is Apparently Ahead of Its
Computed Position . . . . . . . . . . . 300--300
Anonymous From the Scrap-book of Science . . . . . 302--303
F. D. McHugh Youth Hankers to Fly . . . . . . . . . . 304--307
Henry Norris Russell World Astronomers Meet . . . . . . . . . 308--309
Clyde R. Keith New Languages from Old . . . . . . . . . 310--311
Tassilo Adam The Kubu Forestmen of Sumatra . . . . . 312--316
Anonymous Farming the ``Beefsteak'' Oyster . . . . 317--317
Morris Fishbein The Month in Medical Science . . . . . . 318--319
N. H. Goss Naval Adequacy --- II . . . . . . . . . 320--324
Anonymous X-Rays Reveal Diseases of Ancient
Egyptians . . . . . . . . . . . . . . . 325--325
Anonymous Primitive versus Modern Methods of Mint
Farming . . . . . . . . . . . . . . . . 326--327
Albert A. Hopkins Combating the ``Bends'' . . . . . . . . 328--329
W. L. Calver Exploring in Palestine and Transjordania 330--333
John F. Rider Why Is a Radio Soprano Unpopular . . . . 334--337
George H. Knibbs The Menace of Increasing Population . . 338--340
Anonymous Motor Sleeping Coach . . . . . . . . . . 341--341
Herbert Otis Warren Up Snow-clad Peaks . . . . . . . . . . . 342--343
Anonymous One Machine Fills a Huge Plant . . . . . 344--345
Anonymous Editorials: Our Point of View . . . . . 398--399
Anonymous Inventions for the Household: Hydraulic
Drain Pump, Cookery Parchment, and more 440--441
Anonymous Inventions New and Interesting: Lawn
Rake, Iceless Water Cooler, and more . . 442--443
Anonymous \booktitleScientific American Digest:
Lightning Stroke Electrocutes Tree,
Safeguarding an Oil Tanker, and more . . 444--446
Alexander Klemin Learning to Use Our Wings: Developing
Motion Pictures in the Air, Parachutes
for the Entire Plane, and more . . . . . 448--451
Anonymous Industries From Atoms: Tiny Tablet
Sterilizes Drinking Water, Dust Induces
Rain, and more . . . . . . . . . . . . . 452--455
Anonymous Strays From the Ether: Tracing the Radio
Echo, First Paid Radio Message, and more 456--459
Anonymous The Back Yard Astronomer . . . . . . . . 460--461
Hentry Norris Russell The Heavens in November . . . . . . . . 466--466
Anonymous Commercial Property News: The Court
Learns About Hooks and Slices, Lincoln
and Invention, and more . . . . . . . . 476--480
Tassilo Adam The Orang Lahut . . . . . . . . . . . . 393--396
Anonymous World's Largest Electrically-Propelled
Passenger Ships . . . . . . . . . . . . 397--397
Anonymous From the Scrap-book of Science . . . . . 400--401
Donald A. Laird There is a Lot to Just Sitting or
Standing . . . . . . . . . . . . . . . . 402--404
Anonymous It Reknits Hosiery . . . . . . . . . . . 405--405
Paul R. Heyl Wave Atoms . . . . . . . . . . . . . . . 406--408
Charles W. Geiger and
Ruth Sabichi San Francisco's Memorial Museum . . . . 409--411
P. Cormac Wheels . . . . . . . . . . . . . . . . . 412--415
Henry Norris Russell Asteroid Hunting . . . . . . . . . . . . 416--417
N. H. Goss Naval Adequacy --- III . . . . . . . . . 418--422
Anonymous ``Movie'' Film as Aid to Banking . . . . 423--423
Morris Fishbein The Month in Medical Science . . . . . . 424--425
Oliver B. Finn The Brace and Bit Plant . . . . . . . . 426--427
James R. Randolph Speeding Up a Railroad Yard . . . . . . 428--429
G. Kingsley Noble Creatures of Perpetual Night . . . . . . 430--432
V. I. Cooper Stocking Up An Expedition's Larders . . 433--435
J. Reid Moirs Did Old Stone Age Man Inhabit Ireland? 436--438
Anonymous Co-operation Extends Hospital's Scope 439--439
Anonymous Editorials: Our Point of View . . . . . 495--495
Anonymous Household Inventions: Insect Controller,
Non-slip Hanger, and more . . . . . . . 536--536
Anonymous Inventions New and Interesting: Fibrous
Wall Insulation, Daylight Lamp, and more 537--537
Anonymous \booktitleScientific American Digest:
Evolution of a Tanning by-Product,
End-Squaring and Packaging Lumber, and
more . . . . . . . . . . . . . . . . . . 540--543
Anonymous Industries From Atoms: Research Extends
Application of Gas Fuel, Health Hazard
in Chromium Plating, and more . . . . . 544--545
Alexander Klemin Learning to Use Our Wings: Experiments
in Fog Flying, Aviation Safety Congress,
and more . . . . . . . . . . . . . . . . 546--548
Anonymous Strays From the Ether: Television
Abroad, How to Powerize Your Receiver,
and more . . . . . . . . . . . . . . . . 550--553
Anonymous The Back Yard Astronomer . . . . . . . . 554--555
Henry Norris Russell The Heavens in December . . . . . . . . 562--562
Anonymous Commercial Property News: The Flying
Paster, Stopping Leaks in Radiators . . 569--572
