Page
An Iris Diaphragm for Front and Rear Lights. . . . 535
Loading a Revolver in Two Seconds 535
Lubricating a Rifle Barrel with a Graphite Cart- ridge 535
Mechanical Helps ^'^^lll
Liberty's Torch ■ • 552
Strap It on Your Neck and Cut Your Hair Yourself 565 Whiz, Whiz Goes This Electric Buzz-Saw as It Cuts
Up a Beef Carcass 569
A Perfume Spray from a Penny Slot Machine. . . . 579
Loading Ashes by the Sky Route ._ 581
Shave Yourself with a Buzz-Saw — That's the
Newest in Razors • 585
A Machine Which Automatically Feeds Twine and
Cuts It 587
It Takes Four Thousand Characters to Typewrite
in Chinese 599
Foiling Torpedoes with Whirling Plates 643
Handy Mechanical Appliances 694-695
The Single-Man Tank 702
Five Hundred Miles an Hour 705
A College-Factory Engineering Course 724
Open the Door and Wind Up the Clock 725
Ejcit the Stevedore 736
A Mine-Car Which Unloads Itself 737
A Bridge of Cables. Boards and Chicken Wire 760
A One-Man Tree-Felling Saw 851
New Mechanical Appliances 852-853
Sorting Mail with a Typewriter 854
A Re-Inking Typewriter Roller 855
A "Community" Power Plant 867
A Trowel Which Places and Molds Concrete Curbs 890 Drilling Holes in Concrete on a New Principle. . . 891 The Intelligent Trough. It Measures Out Water
to the Thirsty Animal 895
This Contractor Carries His Power Shop to His Job 895 Freighting a Steamer by the Marine Elevator. . . . 908 A Pigmy Electric Crane with the Strength of a
Giant 912
��MEDICINE. SURGERY AND HYGIENE
Don't Shoot the Dog — Help Him as If He Were
Human 3
A New Method of Identifying Infants 41
A Supporting Harness for the Wounded 47
A Machine that Massages Your Pains Away 66
Every Time We Wink We Give the Eye a Bath . . 68
A Peculiar Disease of the Teeth 165
The Lesson Denmark Taught with Calves 182
A Fountain Tooth Brush 194
Mr. Average Healthy Man's Enormous Appetite. . 195
A Combination Comb and Toothbrush Holder. ... 197
A Flag- Waving Device 216
Simple Method for Pasteurizing Milk 216
Food Inspection in New York 222 223
Taking Turkish Baths in Your Own Home 237
A Convenient Holder for Dental Floss 280
A Stimulating Climate May Be the Cause of Suicide 280
A Tooth-Brush Drill for School Children 325
Teaching Health Lessons with Automobiles and
Motion-Pictures 344
Digest Your Food Electrically! You Can Do It
with a Wireless Apparatus 345
Helping the Deaf to Hear with a New Electrical
Ear... 353
Our Invisible Friends and Foes 366
Grafting with Frog's Skin 382
Artificial Feet of Paper Pulp 395
A Special Shampoo Chair and Basin 400
Curing the Insane with Water 401
Portable Moving Platforms 405
A Stretcher Which Parts in the Middle 406
Curing Rheumatism with Radium 415
Supporting the Arch of the Foot with an Elxtra Heel 429
Pneumatic Tires for Your Shoes 436
A Tooth-Brush with a Removable Bristle-Pad. . . . 456
Breathing by Machinery 528
Fighting General Typhoid 531
The Bicycle to the Rescue in Leg Treatments. . . . 576
Bathing in Melted Wax 578
Rag-Time Music as an Adjunct to the Operating
Table 585
Giving the Teeth a Clean Sweep with a Rotary
Tooth-Brush 587
��Page Massaging the Digestive Organs by Deep Breathing 664
A Toy Field Hospital for an Object Lesson 673
Testing the Op)€ration of Wooden Feet and Legs. 681
A Gentle but Firm Restrainer for the Insane 726
Getting Rid of Vermin in the Trenches 742
Restaurant Waiters and Cooks Must Be Mani- cured 805
Fruit Acid, a Good Mouth Cleanser 828
Ultra- Violet Rays for Bald Heads 880
Rubber — An Armor Against Disease Germs 894
A New First Aid to the Fractured 916
��MOTOR VEHICLES AND THEIR ACCESSORIES
A Junior Runabout 3
No Danger of Falling from This Motorcycle 5
The Motorcycle Becomes Popular for Sledding ... 50
Turning a Motorcycle into a Motor Ice-Sled 50
Making a New Motorcycle Record 51
Smoothing Skating Surfaces with a Motorcycle Ice
Plow 51
Combining the Garage with the Home 52-53
Picking Up Tacks in Front of Your Automobile. . 72
Putting Railroad Wheels on Automobiles 82
Automobiles, Motor-Trucks and Accessories. . . .84-87
A Junior Runabout 106
Saving Tire-Money 107
A Wooden Boulevard Over the Desert 116
Climbing Out of a Mud Hole 118
Making the Automobile Do the Chores 119
Paper Funnel for Use in Place of a Grease-Gun. . 122 Automobile Luggage-Carrier for the Running
Board 126
A License-Tag Holder for the Front Axle of an
Automobile 126
Repairing the Torque-Rod Support of an Auto- mobile 1 28
How to Build Bucket Seats for Automobiles 142
Why the Tread on Repaired Tires Fails to Stick. . 143 Substituting Steam for Gasoline in Automobiles. . 184
Demountable Road-Oiling Tank 189
The Road-Rail and Its New Truck 192
Convert Your Bicycle into a Motorcycle 195
New Type Motorcycle Uses Two-Cycle Motor with
Magneto in Flywheel 200
A Hot Plate Camp Stove for the Automobile Tourist 206 To Uitload This Truck You Tilt the Platform ... 208
You Can See Gas in This Station 216
Standardizing Our Automobile Shop Language . . . 230
An Armored Motor-Car for the Navy 231
Low-Bed Truck Steered by Huge Bull Wheel ... 244
Removable Steering- Wheel to Foil the Thief 251
Automobiles, Motor-Trucks and Accessories. . .252-253 Bringing the Steering Wheel Back into Position
Automatically 258
A Grocery Store on Wheels 267
Motorcycle Lamp and Horn Combined 270
Opening Automobile Doors by a Foot Lever 272
An Oil-Gage Made from a Broomstick 283
What Do Your Tires Cost You a Mile? 284
Removing Automobile Engine-Valves Enclosed in a
Sleeve 290
A Motor-Manikin Which Waves Its Arms and Yells 344 Teaching Health Lessons with Automobiles and
Motion-Pictures 344
Hoisted by an Automobile Into the Clouds 352
A Pushmobile De Luxe for the Youthful Speedster 356 Making the Front Axle Help Drive the Automobile 357
The Workingman's Automobile 357
A New Ball Differential for Automobiles 360
Combined Brake and Non-Skid Device for Auto- mobiles 362
Light Railroading Accomplished by Automobile . . 362 Another Addition to the Motor-Bicycle Family. . . 363
A New Type Motor-Truck for Coal Delivery 363
Automobiles, Motor-Trucks and Accessories. . . .364—65
The Automatic Traffic Controller 382
Learning to Drive an Automobile 385
A Model 600-Car Garage 386
An Electric Vulcanizer 391
Sacrificing Diamonds for Accuracy in Manufactur- ing Automobiles 406
Operating an Automobile Steering Wheel with
Oil.. 412
A Burglar- Alarm for the Automobile 416
An Automobile Salesroom on Wheels 422
New Motorcycle with Horizontal Opposed Motor. 427
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