# Popular Science Monthly/Volume 89/Index

Layout 4
I N D E X.
| | PAGE |
| Volume 89 — July-December, 1916 ||
| AERONAUTICS | PAGE |
| Yachting in the Air | 22 |
| Aeroplane Dreadnoughts | 75 |
| Torpedoing a Submarine from an Aeroplane | 323 |
| The Wastage of Flying Machines in the Great War | 377 |
| War Progress in Flying | 523 |
| Testing the Air-Fighter's Nerve | 580 |
| Testing the Lifting Capacity of Balloon Fabric | 586 |
| Introducing Our First Anti-Aircraft Gun | 657 |
| The One-Man Aeroplane Which a German Boy Is Building | 695 |
| The Sentinels of the Sky Above the War Zone Trenches | 839 |
| Making the Aeroplane Generate Its Own Power for Wireless | 842 |
| Faster Than the Fastest Express Train | 865 |
| AGRICULTURAL SCIENCE | |
| An Instrument for Plucking Flowers | 19 |
| A Workshop on Every Farm | 55 |
| A Flower Bed on Top of a Rock | 56 |
| A Unique Garden-Hose Holder | 56 |
| Conelike Flower-Holder in a Brick Wall | 63 |
| Filling Trenches by Machine | 94 |
| The Milk-Can Trolley | 100 |
| Chickens Feed Themselves on the Run | 110 |
| Measuring Rainfall on the Farm | 160 |
| Uncle Sam Says Miraculous Wheats Are An Old Delusion | 166 |
| Threshing by Night Under Electric Light | 166 |
| Why the Gasoline Engine Keeps the Farmer Boy at Home | 175 |
| Hitching the Mower to the Farm Automobile | 182 |
| Accelerating the Fruit-Picker with a Picking Harness | 185 |
| A New Garden Duster Which Uses Dry Spray | 195 |
| Plants on National Forest Ranges Which Kill Cattle | 252 |
| A Giant Cypress Tree Village in Paris | 267 |
| A Painless Way of Killing Chickens | 294 |
| A Simple Home-Made Milking Stool | 299 |
| Chick Mash Box | 301 |
| Improving the Hog's Table Manners | 306 |
| Uses for Wire-Glass on the Farm | 308 |
| Raising Parasites to Fight Pests | 368 |
| The Floating Vegetable Gardens of Mexico | 384 |
| A Garden Tractor which Does Everything but Mind the Baby | 410 |
| Rolling, Harrowing and Seeding with One Machine. | 417 |
| A Weed Destroyer from a Spoon and Broom-Handle | 468 |
| A Portable Colony Poultry House | 476 |
| A Cozy Southern Farmhouse | 479 |
| An Easily Made Self-Locking Device for Barn-Doors | 614 |
| A Combined Farm Implement Shed and Machine-Shop | 640 |
| The Largest Duck Farm in the World | 662-663 |
| The Handiest Bam Ever Built | 675 |
| A Humane Method of Destroying Horses | 684 |
| Cleaning and Sorting Beans by Machinery | 686 |
| Teaching English Girls the Art of Milking | 738 |
| Branding Animals with a Clamp-Button Monogram | 747 |
| An Alarm-Clock Dinner Bell for Old Dobbin | 779 |
| An Automatic Grain-Valve to Prevent Waste | 780 |
| Tropical "Snow Drifts" of Cheesecloth | 819 |
| An Adjustable Steering Device for the Tractor | 832 |
| Sheep May Not Like This But It Saves Time | 855 |
| Separating the Rooster from His Crow | 868 |
| Warning Herdsmen of Storms | 893 |
| Are You Paying for Your Farm or Is It Paying for Itself | 893 |
| Indoor Tomato Plants Fifteen Feet High | 895 |
| Valuable Products from Cherry Pits | 895 |
| An Anchored Hen House | 912 |
| Plans of a Small Modern Dairy Barn | 960 |
| ASTRONOMY | |
| Curious Set of Features Are New Markings on Mars | 225 |
| Lost Comets | 504 |
| Is Jupiter Launching a Moon? | 678 |
| Studying the Stars with Mirrors | 908 |
| AUTOMOBILES AND ACCESSORIES | |
| Automobile Scale-Demonstrator | 6 |
| A Duck-Boat as an Automobile Top | 14 |
| Portable Electric Tire-Inflator | 26 |
| Keeping Things Cold in a Real Automobile Refrigerator | 27 |