James Henry Breasted The Oldest Known Surgical Treatise . . . 489--493
Anonymous A Prehistoric Scene in Mongolia . . . . 494--494
Anonymous From The Scrap-Book of Science . . . . . 496--497
Alexander F. Skutch The Secret of the Bladderwort . . . . . 498--501
Henry Norris Russell Calculating Orbits . . . . . . . . . . . 502--503
Lawrence W. Pedrose Wooden Highways that Carry Rivers . . . 504--505
Anonymous New Scientific Paintings Outline The
Earth's History . . . . . . . . . . . . 506--507
Donald A. Laird Noise . . . . . . . . . . . . . . . . . 508--510
Anonymous Engine Ingenuity . . . . . . . . . . . . 511--511
E. L. Chicanot The New North . . . . . . . . . . . . . 512--515
Paul Griswold Howes Anomaly Island . . . . . . . . . . . . . 516--518
N. H. Goss Naval Adequacy --- IV . . . . . . . . . 519--523
Morris Fishbein The Month in Medical Science . . . . . . 524--525
P. Cormac Wheels --- II . . . . . . . . . . . . . 526--528
Anonymous A Monumental Stone Forest . . . . . . . 529--529
Earle E. Schumacher Spectrographic Analysis . . . . . . . . 530--531
Charles W. Geiger Some Unique Methods Of Dam Construction 532--533
F. D. McHugh Our Latest Peace Insurance . . . . . . . 534--535
Anonymous Locomotive, Climbing Tractor, and more 538--539
Anonymous Editorials: Our Point of View . . . . . 14--15
Anonymous Of Interest to Motorists: Ice Cream
Delivery Truck, Fender Repairer, and
More . . . . . . . . . . . . . . . . . . 61--61
Anonymous Inventions New and Interesting: A Pin at
a Time, Rapid Staplers, and More . . . . 62--63
Anonymous Inventions for the Household: Dress
Envelope, Egg Kettle, and More . . . . . 64--64
Anonymous \booktitleScientific American Digest: A
Pleasure-Car Snow-Plow, Cage Experiment
Proves Borer Can be Controlled, and more 65--69
Anonymous Learning to Use Our Wings: Model
Aircraft, Aviation in Central America 70--73
Anonymous Industries From Atoms: By-Product
Process Has Almost Supplanted Beehive
Coke Ovens, Methane as Successor to
Present Manufactured Gas, and more . . . 74--77
Anonymous Current Bulletin Briefs . . . . . . . . 78--78
Anonymous The Back Yard Astronomer . . . . . . . . 80--82
Henry Norris Russell The Heavens in January . . . . . . . . . 85--85
Anonymous Commercial Property News: Ideas Are Not
Patentable, Profits in Cinders, and more 92--95
Chester A. Reeds Belching Cauldrons of the Earth . . . . 9--13
Anonymous From the Scrap-book of Science . . . . . 16--17
Emma Reh Stevenson What is Life? . . . . . . . . . . . . . 18--19
Henry Norris Russell Where to Put It? . . . . . . . . . . . . 20--21
F. D. McHugh Railroads Turn to the Highways . . . . . 22--23
Milton Wright and
Joseph J. Schermack Robots for Salesmen . . . . . . . . . . 24--26
Anonymous Wood Gases for Motors . . . . . . . . . 27--27
C. Binkley Do the Records of Science Face Ruin? . . 28--30
J. C. Mclennan The Mystery of the Green Line . . . . . 31--33
Morris Fishbein The Month in Medical Science . . . . . . 34--35
Anonymous Adventurous Archeology . . . . . . . . . 36--37
N. H. Goss Naval Adequacy --- V . . . . . . . . . . 38--42
Anonymous Saving the Scraps . . . . . . . . . . . 43--43
Anonymous Your Next Automobile . . . . . . . . . . 44--47
P. Cormac Wheels --- III . . . . . . . . . . . . . 48--51
Anonymous Noise Exclusion . . . . . . . . . . . . 52--52
Anonymous Long Bridge Shortens Coastal Route . . . 53--53
Anonymous Niagara Should be Saved . . . . . . . . 54--55
Heinrich Ries The Origin of Petroleum . . . . . . . . 56--59
Anonymous Contented Animals have a Home-like Zoo 60--60
Anonymous Editorials: Our Point of View . . . . . 108--109
Anonymous Inventions for the Household: Household
Inventions --- Paring Hook, Flower
Holder, and more . . . . . . . . . . . . 160--161
Anonymous \booktitleScientific American Digest:
Lafayette Dam Failure, The 1928 West
Indies Storm, and more . . . . . . . . . 162--165
Anonymous Industries From Atoms: ``Self-Resource''
for Gas-Filled Mines, Novel Drying Trick
Applied in Dynamite Manufacture, and
more . . . . . . . . . . . . . . . . . . 166--167
Alexander Klemin Learning to Use Our Wings: The Chicago
Air Show, ILA, and more . . . . . . . . 168--171
Anonymous Current Bulletin Briefs . . . . . . . . 172--172
Anonymous The Back Yard Astronomer . . . . . . . . 174--178
Henry Norris Russell The Heavens in February . . . . . . . . 178--178
Anonymous Commercial Property News: Are We Slowing
Down?, Employers' Shop Rights, and more 187--191
Anonymous The Clean and Honest Eskimos . . . . . . 105--107
Arthur H. Compton What Things are Made of --- I . . . . . 110--113
