INDEX TO VOLUME J) 2 



Page 



Locating Splinters 646 



Pocket Drinking-Cup Folds Up Like Purse 682 



Bacteria Die in the Light 713 



Model of Jaw for Study in Dentistry 717 



Let Vour Feet Breathe 720 



A Thousand Dentists in the U. S. Army 723 



Tilting End-Pieces for Your Eye Classes 747 



Leglessness Is No Drawback 753 



No Race Suicide Among the Bacteria 759 



Old Age Is Not a Matter of Years. But of Recupera- 

 tive Power 807 



Bathtubs for the Eyes 836 



Repairing the Ravages of War 874-75 



Beware of the Perils of the High Heel 905 



Fasting Is Not What It's Cracked Up to Be 917 



MILITARY AND NAVAL SCIENCE 



The Latest Thing in German Sniper's Masks 



Warning London of Zeppelin Raids 



Loading Machine Gun Cartridge Belts with 



Rapidity 



Plumbers Will Plumb — Even 'n Army 



Voice Pipes for a Ship's Gunners 



The Liquid Fire of the Trenches Is Not So Deadly 



as 1 1 Looks 



Training "Tommies" to Lay Wires in the Dark. . . 



You Can Be Your Own Gunsmith 



Out-"Minening " Minenwerfers . . 



The Soldier Can Now Lie Down on His New Bed 



of Air 



The Unforgettable Fact — The Murder of France's 



Churches . 



Pulling Horses Out of the Mud in Stricken 



Flanders 



The Mechanical Owl of the French Army 



Circular Barbed Wire Entanglements 



A Toy Machine Gun 



A Submarine for One Man 



A Metal Mirror 



Bubbles in the Blood Kill Soldiers 



A Camouflaged German Observation Post 



Cone-Shaped Helmets 



A Soldier's Fignting Equipment 



Paper Bullets 



Making the Machine Gun Noiseless 



Is the Wind Right for Gas? Look at the Trench 



Weather Vane 



It's a Land Torpedo and It Eats Barbed Wire . . 

 Cleaning a Rifle Barrel by Shooting a Cartridge 



Through It 



The Soldier's Belt Is a Chandelier 



Another Automobile Kitchen to Follow Our Boys 



at the Front 



Shielding the Munition Worker Behind Steel Walls 



A New Type of Joint Box Which Prevents Sub- 

 marine Cable Breaks 



Firing Bullets from a Slot at the End of a Shotgun 



The Soldier's Cobbler Kit 



The Camera-Gun 



Saving a Ship with a Metal Apron 



A Catholic IdentiTication Book for Mortally 

 Wounded Soldiers 



English Jackics Go to School 



Supplying Submarines by Trailer 



The Steel-Plated, Helmeted Knight of the Trenches 



Tent Stoves to Keep Our Soldier Boj's Warm in the 

 Training C'amps 



Making the Frenchman a Fighter 



Wire Cutter Attached to Gun 



Shells That Burn and Suffocate 



The Hell-Trench of the Piave 



How Ride Shells Are Loaded 



Giving France the Locomotives She Needs 



A Mirror on Your Bayonet 



Firing a Cannon from a Cannon 



Submarines to Foil Submarines 



The Giant Periscope 



Butchering an Auto to Make a Tank Holiday. . . . 



Can You Tell Which Part of These Ruins Is 

 Camouflage > 



Would She Be Crushed by the Sea > 



Clock of Klrrllirrn 



Allie<I ( Ountrirn Restrict Use of Gasoline 



.Safely f-irsl in Mine-Sweeping 



Selecting Men Made Easy 



A French Outpost Close to the German Lines .... 