| A Record Motor-Truck Load of Barrels | 27 |
| How One Ford Got Up in the World | 28 |
| How Automobiles Innocently Break Windows | 31 |
| How an Automobile Engine Tests Water-Mains | 48 |
| What Make of Car Is It? | 72 |
| The Possibilities of the Ford Chassis | 84-85 |
| Semaphore Signals for Automobiles | 114 |
| Using Gates to Lessen Danger from Truck-Trailers | 116 |
| Lapping a Scored Automobile Engine Cylinder | 124 |
| A Handy Hook for the Automobilist | 125 |
| Trend of Motor-Truck Design Toward Worm Drive | 159 |
| An Air-Propelled Automobile for Three Dollars | 173 |
| The Reinforced Concrete Principle Applied to Automobile Tires | 182 |
| Automobiles. Motor Trucks and Accessories | 186-189 |
| Moving Guns with an Electric Battery Crane-Truck | 231 |
| Automatic Flagmen to Warn Motor-Car Drivers | 242 |
| A Gasoline-Electric Automobile | 253 |
| Lubricating Your Automobile | 262 |
| Starting Your Automobile with Ether | 307 |
| This Automobile Seat Serves as a Waiting Room | 332 |
| Economizing Gasoline for Automobiles | 355 |
| A Shim for Adjusting Plain Bearings | 355 |
| Automobiles, Motor-Trucks and Accessories | 356-357 |
| Fifteen Motor-Trucks in One | 358 |
| When the Horse Tops It Over the Automobile | 360 |
| Railroad Treads for Motor-Trucks | 391 |
| Motor-Trucks to the Rescue in a Freight Embargo | 412 |
| An Electric Motor-Chair | 412 |
| A Six-Wheel Automobile | 430 |
| Wiring the Ford for Magneto and Battery | 442 |
| Pumping Gasoline to the Motor | 508 |
| The Motorcycle Machine-Gun | 529 |
| Automobiles, Motor-Trucks and Accessories | 540-543 |
| "Troubleshooting" at Night | 544 |
| A Motor-Truck That Equals Two | 545 |
| The Wiles of the Automobile Thief | 560 |
| A New Gasoline-Motor-Driven Road Roller | 561 |
| Motoring on Roller-Skates | 569 |
| A Six-Mile Trip Through a Sewer on a Motor-Cycle | 574 |
| The Sidewalk Coaster Becomes an Automobile | 592 |
| Making Automobile Wheels Track Correctly | 593 |
| Quickly Adjustable Automobile Fan-Belt Fasteners | 604 |
| Loading Small Luggage on the Outside of the Car | 605 |
| How Piston-Ring Defects Have Been Overcome | 605 |
| Lightening Automobiles with Aluminum | 606 |
| Operating the Oil-Pump of an Automobile by Valve Action | 615 |
| A Watch-Carrier for the Motorcycle Handlebar | 615 |
| Easily Attached Shock-Absorber | 618 |
| How to Avoid Excessive Oiling in Cylinders | 620 |
| Spark-plugs Tested Without Removal | 621 |
| A Washstand Light for Garages | 645 |
| Charging Weak Magnetos of Weak Automobiles | 672 |
| A New Brake Which Makes Trucks Safe | 685 |
| Rubber-Ball Fender to Protect Unwary Pedestrians | 685 |
| Recording the Vibrations of a Motor-Truck Spring | 688 |
| When You Leave the Automobile, Lock the Robes! | 699 |
| Automobiles, Motor-Trucks and Accessories | 700-703 |
| The Automobile Street Car | 724 |
| Breaking a Mountain Trail | 740 |
| A Motor-Wheel for the Railroad Velocipede | 742 |
| Automatic Word Signals for Automobiles | 746 ​ |
| Timing an Automobile Race | 753 |
| Backing an Automobile into a Moving Garage | 755 |
| Constructing a Sidecar for a Bicycle or Motorcycle | 765 |
| Fillers for the Pedal Slots of Automobiles | 783 |
| Lubricating Automobile Spring Shackles and Bolts | 783 |
| Estimating the Speed of Passing Automobiles | 784 |
| Making a Sediment Pocket in Feed Line to Carburetor | 784 |
| Caring for Storage Batteries on Automobiles | 792 |
| Novel Method of Drive for Light Cycle-Cars | 806 |
