INDEX TO VOLUME 91
��Page The Poison Gases that Kill Men in Trench Warfare 24
Big Steel Guns and How They Are Made 38
A New Caterpillar Truck 57
A Submarine's Trip on Land 58
Fire-Crackers to Ward Off Submarines 59
Our Unsinkable Cargo Fleet 63
An Inverted Periscope Used Under Water 68
The Shoe Hospital of the Allies 61
California's Conception of a "Tank" 67
Millions Spent for Shells 70
A Signal Gun 71
Conserving Wheat with Alfalfa 72
An Electric Rammer 80
Motor-Boats for Submarine Chasers 82
Dummy Guns Train England's Gunners for the Sea 94 To Save Money During War Time Why Not All
Dress Alike 1 00
The U. S. Armies Prepare to Fight Germs 106
Protecting the British Fleets with Chain-Nets. ... 112
Separating Russian Prisoners from Vermin 119
Drag-Bombing Submarines with Airplanes 163
Handling a Submarine 1 68
The Time Fuse and How It Works 192
Antiseptic, Anaesthetic Bayonet 216
A New French Word "Camouflage" 217
The Onerous Task of Rejecting Recruits 218-219
The New French "37" 220
A Great Map of Warring Europe 222
An Automobile-Mounted Machine-Gun 226
How the Germans Mutilated Their Boats 230
The Largest American Flag .' 245
A New Method of Foiling Bomb-Droppers 247
Applying the Idea of the Needle Bath in Shell- 1
Making. 248
An Army Tool-Shield 266
Figures That Give An Idea of the Task of Trans- porting Our Armies 27 1
Why Not the Land Torpedo? 323
A Target Which Answers 349
A Visor for the Helmet 350
The Marines Sleep on Their Life-Prese. vers 354
Hurling Barbed Wire at the Enemy 355
The Primer of the Giant Shell 36 1
The Biggest Red Cross Flag 369
Details Involved in Making Shrapnel 369
Target Practice with Coast Defense Guns 369
Moving a Piano Across the Sahara 378
Desert Sandshoes 379
The Mother of the Submarine 380
Italian Soldiers Paint Their Faces 382
Rifle-Firing Kinks Taught West Pointers 383
Body Armor for the Soldier 389
Newspaper Torches 390
Testing the Hearing of a Soldier. 392
Revolver Machine Gun 393
How the U-Boats Get Through the Nets . 395
Khaki Has Been Used Since 1848 401
All Around a Battleship 402
The War Dress of the New Guinea Soldiers 406
Demolishing Cottages with a Battering Ram 409
The Detonator Head 419
A Million Dollars a Year to Paint Our Navy 424
Thrusting Spears for Cavalry 430
Military Marching for Beginners 475
Is This the Machine-Gun of the Future? 483
Three Million Pairs of Shoes Ordered for the Army 507 Firing Shells Charged with Gasoline Which Ignites
on Impact 507
Will the Shell Burst When It Is Fired? 513
The New Enfield Rifle 518
A Shock Absorber for the Soldier's Kit 521
Statistically, What Is Your Chance of Being Killed
in This War? 532
The Camouflage Soldier 533
Saving the Food Cargo of a Torpedoed Ship 540
Forty-Three Bombs in a Freight Car of Scrap
Iron . 542
The "Red Cross" for the Soldiers; the "Red Star"
for Their Steeds 544
The Carrier Pigeon Still Holds Its Own as Trusted
Messenger 554
Shoot or Stab This Dummy, and an Explosion
Occurs 555
Megaphoning the Reveille 568
Fighting a Gas Attack in the Trenches 580
Moving Targets to Quicken the Eye and Steady the
Aim 585
��What You Will Need When You Go to Training **
Camps 596
Gun-Buoy for Repelling Submarines 643
A Merry-Go-Round for the German Soldiers .... 644
A Leopard Ship of the Sea 645
A Versatile "Helmet 646
Cowards in the Armv Are Rare 646
Fighting at Night with Searchlight Torpedoes. . . . 680
What's Wrong with the Submarine? 682
Medical Men in the Army 685
Packing Chocolate in Sausage-Links 685
Shells with Scissors Attachments That Cut Wire
Entanglements 686
Portable Army Bread-Mixer 689
Catapulting Seaplanes from U-Boats 696
Identification Rings for Soldiers 699
A Shoe-Repairing Truck for the Army 700
Guarding Venice 706
The New Service Flag 707
Assembling Torpedos 717
A Temporary Tombstone for the Unexploded Shell 721
Paper Uniforms for German Soldiers 728
A Bullet That Flies Like a Comet 729
The Machine-Gun Principle Applied to the Revolver 730
Eliminating the Periscope from the Submarine. . . 731
Men Who Ought to Make Good Rifle Shots 732
Business Is Booming in War Horses and Mules. . . 736
Three Shots with a Single Shell 739
Will a Projectile Fly True? 743
A French "75" Anti-Airplane Gun with a Camou- flage Dressing 744
How a Fighting Dummy Teaches Men to Use the
Bayonet 824
Steel Castings for Modern Dreadnoughts 827
Reaching the Soldiers, Wounded Far Up in the
Mountains 839
The Unsinkable Submarine 840
The Possibilities of a 60-Inch Gun 844
Testing Shells for Hardness 847
The French "Horizon Blue" Is the Best Color for
Uniforms . . 848
What Defective Ammunition Means 849
New Motor Truck Kitchen 851
Blinding the Enemy with Searchlights 859
A Bomb in a Piano 865
Dummy Airplane Targets 866
A German Military Obstacle 869
The Latest Sea Camouflage 876
Protecting Battleships with Compressed Air 886
German Trenches as Comfortable as Houses 889
England's Great Under-Sea Walls of Bombs 915
MOTOR VEHICLES AND THEIR ACCESSORIES
A Hint to Motorists — Keep Your Radiator Clean 7
Differentiator Motor Vehicles 30
Automobiles, Motor-Trucks and Accessories. . . .34-35
Measuring Motor-Truck Loads Automatically. ... 36
The Youngest Manufacturer of Automobiles 48
A Solution to Tire Troubles 58
Auto Engine Cooler on Steam Ejector Plan 62
Transforming an Auto Roadster into a One-Ton
Truck 73
A Ten-Ton Motor-Truck on Eight Wheels 88
A New Type of Transmission Employs Cork Inserts 1 00
The Problem of the Automobile Top :••.••• '02
A Community Garage Comprises Fifty Buildings
on One Lot Ill
Making the Acetylene Light as Brilliant as the
Electric Lamp 120
Combined Ice-Box, Pantry and Trunk for Autos. . 165 Testing a Car's Power to Pull Itself Out When
Stuck 167
A First Assistant to the Motorcycle Cop 169
The Automobilist's Mechanical Cost Keeper 186
A Folding Crib in the Automobile and Summer
Camp 191
A Funnel Will Fill Up Your Automobile Tank
Without Spilling the Gasoline 193
Automobiles, Motor-Trucks and Accessories. . . 194-195
Convenient Automobile Doors 224
Automobile Run on Alcohol 229
The Cost of French Army Cars 233
A Keyless Lock for Your Ford 236
Auto Engine Cooler Operates on Steam Ejector
Plan 246
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