XVIU
��INDEX TO VOLUME
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How the War Is Being Fought 193-209
Why a Bullet Seldom Shoots Straight 244
A Queer Adventure in War 247
The New Aeroplane Gun 336
How the War Is Being Fought 354-367
Train and Tent Baths of the Russian Army 370
Will Germany Live on Sewage? 380
Recruiting Britain's Army with Motor-Trucks.
Motion Pictures, Mirrors and Brass Bands . . . 387
The Cost of the War 398
Why Cotton Is Contraband of War 412
A Barbed-Wire-Proof Fabric 485
A Difficult Journey for An Army Tractor 490
Decoy Targets for Zeppelins 512
How the War Is Being Fought 514-527
The Allies' Losses 540
An Adjustable Crutch 558
Effects of the War on German Industries 567
My Adventures As a Spy 590
INDUSTRIAL CHEMISTRY
Bread Without Grain Flour 1 70
Hard-Pressed Germany Invents New Foods 237
Paper from Grass 248
INVENTIONS TO MAKE LIFE EASY
Burnishing with the Sewing-Machine 436
Cigar Tip Protector of Many Uses 436
Head-Guard for Alley-Boys 436
VIore Accurate Calipers 436
Trapping Mice in a Milk Bottle 436
Tricking Fish with Electric Minnows 436
Bicycle Frame Holds a Tire Pump 437
Collapsible Millinery for Traveling 437
A Cutter for Fiber Phonograph Needles 437
Holding Meat While Carving 437
A New Kind of Pin-Cushion 437
Preventing Furniture from Chipping Walls 437
Can Maidenly Modesty Ask for More? 438
Conquering the Obstinate Oyster 438
An Improved Potato Masher ■ ■. ^^
One Motion of the Handles Works These Scissors'
Blades Twice 438
A Paper Milk-Bottle with a Window 438
Salt and Pepper Shaker 438
Light Your Umbrella if You Are Afraid to Go Home
in the Dark 594
Signaling to the Driver Behind You 594
Pen Rack Removes Ink from Nib . 594
A Freight Hook of Many Uses 594
Do Not Wring Your Mop by Hand 594
A Fountain Tooth Brush 594
Adjusting a Shower Spray's Angle 595
Both Direct and Indirect Lighting 595
A Coffee Percolator in Your Cup 595
Blow Up Your Shoes with Air 595
A Vacuum Cleaner Dust-Pan 595
A Spring Cover for Milk Bottles 595
This Ice-Shaver Saves Muscle 596
A Foot-Propelled Motor Skate 596
A Tooth-Brush Which Fits Your Finger 596
A Policeman's Club Which Is Also a Gun 596
Chalking Billiard Cues Mechanically 596
Parting Thick Tresses 596
Adjustable Footrest 812
A Buzz-Saw Safety Razor 850
Fooling the Pickpocket 850
Straw Hat Insurance 850
A Tray to Hide Unsightly Cigar Ashes ■.■ ^^^
A Clean Way of Removing Pens from 1 heir
Holders 857
Learning Arithmetic with a Woman's Invention. . 869
A Purse Powder-Holder 884
Combined Eye-Shade and Program 905
The Fruit Picker's Sleeve-Chute 914
A Mitten-Duster 914
Muffler for Bowling-Pins 914
Packing the Things You Never Can Cram into
Your Suitcase 914
Safety-First for Window-Cleaners 914
Small Electric Heater _ 914
Down with the Portcullis, and Your Fis'i Is Caught 91 5
Improved Pocket-Knife Punch 915
A Magnifying Needle-Threader 913
Mattress Handles Lighten Housework 913
A Perfume-Wafting Fan 915
Telephone-Mouthpiece Deadens OutsiJe Sounds. . 915
Convenient Holder for Toilet Articles 691
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Cord Reel Is Telephone Convenience 916
The Mechanical Fly Swatter 916
An Umbrella with an Electric Fan 916
A Sanitary Butter Dish 916
Two Kitchen Forks in One 916
MECHANICAL ENGINEERING
A Machine that Chews Money 77
Using the Sun's Heat to Heat Water 79
Immense Watei Wheels Which Lift Their Own
Water. 82
A Windmill Which Always Turns in the Same
Direction 167
Steam-Driven Models Made by a Handless Me- chanic 1 68
This Belt Breaks All Records 1 76
What a Little Engine Can Do 212
A Machine to Pull Up Old Telegraph Poles 223
Sprinkling Streets with the Aid of an Old Fort. . . . 228 The Sculptor's Use of a Pneumatic Chisel for
Artistic Carving 229
Testing a Hack Saw's Strength 258
A Machine to Clean Blackboard Erasers 268
Sharpening Drills by Air 336
A Giant Grinder Which Goes to Its Work 338
The Hobby-Horse Turned Into a Swing 340
Lifting a Wagon to Dump Its Load 340
Spending Money by Machinery 346
Cleaning New York Streets with Modern Me- chanical Appliances 378
A Machine Which Climbs Poles 381
For Squeamish Fowl-Killers 409
Saving the Asphyxiated with a New Air-Pump. . 416
A Movable Storehouse Elevator 418
The Biggest Cast-iron Pipes in the World 487
Saves Work of the Book-Gatherer 489
Dumping a Whole Carload of Coal at a Time. . . 491
Machine Fills Cracks in Pavements 491
Suspension Bridges of Wire Fencing 495
Midget Crane Has Giant Ability 507
Riveting Without Rivets 509
Giant Ladle for Molten Cinders 542
A Magnetic Machine Which Saves Waste Iron , . 584 Climbing Steel Poles with the Aid of Special Shoes 644 Revolving Floor Puts a New Thrill Into the Dance 646 Doing Away with the Submarine's Storage Battery 654
An Auger That Works'Anywhere 658
Machine Shovels Faster Than Forty Men 661
Three Tools in One 668
A Machine Which Plugs Knot-Holes 730
Lifting Made Easy 732
Novel Box-Opening Knife 734
Saw Guard with a Clean Record 738
Pipe Bending — A Growing Industry 738
Wagon-Loader Resembles Gold Dredge 741
Eliminating Pottery Waste 742
A Locomotive Apron Lifter 764
An Automatic Pressure-Gage Alarm 781
Avoiding Groundings in Running Metal Molding
from Chandelier Outlets 785
Giant Press Used in Making Shrapnel Shells 815
Water Rises to Three Hundred Feet in New York
Sky Scrapers 833
How Record-Breaking Girders Were Handled . . . 863 A New Era in Water Power Begun at the Henry
Ford Farms 864
Niagara's New Air Route 858
MODERN MEDICINE AND SURGERY AND INDUSTRIAL HYGIENE
The Electromagnet in War 27
Why a Woman Can Outtalk a Man 53
X-Ray Finds Safety Pin in Baby's Throat 54
Hammering Spine to Cure Sick Heart. . . ; 55
Mercury Poisoning and Deafness — the Price of a
Derby Hat 68
A Walking Leg Bath 73
Hospital Work on the Firing Line 80
Why There Are Defective Babies and Monsters . . 83
An International Test for Vision ... 112
Does Your Child Suck Its Thumb? 334
Mending Bones with Rivets and Wires 337
Sleep in Hot Water to Rest Your Nerves 381
The Peril of the Fur Coat 383
Babies in Glass Cases 390
A Rowing Bath • 486
Making a Throat Examination Behind a Glass
Screen 497
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