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��INDEX 1() \()LI MK
��SK
��Page A Safety-Bicycle for the Timid Fat Man 572
Huntmg Destructive Animals in National Forests 576
A Warning to Fishermen 59O
The Sidewalk Coaster Becomes an Automobile 592
1 raining the 1-ootball Tackier (,4}
Letting the Jumping Rope Record the jumps 546
gtilt-bkates for Ice-Skating (,4j
Scoring Target Practice by Telephone , , 682
llniliig Automobile Speed Demons. 806
A Bicycle Which Won', Let You Lose Your
tlalance 015
Trapshooting in the Navy ni 7
Marathoning at Home on a Special Tread Mill ' 844 A Dozen Ways of Breaking Your Neck. 860
Renovating the Old Golf Ball 894
Johnny Blows Bubbles from His Toy Cigar 894
loys Which Instruct as Well as Entertain 902^905 A tJufter to Stop Sprinters in Indoor Sports 932
Building a Speedy Ice- Yacht 94I
THINGS THAT MAKE FOR EFFICIENCY
Lighting the Inside of an Oven 16
A Measuring Machine More Sensitive Than a
Human Being tf^
A Mechanical Whip .' .' .' .'.■■.■.'.■.■ [7
Hearing Your Men at \X'ork .......'.] 3O
Interchangeable Pressing and Steaming' Device for
i ailors ^n
Fighting Timber Fires A3
T^?,'^',"^" ^?."' "' Chicago's Wheat-Pit'.' .'..'." 81
A Wallpaper Remover | I9
Modern Dog-Catchers Use Motor-Trucics j 76
Extinguishing an Oil Fire with Carbon-Dioxide
roam t yo
The Motor-Cycle Street-Sweeper 200
A Machine that Stitches Baseball Covers! '...'.'. 203 A Step-Ladder with An Ambition . 230
Taking the Smoke Out of the Smokiest City 236
I he Burglar-Proof Store- Window 238
Safety Shaving with a Lamp Attachment 247
A Handy Shoe Cabinet for the Whole Family 256
Cover Lift for Cafeteria Platters 3|4
WAR PROBLEMS IN AMERICA
The Mine That Hears 3
Six Battleships Co Into Reserve 53
The Feminine Gender of Preparedness .......... 71
Throwing a Line of Communications Across a River 1 79'
Pneumatic Gun with a Dynamite Shell 192
The Submarine Blockade Runner, 227 Putting the Rookie Through the Mill at Platts-
-r, V/ , ;, , 268 269
I he Motorcycle Machine-Gun 529
The Night Eyes of the Coast Artillery, . . ....'... 586
Our First Armored Car 588
Introducing Our First Anti-Aircralt Gun 657
Collecting Money for Belgians by a Sidewalk Chute 668
I he I housand-Foot Battleship 670
Defending America with Motor Torpedo Boats. '. 721
Saving Men from Sunken Submarines ] 803
WiKwagging with Hand Flags 807
T'l?'"! J 0°'," °' '^"'omob'le Tires at the Front 810
A ■eld Refrigerator for the Camper or Soldier. 831 What Happens in the Stokehold of the Speeding
Destroyer 839
The Giant Destroyer of the Future '. '. . . . 897
MISCELLANY Government Guide-Posts Give Detailed Informa- tion for Strangers 7
How Sea Caves Arc Made 21
A Lamb with Two Coots of Wool ....'.'..... 21
A "Shoo-Fly" for a Candy Kitchen 28
A Protecting Holder for an Opcn-Foced Watch 29
Nations Bleed in Peoce as Well as in War 62 The Official City Fly-Catcher of Redland.;
California 64
PreporednesB Against Bank Burglara ....... J. . 74
Experimenting with the Siphon 82
New York Is the World's Luxury Market . 83
Dipping Elk to Rid rhcin of Ticka 88
Ostrich Sc|uab: A New Delicacy i . . 88
Tile Ama/ing Beetle!.!***' 94
1 nsect Carpenters ond Masons .'!,'!!! 95
Air-Propeller Drives Birycjc!!]!]!!! 97
Electric Plant Run by cin Arteaian Well '.'...'. 97
Straw Rnincontn of Japan |0|
��Page What? Only Three Kinds of Feet? in
Mn<in..;> . C II I 'V
��Mosquitoes on Snow Banks
\ Watch-Like Coin-Case
Fish Hatched in Artesian Basin
5°" '.?,^'" Graduate from Carlisle.