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 63 

 64 

 67 

 67 

 69 

 69 

 71 

 78 

 79 



87 

 94 



97 

 102 



102 

 104 



105 

 107 

 112 

 118 

 163 



165 

 171 

 186 

 189 



195 

 198 

 202 

 203 

 220 

 222 

 232 

 237 

 241 

 242 

 260 

 324 



325 

 342 

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 351 

 354 

 359 

 364 



Page 



A Gun Which Will Lie Down 368 



Identification Tag for Navy Men 379 



Making a Trench Rifle Out of the Springfield 388 



A Navy Service Flag 400 



Why Not Hooverize by Eating Reptiles? 418 



Gunning for Aircraft — How the Italians Do it . . . 419 

 How Our German Prisoners of War Amuse Them- 

 selves . 424 



U. S. Government Tested Much War Machinery in 



1917 .• 435 



Netting the Airman 483 



Camouflaged Observation Towers from Which to 



See, But Not to Be Seen 485 



How the British Hauled Their Giant Guns to the 



Flanders Front 486 



Traveling with a Possible Earthquake 487 



Gulls Betray Presence of Submarines 505 



Great Catherine Is Veiled but Not Destroyed by 



Russian Revolutionists 505 



Our Artillery Shoots at Curling Smoke for Practice 506 



The Eyes in the Air 508 



Submersible Forts to Protect Coast . . 512 



Italian War Dogs Are Well Cared For 513 



Hiding Ships from Submarines 514 



Dropping Death from the Skies 518 



King Weather Rules the War 524 



Now Appears the Elephant of the Air 528 



Turn Your Coat Tails Into Trousers 537 



The Browning Gun 538 



Boxes of Air to Foil the Torpedo 544 



Hooverizing Daylight 546 



Eyes for the Navy Are Greatly Needed 549 



Remember the Old Checkered Linoleum? 552 



Sirens Give Warning ot the Approach of Raiders. 555 



Why Tanks Are Giant Caterpillars 556 



Trinkets and Jewels — Into the Melting Pot They 



Go to Help Win the War 560 



Dealing Death with Depth Bombs 562 



The War Hath Slain Its Millions, but the Nursery 



I ts Ten-millions 567 



Conquering the Pole by Airplane 572 



How Would You Like to Wear a Bell-Shaped 



Helmet with Shutters? 575 



Spotting Submarines from Balloon 578 



The Air Pilot's Flying Log Book 580 



The Motorcycle in Warfare 581 



The Automobilist's Automatic Pathfinder 582 



Heavy Artillery Is the Correct Weapon for Shoot- 

 ing Canaries 583 



Acetylene Trench Gun 586 



Torpedo-Proofing Ships with Air Tanks 587 



"Mothers" for Airplanes at Sea 590 • 



Two Hundred Aviators Lost in Year 594 



Bullets That Shoot Through Steel 599 



England Must Have Its Tea, Even If It Is War- 

 time 600 



Laundry for Forty Thousand Soldiers 644 



Soldiers" Waistcoats of Kid Gloves 645 



Dogs as Patriotic Helpers in a Good Cause 646 



No More Rubber Tires in Germany 646 



Chain Armor to Protect the Eyes 647 



Watertight Compartments to Protect Ships 667 



Lofty French Observation Point Near Dixmude . . 672 



British Dummy Battleships 689 



A Cylinder for Carrying the Wounded 6*JI 



Trees Felled on the Cambrai Road 691 



A Camp Picture F rame 696 



Seagulls "Spot " Submarines 698 



Insulating a Hot Rifle Barrel 698 



The Lombard Gun 699 



Shoe Protectors from Shell Cases 700 



A Floating Invitation to Suicide 705 



Our War Sugar Bowl 710 



Two Thousand Marines Form Eagle 713 



What Two 50-Dollar Liberty Bonds Will Buy. 7 14-7 I 5 



Walnut for Gun Storks 716 



A Queer Improvised Ambulance in Use in France. 721 



Some War Breads _^ 733 



Soldier's Combined Fork and Spoon 738 



Chemicals and Machines Supplant Men in War. , . 744 



War Sees Return to Ancicrit Weapons 754 



Army Horses Must He Good-Tcmpered 759 



War Provides an F^xpcnsive Clothes-Rack 759 



The Martyr Pigeon of the British Navy 805 



The Story of a wireless Hero 828 



Death Traps in Seemingly Unoccupied Fields... 851 

 Running Down a U-Boat with a Sub-Sea Barrage 854 