| Timing Automobile Speed Demons | 806 |
| A Wonderful New Glass Which Cannot Be Shattered | 811 |
| An Automatic Safety Fender Sets the Brakes | 836 |
| A Floating Road for Automobiles | 864 |
| The Intelligent Motor Milk-Wagon | 869 |
| Twelve Cylinders or Six in One Car | 872 |
| Plowing Snow with Your Automobile | 882 |
| Automobiles, Motor-Trucks and Accessories 888 — | 891 |
| An Automobile Pump Drive from the Rear Wheel | 895 |
| The Tiniest Motorcycle to Be Used in the Army | 896 |
| Preaching the Gospel from an Automobile | 906 |
| Tank Trucks as Tenders to Submarines | 906 |
| Testing the Strength of an Ostrich | 907 |
| A British Motor-Bus Run on Coal Gas | 912 |
| A Motor-Driven Brake | 914 |
| Wire Wheels for Automobiles | 915 |
| Combination Lamp and Horn for the Motorcycle | 920 |
| Automobile Carbureter for Heavy Fuel Oils | 936 |
| BOATING | |
| Your Mainsail and the Wind | 49 |
| Forty Miles an Hour on the Water | 83 |
| How to Run a Motor-Boat | 112 |
| CHEMISTRY | |
| Asphyxiating a Fire with Sulphur | 884 |
| Producing the Coldest Cold | 916 |
| A Quickly Made Silver-Platng Powder | 937 |
| How to Handle Sulphuric Acid with Safety | 945 |
| CIVIL ENGINEERING | |
| The Destruction of the Exposition City | 8-11 |
| A Ticklish Moment | 29 |
| "Ironing Out" Earthquake Wrinkles in San Francisco | 31 |
| An Inverted Steam Hammer for Drawing Piles | 53 |
| Saving Hours in Handling New York Subway Dirt | 54 |
| An Excavator Which Walks | 61 |
| Electrifying the Clam-Shell Bucket | 87 |
| Making Water Pump Itself | 98 |
| A Damaged Lock Gate Repaired by Its Own Water | 234 |
| Lowering a Bridge Without Blocking the Traffic | 240 |
| Uncle Sam's New Dam at Elephant Butte | 259 |
| A Substantial Cableway Built from Scrap Material | 327 |
| The Senators' Subway | 328 |
| Bagging Rivet Heads with a Butterfly Net | 333 |
| Blowing Concrete into Place | 411 |
| Safeguarding the Sand Blaster | 418 |
| Building a Bank Around a Bank | 485 |
| Holding the Hudson at Bay | 537 |
| Road Construction Facts by the Wayside | 544 |
| Solving New York's Freight Problem | 546 |
| Ten Millions to Save Four Miles | 553 |
| Transforming a Beauty Spot into a Public Utility | 574 |
| A Bridge Five and One Half Miles Long | 583 |
| Strenuous Search for Durable Roads in a St. Louis Park | 672 |
| Giant Slabs of Marble to Commemorate Abraham Lincoln | 689 |
| Meerschaum as a Building Material in Spain | 689 |
| Boring Straight by Photography | 720 |
| Quebec's Disastrous Bridge | 728 |
| Cleaning Sewers from the Street | 838 |
| The Old-Fashioned Heavy Paving-Block Gives Place to a New Form | 844 |
| Taking the Temperature of a Dam | 866 |
| ELECTRICITY | |
| Welding Soft Metal to Hard | 17 |
| The Voice Typewriter | 65 |
| An Exciter for Electroscopes | 135 |
| Interference of Lighting Circuit by Static Electricity | 135 |
| Rejuvenating Electric Lamps | 135 |
| A Wet Battery from a Dry One | 135 |
| Electric Striking Mechanism for Mission Clocks | 137 |
| An Electrically Operated Device for Lighting Gas | 141 |
| How to Make an Attachment-Plug | 142 |
| A Model Electrical Hammer | 142 |
| How to Make an Electric Shaving-Mug | 143 |
| Testing Electric Lamps Quickly | 144 |
| Using Cartridge Shells for Electrical Contacts | 144 |
| A Hoop with a Guiding Hub | 152 |
| Perfuming and Cooling the Air with An Electric Fan | 175 |
| The King of New York s Lighting Spectacles | 177 |
| A Tool for Buffing, Drilling and Grinding Metal Surfaces | 192 |