Anonymous From the Scrap-book of Science . . . . . 114--115
A. E. Buchanan, Jr. Chemical Alarm Clocks Arouse Sleepy
Plants . . . . . . . . . . . . . . . . . 116--117
Milton Wright A Use for Everything . . . . . . . . . . 118--120
Anonymous We Offer a Medal for Safety at Sea . . . 121--123
Morris Fishbein The Month In Medical Science . . . . . . 124--125
H. E. Anthony With ``Fuzzies'' After Ibex . . . . . . 126--129
Anonymous Picturing Skill in Golf . . . . . . . . 130--131
Henry Norris Russell The Hunt for the Hub of the Universe . . 132--133
Anonymous In The Birthplace of Pure Iron . . . . . 134--136
Alert G. Ingalls The ``Sinking'' Tower of Pisa . . . . . 137--137
Anonymous A Pre-cast Seven Mile Bridge . . . . . . 138--141
Anonymous Type-setting by Telegraph . . . . . . . 141--141
Anonymous A British Destroyer Leader --- We Have
None . . . . . . . . . . . . . . . . . . 142--143
J. Reid Moir The Romans in East Anglia . . . . . . . 144--146
Anonymous Sing Sing Past and Present . . . . . . . 147--147
Alexander Klemin Investing in Aviation . . . . . . . . . 148--153
Anonymous World's Largest Hall Seats 40,000 People 154--156
Anonymous Salt from the Sea . . . . . . . . . . . 157--157
Anonymous Work Bench has Built-Tool Chest,
One-Piece Hammer: New Saw Blade, and
more . . . . . . . . . . . . . . . . . . 158--159
Anonymous Editorials: Our Point of View . . . . . 237--237
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 242--243
Anonymous Inventions New and Interesting:
Single-Leg Table, Lamp Switch And
Lighter, and more . . . . . . . . . . . 257--257
Alexander Klemin Learning to Use Our Wings: Airplane
Design Competition, A New Type of
Landing Field, and more . . . . . . . . 258--261
Anonymous \booktitleScientific American Digest:
World's Largest Steam Locomotive,
Britain Plants for New Forests, and more 262--265
Anonymous Industries From Atoms: Spontaneous
Heating of Coal, Electronic Bombardment
Said to Synthesize Rubber, and more . . 266--268
Anonymous Current Bulletin Briefs . . . . . . . . 270--270
Anonymous The Back Yard Astronomer . . . . . . . . 272--273
Henry Norris Russell The Heavens in March . . . . . . . . . . 279--279
Anonymous Commercial Property News: Patent Office
Falls Behind, Safety in Secrecy, and
more . . . . . . . . . . . . . . . . . . 284--287
C. E. Rosendahl Inside the ``Graf Zeppelin'' . . . . . . 201--205
Alexander Klemin Planes for Private Flying . . . . . . . 206--215
Henry Norris Russell Does Our Universe Rotate? . . . . . . . 216--217
William Bowie Weighing the Earth From a Submarine . . 218--221
Edmund James How I Built my Glider . . . . . . . . . 222--223
Anonymous Camera Shots of Scientific Events . . . 224--225
Anonymous Air-Mail Pick Up and Release . . . . . . 226--227
Milton Wright Builders of the Aviation Industry . . . 228--233
Arthur H. Compton What Things are Made of --- II . . . . . 234--236
Armstrong Perry Radio Guides the Airway Traveler . . . . 238--239
Anonymous New York's New Railroad Bus Station . . 240--240
Samuel L. Hoyt Super-High-Speed Alloy . . . . . . . . . 241--241
Anonymous The Devil Motorizes . . . . . . . . . . 244--245
Albert A. Hopkins Aluminum on Trial . . . . . . . . . . . 246--248
Anonymous Seeking the Secrets of Lightning . . . . 249--249
Harden F. Taylor Science in the Distribution of Fish . . 250--252
Anonymous The Jovian Face Changes . . . . . . . . 253--253
G. S. Carraway Drained Tract is New World Netherlands 254--255
Anonymous Folding Service Tray Carried with One
Hand, New Coffee Urn, and more . . . . . 256--256
Anonymous Editorials: Our Point of View . . . . . 325--325
Anonymous \booktitleScientific American Digest:
Filling Station for Pocket Lighters,
Houston's Arc-Welded Hangars, and more 346--348
Alexander Klemin Learning to Use Our Wings: Planes on the
Instalment Plan, Curtiss--Caproni, and
more . . . . . . . . . . . . . . . . . . 356--363
Anonymous Industries From Atoms: Poison Gas Worse
Than a White Elephant, Synthetic Tannin
Needed, and more . . . . . . . . . . . . 364--367
Anonymous Current Bulletin Briefs . . . . . . . . 368--369
Anonymous The Back Yard Astronomer . . . . . . . . 370--372
Henry Norris Russell The Heavens in April . . . . . . . . . . 372--372
Anonymous Commercial Property News: ``Plymouth''
is ``Merely Geographical'', Oil Company
Wins ``Parco'' Decision, and more . . . 380--383
Walter S. Hiatt A Factory in the Wilderness . . . . . . 297--300
Anonymous Our Light-Plane Contest . . . . . . . . 301--301
George Ellery Hale Solar Research for Amateurs --- I . . . 302--305
