Popular Science Monthly 



INDEX 



Volume 88, January-June, 1916 



AERONAUTICS Page 



The Death Toll of Our Misspent Aeronautic 



Appropriation 90 



A Spanish Lesson in Aeronautics 1 08 



50,000 Bird Men Now Are Flying 248 



Government Manufacture of Aeroplanes — A Na- 

 tional Menace! 249 



Aeroplane Drift 265 



Delivering Mail by Aeroplane 341 



Destroyers of the Air 351 



Nine Thousand German Aeroplanes 368 



A Pigmy Zeppelin 483 



Destroyers of the Air 537 



Militia Aero Corps 644 



Captive Balloon Teaches a Lesson 693 



Catapulting Seaplanes from Battleships 713 



Punctured Zeppelins 882 



Air Raids Involve Problems Hard to Solve 897 



AGRICULTURAL SCIENCE 



Monument Built to An Apple Tree 19 



Giving a Pear Tree New Roots 55 



Farming on a Precipice 63 



How Gulls Help the Farmer 78 



A Hog-Pen That Counts Hogs 105 



A Feed Hopper for Chickens . Ill 



A Trolley for the Stable Lamp 112 



Lady Eglantine: The One-Hundred Thousand 



Dollar Hen 324 



Simplifying the Inspection of Farm Produce 385 



A Dollar Made of Corn 391 



Straw-Stacker Does Away with Man and Pitchfork 504 



Making a Hen Lay Self- Preserving Eggs 507 



A Whole Garden Kit in One Tool 565 



Digging Fence-Post Holes by Means of a New 



Machine 565 



Stretching the Wire Taut 566 



For Gathering Fallen Fruit 566 



Taking the Bump Out of the Barrow 567 



Making a Disk-Sled of a Harrow 567 



Fertilizing Two Rows at Once 574 



An Automatic Animal Fire Escape 652 



Teaching Hens Good Manners 667 



Poison Gas for American Pests 735 



Hog-Power in the Hog-Pen 740 



Maud Muller Up to Date 746 



Rough on the Hen — but Useful . . '. 757 



Keeping the Cow's Tail Out of the Milk Pail .... 758 



An Ear-Corn Feeder for Hogs 793 



Trench-Digging by Machinery 830 



A New Powerful Farm-Tractor 857 



Drying Cattle Hides in a Broiling Tropical Sun. . . 862 



ARCHEOLOGY 



An Ancient Wooden Leg 29 



Was This the Tower of Babel? 89 



ASTRONOMY 



Is Mars Alive? 188 



Why Is the Sun Hot 390 



Measuring the Light of the Stars 824 



AUTOMOBILES AND ACCESSORIES 



An Armless Man Drives a Car at Racer's Speed . . 8 



Imitation Hand Signals a Turn 9 



An Automobile Show Case 24 



Using an Automobile as a Winch 28 



A Jack-of-all-Tradcs Truck 53 



A Need for Electiic Rickshaws 53 



Cripple Makes a Fortune with Tri-Car; Then Runs Page 



for City Council 58 



Logging with Tiactors in the Maine Woods. . . 67 



A Sleigh Motorcycle 75 



Keeping the Motorcycle Busy 75 



Indicator Tells Puisuing Police Speed of Auto- 

 mobile 75 



Ingenious Slide Rule for Motoiists 76 



Maud, the Motor Mule, on Our Cover 87 



A Gasoline Field Kitchen 93 



Motoi Car Bodies of 1916 — Good and Bad 98 



Adapting Tire Inflaticn to the Load 104 



Don't Decarbonize Aluminum Pistons I iO 



Cleaning New York's Snow-Clogged Streets with 



Motor-Trucks 165 



Tearing Up Rails with a Motor-Truck 168 



A Motor-Cycle Converted into a Motor Sled. ... 169 



A Mile-a-Minute with an Air-Driven Sled 184 



A Novel French Motor Tricycle Sweeper 210 



A Racing Car Built of Tires 223 



And Now Comes the Front- Wheel Drive Motor- 

 Cycle 260 



Making a Tire Casing 261 



Josef Hoffman Invents a Pneumatic Shock Ab- 

 sorber 262 



An Improvised Trouble Light for Motorists 266 



Adjustable Auto Foot-Pedal for Short Drivers. . . . 268 



Extra Seat for Ford Cars Hangs on Door 268 



Folding Motor Bucket Is Also Game Bag 268 



Switch Detects Bad Ignition 294 



Motoring on Skiis 334 



Protecting the Motorist on Dark Roads 336 



A Trolley Company Which Repairs Automobiles 



Damaged by Its Cars 342 



Spreading Sand Over Oiled Roads by a Motor 



Attachment 368 



A Convenient Step for Automobiles 369 



Pull Yourself Out of the Mud 369 



A Cold or Wet Weather Suggestion for Motor- 

 cyclists 371 



Automobile and Tractor, Too 371 



Running a Newspaper Plant with an Automobile. 382 



An Automobile Machine-Shoo for the Battlefield. 392 



A Steel Hill to Test Automobiles 393 



A Military Automobile from Fittings 409 



This Automobile Signal Takes the Place of Your 



Hand When Rounding a Corner 410 



A Novel British Piston Ring 411 



Delia the Motor Duck 422 



Vulcanizer for Tire Repairs on the Road 433 



An Electric Heater in the Garage Makes Cranking 



Easy 455 



Small Motor-Trucks Deliver Coal Cheaply 488 



Motor-Cycle Helps Light a Town 494 



Gaiters to Protect the Spring-Leaves of Auto- 

 mobiles 505 



A Quaint Advertising Automobile 508 



Gravity-Flow Gasoline Supply Station 508 



A Portable Wrecking-Truck 508 



Woman Invents a Lite-Saving Device 509 



Motor-Testing Up to Date 510 



Convenient Flashlight for the Automobilist 535 



An Automobile Converted into a Railway Ore- 

 Tractor 541 



With a Trans-Continental Burromobile 542 



Gasoline Horses tor Small Farms 545 



Shelter-Top for London's 'Bus Riders 559 



A Detachable Motor for Bicycles 560 



Why the Automobile "Goes Dead" 564 



Attaching Tires to Their Rims Easily 572 



Taking Off the Tire in a JilTy 574 



Small Racing Automobiles for Boys 581 



Interchangeable Motor-Car Grease-Capsules. . . . 586 



A Disappearing Automobile Top 587 