| Toying with High Tension Currents | 248 |
| A Home-Made Edison Battery | 276 |
| A Clever Window Display | 277 |
| Five Examples of Alarm Work | 279 |
| Rectifying Alternating Current | 283 |
| Making an Electric Fire Alarm | 284 |
| Cutting Glass-Tubing by Electricity | 311 |
| A One-Eyed Mechanical Stenograptier | 335 |
| Why You Could Not Get Your Man on the Wire | 371 |
| An Electric Motor-Chair | 412 |
| A Convenient Arrangement for Turning on the Hall Light | 442 |
| Wiring the Ford for Magneto and Battery | 442 |
| A Simple Way to Construct a Ten-Ampere Shunt | 443 |
| Controlling Temperature and Humidity at the Same Time | 444 |
| Electric Substitute for the Latch-key | 444 |
| Making an Induction Coil | 446 |
| Magnet Winder | 446 |
| Dry Cells and Their Voltage | 446 |
| Utilizing Broken Marble Pieces | 446 |
| How to Rid Your Yard of Cats | 447 |
| To Stop the Milk Thief | 447 |
| A Simple Primary Coil | 452 |
| A Heat-Resisting Socket for High Wattage Lamps | 511 |
| Pocket-Flashlight Distress-Signals | 520 |
| A Hand-Magnet That Lifts Fifteen Times Its Own Weight | 536 |
| The Czar of the Power-House | 555 |
| A New Electric Cloth-Cutter for Small Shops | 564 |
| The Electrical Scrub-Woman — Brainless but Efficient | 566 |
| Small Electric Pump for Draining Seepage from a Cellar | 567 |
| A Voting Machine for Congress | 582 |
| Flood Lighting Niagara | 584 |
| The Nic:ht Eyes of the Coast Artillery | 586 |
| A Warning to Fishermen | 590 |
| A Photographic Printing-Box for Use with Electric Current | 601 |
| A Simple Tracing Method for Electrical Draftsmen | 606 |
| Tapping Field Telephone Wires | 622 |
| Tracing Initials on Tools with Electricity | 632 |
| Saving the Picture Show with a New Rheostat | 633 |
| A Combination Front and Back Door Alarm-Bell | 634 |
| Electric Burner for Making Storage-Battery Connections | 634 |
| To Change a Gas Lamp into an Electric Light | 635 |
| Lighting an Oil-Stove with an Alarm-Clock | 635 |
| A Simple Electrical Device for Purifying Water | 638 |
| Lifting Street Cars with a Powerful Electric Hoist | 673 |
| Electric Hand Lantern Costs Less than a Kerosene Burner - | 681 |
| Electric Ranges Are Becoming Popular | 681 |
| Electrolytic Extraction of Gold from Black Sand | 680 |
| Look Out Perhaps the Man You're Talking to Wears a Detectaphone | 687 |
| Protecting the Telephone Operator | 706 |
| Telegraphing Through the Ocean | 711 |
| Toys That Obey Your Voice | 718 |
| Miniature Magnet-Propelled Ships | 757 |
| Hearing Your Voice Through Your Bones | 142 |
| Manhole Ventilated with Electric Fan | 748 |
| Reducing the Furnace Man to a Mere Push-Button | 751 |
| A Magic Wand Which Changes Cold Water into Hot Almost Instantly | 752 |
| The Electric Thief-Catcher | 756 |
| How Electricity and Temperature Affect a Watch | 761 |
| A Hallowe'en Chamber of Horrors | 777 |
| An Improvised Coil Winder for Electrical Apparatus | 787 |
| A Home-Made Fuse for a Small Battery Current | 793 |
| Amateur Trench FJcctricians | 794 |
| A Danger Signal Used to Direct Attention Overhead Perils | 829 ​ |
| An Extension Reel for Electric Lamps | 843 |
| An Electrically Heated Foot-Board for the Policeman | 683 |
| Determining the Intensity of Illumination by a New Measuring System | 913 |
| Making an Electrically Heated Soldering Iron | 947 |
| An Electric Burglar Alarm Attached toa Door-Lock | 947 |
| A Dead End Switch of the Multiple-Point Type | 948 |