Anonymous From the Scrap-book of Science . . . . . 306--307
Anonymous A Mountainous Earthen Dam . . . . . . . 308--309
Cornelia H. Dam Exploring the Biblical Beth-shan . . . . 310--313
Anonymous Boston's New ``Madison Square Garden'' 314--315
Henry Norris Russell Quantitative Analysis of the Sun . . . . 316--317
Walter E. Burton Animal Allies of the Physician . . . . . 318--319
Donald A. Laird How People Differ Mentally . . . . . . . 320--321
Friedrich Bergius New Uses for Coal and Wood . . . . . . . 322--324
Morris Fishbein The Month in Medical Science . . . . . . 326--327
S. F. Aaron Why do Insects Migrate? . . . . . . . . 328--330
Anonymous Safety for Those Who Go Down to the Sea
in Ships . . . . . . . . . . . . . . . . 331--331
Anonymous Paper Milk ``Bottles'' . . . . . . . . . 332--333
Frank M. Byers Making the Farm Pay . . . . . . . . . . 334--337
Albert G. Ingalls Ultra-Violet Transmitting Glass --- Has
it Made Good? . . . . . . . . . . . . . 338--343
Anonymous Electric ``Wife Saver'', Stool-Ladder,
and more . . . . . . . . . . . . . . . . 344--344
Anonymous Ball Cleaner, Arm Support, and more . . 345--345
Anonymous Editorials: Our Point of View . . . . . 397--397
Anonymous Inventions New and Interesting: Novel
Rug for Playing Games, Doorknob Lock,
and more . . . . . . . . . . . . . . . . 446--447
Anonymous \booktitleScientific American Digest:
Extra Wheels on Buses for Greater
Safety, Two World's Largest Generators,
and more . . . . . . . . . . . . . . . . 448--453
Alexander Klemin Learning to Use Our Wings: An
Interesting Light Plane, Practical
Flying, and more . . . . . . . . . . . . 454--456
Anonymous Industries From Atoms: Chemical Effects
of a Meat Diet, Improvements Modernize
Sulfuric Acid Manufacture, and more . . 457--460
Anonymous Current Bulletin Briefs . . . . . . . . 462--462
Anonymous The Back Yard Astronomer . . . . . . . . 464--466
Henry Norris Russell The Heavens in May . . . . . . . . . . . 466--466
Anonymous Commercial Property News: Lumber
Exporters Urged to Use Brand, Inventors
and Engineers Lauded, and more . . . . . 476--479
G. A. Persson Have Plants a Heart Beat? . . . . . . . 393--396
Anonymous From the Scrap-book of Science . . . . . 398--399
F. D. McHugh Where the River Shannon Flows . . . . . 400--403
Leon Legrain New Discoveries at Ur . . . . . . . . . 404--407
Henry Norris Russell Electric Thermometers for the Stars . . 408--409
Robert Stewart Farm-waste Profits: Best Farm Relief . . 410--411
W. D. Puleston Naval Aerologists . . . . . . . . . . . 412--413
Oliver Lodge The New Outlook in Physics . . . . . . . 414--415
Morris Fishbein The Month in Medical Science . . . . . . 416--417
Donald A. Cadzow The Vanishing American Indian
Medicine-Man . . . . . . . . . . . . . . 418--420
Anonymous A New Life-boat for Greater Safety at
Sea . . . . . . . . . . . . . . . . . . 421--422
Anonymous From Bamboo Forests to Fishing Rods . . 423--423
G. M. Barnes The Guns Against the Airplane . . . . . 424--427
Henry W. Hough Putting it Over with Movies . . . . . . 428--429
Cyrus N. Ray New Evidences of Ancient Man in America 430--431
Francis P. Mann Scientific Examination of Paintings . . 432--433
Anonymous Is the Engineer Alert? . . . . . . . . . 434--435
George Ellery Hale Solar Research for Amateurs --- II . . . 436--438
Anonymous The Three Best Light Planes . . . . . . 439--439
Lawrence Wm. Pedrose Mechanical Etching in Wood . . . . . . . 440--440
Anonymous Dog Teams Race in California . . . . . . 441--441
George H. Hamilton Largest Amateur Telescope . . . . . . . 442--443
G. H. Dacy Rag-Picking as Big Business . . . . . . 444--445
Anonymous Editorials: Our Point of View . . . . . 493--493
Anonymous Inventions New and Interesting: Top
Remover, Floor Polisher, and more . . . 538--539
Anonymous \booktitleScientific American Digest:
Simplified Lenard Ray Tube Gives Science
New Tool, ``Squirting'' Cold Copper Into
Tubes, and more . . . . . . . . . . . . 540--542
Alexander Klemin Learning to Use Our Wings: The Railroads
in Aviation, Accident Analysis, and more 544--546
Anonymous Chemistry in Industry: Natural Gas
Byproducts Find New Uses, White
``Blue-Prints'', and more . . . . . . . 548--553
Anonymous Current Bulletin Briefs . . . . . . . . 554--555
Henry Norris Russell The Heavens in June . . . . . . . . . . 558--558
Anonymous Chemistry in Industry: Chemistry and the
``Bright Lights'', Corrosion Proofing
Gives Dark Colored Surface, and more . . 564--567
Anonymous Commercial Property News: State Royalty
Tax Held Illegal, Process for Breaking