��06 106 107
08
��Prize Winners of Sam Loyd's Puzzles I|2
We Paid Six Dollars for These Two Pictures " 161 How the Porto Ric.n Does a Pushing Business. .! 173 Blending Twelve Grades of Oil Into One 174 A Perfect Megaphone Shaped Like a Ram's Horn 175 I he Cockroach Attract, Attention as a Trouble- Maker .y.
Origin of Gas Jets Traced tn Woman's Thimble ' .' 177 lUlow-Pipes of the Born^-o uand Dyaks I79
Throwing a Line of Communications Across a River I 79 w/ j"?^'° P "^ Convalescent Soldier (83
Wind Cave Excels Mammoth Cave ' |83
^ 9'.7-?=» F-'f" *}i^.l> Has a Lantern of Its Own 185 A Sailor s Nautical Wind- Wheel |85
If We Had Eyes Like Microscopes . . |90
Trapping English Sparrows for Food |94
How a Snails Tongue Cleans the Aquarium .'.'..'.' 195 Machines 1 hat Smoke Cigars 196
A Mud Mosaic in the W'ake of the Treacherou.
Colorado iqy
Rocks Composed of Diatom Earth Which Float 197
t-ighting the Sand Peril ' |9g
Device to Hold Covers on Sleeping Child in Crib ' ' 200 A Luminous Life-Belt for Rescue at Night 201
Seeing Yourself as the Oil Well Sees You .... " 201
Trapping Animals by "Caming" Them 203
^" iP .Lamp Used by Rubber Gatherers in
Brazilian Jungles 224
Where Freckles Come from and Why They Stay! 224
Piano and Phonograph Combined ] 225
Surviving Horse-Car Lines in the United States 231
Coal-Dust Mountains " Are Now Repositories of
Wealth 235
Why a Grasshopper Is Like a Telephone Lineman 241 Hitting the Trail with a Wheel-Barrow and
Determination
What Makes the Hair Suddenly Turn Gray? . Signaling with a Mirror to Men in the Field Why You Can See Two Sides of a Thing at the
Same Time 252
What's the Good of a Hawk? ........[ 254
Wolves of the Sea That Abound in Ci^ban'Wctera 255
Convenient Check Protector 307
A Machine that Cracks Oil-Bearing Nuts Without
Crushing Them 326
And It Looks so Small on the Map! ... 329
Making the Scallops on Plate Glass 330
Hungarian Nectar Still in Which Rhubarb Brxiidv
Is Made ' 33}
Shootiiig the Chutes to Safety in an Explosion ... 360 A Castle Built of Coal to Advertise the Resources
of Tennessee 36
Defying the Action of Fire 366
A "Soap" Which Is Not Used for CJeansing' '.'."'. 370 Catering to the Feminine Patrons of the Bootblack 371 Increasing the Decorative Value of Portieres . 374
Using the Waste Heat of a Kerosene Lamp 375
The Sensitive Brazil Nut 380
A Hand-Made Hand-Played Phonograph!!!!!!!! 381
Your Meerschaum Pipe 382
The Story of f-'ctroleum!!!!!!!!!! 385
A Rapid Firing 1 .ife Saver!!!!!!!! 389
A Level and Grade Finder on the Periscope
Principle • 30O
Plenty of Room for All Europe ... 431
New American Porcelain Utensils a Result of the
��241 247 252
��Wa
��431
��Spontaneous Combustion!!!!!!!!!!! 435
Tracing Magazine Cuts 436
Steel Cutlery Which Will Not Rust!!!!!!!!!!"! 485
And 1 his in a Mechanical Agel 503
A Famous Outdoor Organ!! ' ' ' ' 510
The Money Value of Iwo Great Discoverieii!!!! 511 Shipoing .Sugnr-Coatcd Education by the Trunkful 5l'l It Was a Man Dressmaker Who Invented This .514 What Is the Leaning Tower of Pisa Compared with
This? .... . , i;^,.
Using the Steam Radiator to Remove Wall-Paper 5(4 Dropping 10 Safety Irom a Fire 5(,s
Pumping Up Flis Interest in Your Wares .!.!!! 567 Where the Linen Collar Started and Who Started It 56R Krnioving I ligh l.nnip Riillts 171
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