up Oil Emulsions Denied Patent, and more 568--570
Anonymous Patents Recently Issued . . . . . . . . 570--572
Walter Miles Sleeping with the Eyes Open . . . . . . 489--492
Albert A. Hopkins Modern One-Man Orchestras . . . . . . . 494--496
Anonymous Architects as Room Designers . . . . . . 497--497
Paul R. Heyl The Strangest Thing in Physics . . . . . 498--500
Anonymous ``Firsts'' in Aviation . . . . . . . . . 501--501
Anonymous Work Progresses on Mightiest Bridge . . 502--503
Henry Norris Russell The Highest Known Velocity . . . . . . . 504--505
Anonymous From the Scrap-book of Science . . . . . 506--507
Karl L. Kithil Prospecting with Artificial Earthquakes 508--511
Morris Fishbein The Month in Medical Science . . . . . . 512--513
Ernest N. Patty The Search for the First American . . . 514--515
Elizabeth Richey Dessez Education Adopts the Motion Picture . . 516--517
Milton Wright Pointers from a Pen Maker . . . . . . . 518--520
Anonymous The Mystery, Desolation, and Grandeur of
Death Valley . . . . . . . . . . . . . . 521--521
Anonymous Egyptian Vandalism 3400 Years Ago . . . 522--524
Anonymous Aerodynamic Wind Mills . . . . . . . . . 525--525
A. P. Peck Television Advances . . . . . . . . . . 526--527
Francis P. Mann Protecting Paintings for Posterity . . . 528--529
Anonymous Roman Engineering Triumphs . . . . . . . 530--532
Anonymous Our Light-Airplane Design Contest . . . 533--533
H. D. Martin Wasteful Cotton Baling Methods . . . . . 534--536
Anonymous Early Indians of Florida . . . . . . . . 537--537
Anonymous The Amateur Astronomer . . . . . . . . . 556--558
Anonymous Index To Volume 140, January--June, 1929 573--575
Henry Norris Russell Back of Frontispiece . . . . . . . . . . 7--7
Anonymous Frontispiece: Slashes in the
Mountainside . . . . . . . . . . . . . . 8--8
Anonymous Editorials: Our Point of View . . . . . 12--13
Anonymous Inventions New and Interesting: Simple
Tightener for Tennis Nets, Baby
Roadster, and More . . . . . . . . . . . 62--64
Anonymous \booktitleScientific American Digest:
Railroad Travel De Luxe, Just What is a
Robot?, and more . . . . . . . . . . . . 64--70
Alexander Klemin Learning to Use Our Wings: A New Cooling
System, The Helicogyre, and more . . . . 70--74
Morris Fishbein Medical Science: Sudden Death of
Motorists, How Gilbert, American
Composer, Conquered Heart Disease, and
more . . . . . . . . . . . . . . . . . . 74--76
Anonymous Chemistry in Industry: Case Hardening
Steel by Nitrogen Treatment, Germany's
Chemical Industry Expands, and more . . 77--79
Anonymous Current Bulletin Briefs . . . . . . . . 80--81
Henry Norris Russell The Heavens in July . . . . . . . . . . 84--84
Anonymous Chemistry in Industry: New Arc Light
Carbons, Grading Cottonseed by Analysis,
and more . . . . . . . . . . . . . . . . 87--92
Anonymous Commercial Property News: For Sleepy
Copyright Owners, Foreign Rights to
Patents and Trademarks, and more . . . . 92--95
Anonymous Looking Ahead With the Editor . . . . . 5--5
Anonymous Among Our Contributors . . . . . . . . . 5--6
F. D. McHugh From Colombian Mountains to the Sea . . 9--11
Anonymous From the Scrap-book of Science . . . . . 14--16
J. Reid Moir The Invaders of England . . . . . . . . 16--17
Donald A. Laird The Marvelous Machinery of Muscle . . . 18--20
Anonymous A Ship that Carries Trains . . . . . . . 21--21
William Alphonso Murrill Neglected Mushrooms . . . . . . . . . . 22--23
Ruel Mcdaniel Tailor-Made Weather for Offices . . . . 24--26
Robert Sparks Sky Photography for Lightning . . . . . 27--27
C. Ainsworth Mitchell Estimating the Age of Writing . . . . . 28--29
Henry Norris Russell Earth Shine . . . . . . . . . . . . . . 30--31
Richard Ruedy The Ultra-Violet From the Sun . . . . . 32--34
Anonymous Pumps Disclose Lake Nemi's Secrets . . . 35--35
Lady Mary Heath It is Safe to Fly . . . . . . . . . . . 36--39
Anonymous The World's Highest Dam for Irrigation 39--40
Chester M. Wallace The Stage Goes to School . . . . . . . . 40--42
Henry W. Hough Underground Arteries for Oil and Gas . . 43--46
Annie S. Peck Wings of South America . . . . . . . . . 46--49
Albert A. Hopkins Foiling the Burglar . . . . . . . . . . 50--52
Anonymous Plugging Knot Holes to Salvage Lumber 53--53
S. R. Winters Banditry by Mail . . . . . . . . . . . . 54--56
Manfred Curry Why not Propel Boats by Vibration? . . . 56--57
?. Ernst and
?. Ernst Groupings in the Aviation Industry . . . 58--58
Guy Elliott Mitchell Avocados --- Alligator Pears . . . . . . 59--60
Harold J. Shepstone Walking Around Jerusalem . . . . . . . . 60--61
Anonymous The Amateur Astronomer . . . . . . . . . 82--84
Henry Fairfield Osborn Back of Frontispiece . . . . . . . . . . 103--103
Anonymous Frontispiece: Reindeer With Horns in the
Velvet . . . . . . . . . . . . . . . . . 104--104
Anonymous Editorials: Our Point of View . . . . . 109--109
Anonymous \booktitleScientific American Digest: A
Bird's Companionate Marriage, Vast
Supply of Anthracite Chokes Rivers, and
more . . . . . . . . . . . . . . . . . . 160--163
Alexander Klemin Learning to Use Our Wings: How Many
Airplanes in 1936?, Cowling to Reduce
Drag, and more . . . . . . . . . . . . . 164--166
Morris Fishbein Medical Science: The Danger from X-Ray
Films, Fish Tapeworm Infestation, and
more . . . . . . . . . . . . . . . . . . 167--169
Anonymous Chemistry in Industry: What is
Petroleum?, Sulfur in Air Attacks Drying
``Wash'', and more . . . . . . . . . . . 170--175
Anonymous Current Bulletin Briefs . . . . . . . . 178--180
Henry Norris Russell The Heavens in August . . . . . . . . . 182--182
Anonymous Chemistry in Industry: Peroxide also
Bleaches Cereals, New Oil for Old . . . 183--187
Anonymous Commercial Property News: Employer
Restrained from Using Patent, The Patent
Attorney --- Friend or Enemy?, and more 188--191
Carl J. Lomen Reindeer as a Source of Food . . . . . . 105--108
Anonymous Camera Shots of Scientific Events . . . 110--111
Harold McFadden Diatoms . . . . . . . . . . . . . . . . 112--114
Anonymous Giant Inhabitants of Our Continent, more
than 100,000,000 Years Ago . . . . . . . 115--115
John T. Rowland The `Old Rubber Cow:' The Blimp . . . . 116--118
R. Broom What the World Owes to South Africa . . 119--121
C. W. Geiger Novel Features of the O'Shaughnessy Dat 122--123
Henry W. Hough Our Crop-Destroying Insect Pests . . . . 124--127
Donald A. Laird What is Wrong with Men's Clothing . . . 128--130
Anonymous Catering for the Denizens of the ``Zoo'' 131--131
E. Bade Fungi that Kill . . . . . . . . . . . . 132--133
Karl P. Schmidt The Truth about Snake Stories . . . . . 134--136
W. P. Pycraft The Camel's Hump . . . . . . . . . . . . 137--137
Henry Norris Russell The Puzzle of the Major Planets . . . . 138--139
Arthur Newton Pack Shooting Wild Life With a `Movie' Camera 140--143
H. Chase Stone Learning to Fly From the Ground up . . . 144--146
Anonymous Off with the Old Antlers and on with the
New . . . . . . . . . . . . . . . . . . 147--147
A. A. Hopkins Foiling the Burglar --- II . . . . . . . 148--150
Anonymous More Light on Sumerian Culture . . . . . 151--151
Frank N. Wilson The Loon Poses for the Camera . . . . . 152--153
Gerry Bouwer Pioneering for a Cape to Cairo Highway 154--156
Anonymous Last Call for Light Airplane Design
Contest . . . . . . . . . . . . . . . . 157--157
J. H. Merrill The Home of the Honey Bees . . . . . . . 158--159
Anonymous The Amateur Astronomer . . . . . . . . . 176--177
Charles G. Abbott Back of Frontispiece . . . . . . . . . . 199--199
Anonymous Frontispiece: The Planetarium, and the
Lecturer Using an Electric Pointer . . . 200--200
Anonymous Editorials: Our Point of View . . . . . 205--205
Anonymous \booktitleScientific American Digest:
Our Newest Fighting Tank, Portable
Flashing Warning Lamp, and more . . . . 246--247
Alexander Klemin Learning to Use Our Wings: The
``Flamingo,'' a Metal Plane, Gliding in
Germany, and more . . . . . . . . . . . 248--249
Morris Fishbein Medical Science: The Weather and Pain in
the Joints, Arsenical Poisoning, and
more . . . . . . . . . . . . . . . . . . 250--250
Anonymous Chemistry in Industry: Hydrogenation
Comes to Revolutionize Gasoline
Production, Organic Substances Reduce
Boiler Scale, and more . . . . . . . . . 252--254
Anonymous Current Bulletin Briefs . . . . . . . . 256--256
Henry Norris Russell The Heavens in September . . . . . . . . 262--262
Anonymous Commercial Property News: Rear Admiral
Awarded Damages in Torpedo Plane Patent
Suit, Sleeve Valve Motor Held Different
From Prior Patent, and more . . . . . . 267--271
Anonymous Looking Ahead With the Editor . . . . . 197--197
Levin H. Campbell, Jr. Among Our Contributors . . . . . . . . . 197--197
Albert G. Ingalls Canned Astronomy . . . . . . . . . . . . 201--204
Anonymous From the Scrap-Book of Science . . . . . 206--207
Anonymous Licorice the Versatile . . . . . . . . . 208--210
Anonymous Uncle Sam Gives Us New Money . . . . . . 211--211
Arthur P. Woollacott Why Does an Oil Gusher Gush? . . . . . . 212--213
James Montagnes Charting Canada's Wilderness from the
Air . . . . . . . . . . . . . . . . . . 214--215
Levin H. Campbell, Jr. Our Army's Mechanized Force . . . . . . 216--219
Henry Norris Russell What Becomes of the Star Light? . . . . 220--221
Reginald M. Cleveland Is the Airplane Diesel Practical? . . . 222--224
Anonymous Silvering the World's Largest Telescope 225--225
Albert A. Hopkins Foiling the Burglar --- III . . . . . . 226--228
Anonymous Last Call for Sea-Safety Contest . . . . 229--229
Walter E. Burton The Zeppelin's American Home . . . . . . 230--233
R. M. Boykin Steam Stages a Come-Back . . . . . . . . 234--236
J. W. Fecker Designing Large Telescopes . . . . . . . 237--239
Anonymous World's Largest Vineyard Uses Machinery
and Chemical Control . . . . . . . . . . 240--241
J. Reid Moir Ancient History from Aloft . . . . . . . 242--243
Anonymous Compressed Air Used in Novel Hospital 244--244
Anonymous The ``Heat Makes Cold'' Refrigeration
Unit . . . . . . . . . . . . . . . . . . 245--245
Anonymous The Amateur Astronomer . . . . . . . . . 258--259
Hugo Eckener Back of Frontispiece . . . . . . . . . . 281--281
Anonymous Frontispiece: Design for an Ideal
Airport, Adequate in all Respects . . . 282--282
Carl Stearns Clancy Aviation: Aviation's Patron Saint . . . 283--286
Anonymous Editorials: Our Point of View . . . . . 288--290
Alexander Klemin Learning to Use Our Wings: The Autogiro,
Learning to Fly, and more . . . . . . . 336--341
Anonymous \booktitleScientific American Digest:
Stone Carving by Sand Blasting, New
Synthetic Rubber is Made Largely of
Waste Materials, and more . . . . . . . 342--344
Morris Fishbein Medical Science: The Month in Medical
Science . . . . . . . . . . . . . . . . 346--346
Anonymous Chemistry in Industry: Sionon a Sugar
Substitute, Petroleum Products in
Insecticides, and more . . . . . . . . . 348--351
Anonymous Current Bulletin Briefs: Aviation,
Electricity, and more . . . . . . . . . 352--353
Henry Norris Russell The Heavens in October . . . . . . . . . 356--356
Anonymous Commercial Property News: Mechanical
Wonderland, Hair Waving Apparatus
Patented, and more . . . . . . . . . . . 364--367
Anonymous Looking Ahead With the Editor . . . . . 279--279
Dudley W. Knox Among our Contributors . . . . . . . . . 279--280
Anonymous From the Scrap-book of Science . . . . . 287--287
Earl D. Osborn How the Autogiro Flies . . . . . . . . . 290--292
Anonymous The New Queen of the Sea . . . . . . . . 293--293
Paul Griswold Howes Monkey --- Shines . . . . . . . . . . . 294--297
William E. Arthur How Shall we Design our Airports? . . . 298--301
J. Ferdinand Kayser Razor Blade Science . . . . . . . . . . 302--306
H. B. Miller That `Fatal' Tailspin . . . . . . . . . 307--309
Louis S. Treadwell The ``Lively'' Ball . . . . . . . . . . 310--312
Reginald M. Cleveland What is the Future of Aviation? . . . . 313--315
Henry Norris Russell Meteors . . . . . . . . . . . . . . . . 316--317
Anonymous German Dornier Plane Carries 100
Passengers: Has 12 Engines . . . . . . . 318--319
Captain Dudley W. Knox Naval Reduction and Parity . . . . . . . 320--322
C. C. Wylie A Large Meteor Falls . . . . . . . . . . 323--323
Alexander Klemin American Passenger Air Transport . . . . 324--329
Henry W. Hough Greater Washington Starts to Rise . . . 330--333
Anonymous From the Archeologist's Note Book . . . 334--334
Anonymous The Detection of Fake Antiquities . . . 335--335
Anonymous The Amateur Astronomer . . . . . . . . . 354--355
Anonymous Back of Frontispiece: George Eastman . . 375--375
Anonymous Frontispiece: Sinai, the Sublime
Triple-headed Mountain . . . . . . . . . 376--376
Anonymous Editorials: Our Point of View . . . . . 381--382
Anonymous \booktitleScientific American Digest:
Device to Prevent Frozen Water Pipes,
Self-Locking Bolt and Nut Thread, and
more . . . . . . . . . . . . . . . . . . 432--435
Alexander Klemin Learning to Use Our Wings: Handley Page
Slot Mechanisms, Certification of
Private Lights, and more . . . . . . . . 436--437
Anonymous Chemistry in Industry: Cheap Aluminum
Chloride Now Available, Australian
Motorists to Use Gasoline Mixed with
Alcohol . . . . . . . . . . . . . . . . 438--441
Morris Fishbein Medical Science: Tobacco Smoking, Iodine
Surveys, and more . . . . . . . . . . . 442--445
Anonymous Current Bulletin Briefs . . . . . . . . 446--447
Henry Norris Russell The Heavens in November . . . . . . . . 450--451
Anonymous Learning to Use Our Wings: Physiological
Effects of the Spin, American Passenger
Air Transport --- II, and more . . . . . 454--459
Anonymous Commercial Property News: Mechanical
Method Claims Granted, Joseph Jenks'
Petition, and more . . . . . . . . . . . 460--461
Anonymous Patents Recently Issued . . . . . . . . 461--464
Anonymous Looking Ahead with the Editor . . . . . 373--373
Anonymous Among Our Contributors . . . . . . . . . 373--374
F. D. McHugh Ford's Friend Edison . . . . . . . . . . 377--380
Raymond Francis Yates Wall Street and the Research Laboratory 382--384
Anonymous Safe, Fireproof, Steel Scaffolding . . . 385--385
Donald A. Laird Synthetic Sweet Smells . . . . . . . . . 386--389
Anonymous Cleaning Railway Cars . . . . . . . . . 389--389
Anonymous Ice by Wire . . . . . . . . . . . . . . 390--393
J. Reid Moir The Great Flint Mines of Grime's Graves 394--396
Oscar Parkes Japan's New Navy . . . . . . . . . . . . 396--399
Henry Norris Russell The Puzzles of the Comets --- I . . . . 400--401
Anonymous Press a Button --- There's Your Book . . 402--404
Alexander Klemin American Passenger Air Transport --- II 404--408
Anonymous America's `Cleanest' Industry . . . . . 408--411
Anonymous Amateur Seismology . . . . . . . . . . . 411--413
Paul R. Heyl The Speed Record of the Universe . . . . 414--415
A. Pearson Weighing With Light . . . . . . . . . . 416--418
Anonymous Sardine Packing --- A Growing California
Industry . . . . . . . . . . . . . . . . 419--419
H. J. Payne Supplying the Reptile Leather Demand . . 420--422
Albert G. Ingalls Power From the Earth . . . . . . . . . . 422--425
Bruce McDaniel Praying Trees of the Desert . . . . . . 425--425
Ernest W. Brown Practical Astronomy for Amateurs . . . . 426--428
A. A. Hopkins An Outlawed Industry 'Comes Back' . . . 428--431
Anonymous Unique Regrade Engineering . . . . . . . 431--431
Anonymous The Amateur Astronomer . . . . . . . . . 448--450
C. Leonard Woolley Back of Frontispiece . . . . . . . . . . 471--471
Anonymous Frontispiece: Mousterian Man, Woman, and
Infant --- a Race That Became Extinct 472--472
Anonymous Editorials: Our Point of View . . . . . 477--477
Anonymous \booktitleScientific American Digest: A
Mammoth's Deformed Wisdom Tooth, Life
Saving by Mechanical Respiration, and
more . . . . . . . . . . . . . . . . . . 524--527
Anonymous Learning to Use Our Wings: A Radio
Altimeter, Instruction in Fog Flying,
and more . . . . . . . . . . . . . . . . 528--529
Anonymous Chemistry in Industry: Synthetic Resin
Improves Lacquers, Powdered Fuels for
Engines, and more . . . . . . . . . . . 530--532
Morris Fishbein Medical Science: Liver and Iron in
Anemia, Eye Examinations of Children,
and more . . . . . . . . . . . . . . . . 536--537
Anonymous Current Bulletin Briefs . . . . . . . . 538--539
Henry Norris Russell The Heavens in December . . . . . . . . 542--542
Anonymous Chemistry in Industry: Novel Method for
Making Citric Acid, Rust Used in New
Base for Paint, and more . . . . . . . . 545--547
Anonymous Commercial Property News: Reward Awaits
Inventor of Machine, No Infringement in
Old Process for Cleaning Neon Tubes, and
more . . . . . . . . . . . . . . . . . . 552--554
Anonymous Index to Volume 141, July--December,
1929 . . . . . . . . . . . . . . . . . . 557--559
Anonymous Looking Ahead With the Editor . . . . . 469--469
Lester D. Seymour Among Our Contributors . . . . . . . . . 469--469
David Masters A Scuttled Fleet is Salvaged . . . . . . 473--476
Ida Treat When Reindeer Roamed the Pyrénées --- I 478--481
Anonymous From the Scrap-book of Science . . . . . 482--483
Stratford Corbett An Office Building of the New Era . . . 484--486
A. P. Peck Television's Progress . . . . . . . . . 487--487
Reginald M. Cleveland Giant Airplanes . . . . . . . . . . . . 488--490
Anonymous Award of the \booktitleScientific
American Medal . . . . . . . . . . . . . 491--491
Horace H. F. Jayne Behind the Scenes in Modern Archeology 492--494
Anonymous Timing the Schneider Cup Races: Over 300
Miles Per Hour . . . . . . . . . . . . . 495--495
Henry Norris Russell The Puzzles of the Comets --- II . . . . 496--497
Howard T. Cervantes Radio in 1930 . . . . . . . . . . . . . 498--500
Anonymous Largest Electrified Metal Mine . . . . . 501--501
Anonymous From the Archeologist's Notebook . . . . 502--503
Lester D. Seymour Insuring Safety on Airlines . . . . . . 504--507
J. Reid Moir The Art of Pliocene Man . . . . . . . . 508--509
C. W. Geiger and
Ruth Sabichi Esthetic Engineering . . . . . . . . . . 510--512
Anonymous When the Dining-Car Staff Goes to School 513--513
Alexander Klemin American Passenger Air Transport --- III 514--517
A. E. Cripps Wires and Cables for a Great Bridge . . 518--520
Milton Wright Rebuilding a Broken Business . . . . . . 521--523
Anonymous The Amateur Astronomer . . . . . . . . . 540--541