| A Salt Water Polarity Indicator Made from a Burned Out Fuse | 952 |
| An Electrically-Operated Recording Weather Vane | 952 |
| Operating Furnace Checks and Drafts by Electricity | 954 |
| HOUSEKEEPING MADE EASY | |
| An Improved Vegetable Slicer | 107 |
| Housekeeping Made Easy | 111 |
| Why Young Girls Don't Leave Home | 232 |
| Keeping Food Without Ice | 293 |
| Make Your Own Lazy-Betty | 299 |
| Improving a Towel-Roller | 301 |
| String Holder and Cutter | 306 |
| Handy Folding Kitchen Tables | 309 |
| Housekeeping Made Easy | 372 |
| Cleaning Gloves Economically with Benzine | 409 |
| Converting Sun-Parlor into Bedroom | 427 |
| A Towel Holder | 458 |
| A Convenient Shoe-Rack | 459 |
| An Easily Constructed Holder for the Broom | 468 |
| A Screen Door-check | 477 |
| How Do You Sit? | 551 |
| Bathing in Your Trunk | 557 |
| Housekeeping Made Easy | 558 |
| Using the Steam Radiator to Remove Wall-Paper | 564 |
| The Electric Scrub-Woman — Brainless but Efficient | 566 |
| Trundling Your Washing-Machine on Wheels | 566 |
| Why Isn't This Used Instead of Hooks and Eyes? | 575 |
| Repairing Worn Wheels of a Carpet-Sweeper | 601 |
| A Scheme for Keeping Pictures Hanging Straight | 608 |
| A Clothes-Rack foi Use Indoors and Outdoors | 603 |
| Protecting the Gas Range with a Wind-Shield | 618 |
| Turning tfie Stationary Tub into an Electric Washing Machine | 647 |
| Electric Ranges Are Becoming Popular | 681 |
| Housekeeping Made Easy | 690 |
| Water-Heating Garbage Burner | 698 |
| Doing the Family Washing in Your Rocking Chair | 738 |
| The "Permanent Wave" of a Woman's Hair and Its Secret | 743 |
| Reducing the Furnace Man to a Mere Push-Button | 731 |
| A Comfortable Electric Foot-Warmer Pad | 752 |
| A Foot-Warmer Attachment for a Radiator | 761 |
| How to Straighten the Crooked Straws of a Broom | 775 |
| A Heater for Use Over the Flame of a Gas Jet or Kerosene Lamp | 855 |
| Housekeeping Made Easy | 858 |
| Removing Old Starch from Clothes by a Malt Extract Bath | 913 |
| HOW THE WAR IS BEING FOUGHT | |
| War Pictures | 32 |
| When the Fighting Man Dreams | 53 |
| Locating Guns by Delicate Earthquake-Detectors | 178 |
| Submarine Destroyers | 180 |
| War Pictures | 208 |
| Experimenting with Liquid Fire | 208 |
| Firing with Heavy Artillery at an Enemy You Can't See | 226 |
| War Pictures | 336 |
| The Wastage of Flying Machines in the Great War | 377 |
| "Shooting" a Photograph with a Pistol-Camera | 408 |
| A Modern War Relic | 425 |
| Fitting Penholders to Crippled Hands | 435 |
| War Pictures | 487 |
| How London Cares for Soldiers' Babies | 502 |
| How the Firing of Heavy Guns Affects Animals | 576 |
| Detecting Enemy Submarines from a Ship's Look-Out | 579 |
| INVENTIONS TO MAKE LIFE EASY | |
| Adjustable Kettle-Cover | 113 |
| Hammer for Onc-Armed Man | 113 |
| Handling the Cord of Electric Irons | 113 |
| At Last! A Lock for Slipping Rubbers | 113 |
| A New Way of Directing the Breeze of a Fan | 113 |
| A Suit-Shaker Which Will Not Clog | 113 |
| An Adjustable Golf-Tee Board | 114 |
| Combined Penholder and Blotter | 114 |
| Saw Cuts Square Hole | 114 |
| Semaphore Signals for Automobiles | 114 |
| Skinning the Slippery Eel | 114 |
| Why Fall Down in Your Bath-Tub? | 114 |
| At Last! A Machine Which Irons Skirts Without a Murmur | 184 |
| Keeping Cool with a Fan Driven by a Hot-Air Engine | 246 |
| A Fancy Shoe-Lace Cover | 270 |
| A Heater for the Parlor Lamp | 270 |
| Pipe Loaded from Stem | 270 |
| Automatic Roller Bearing | 270 |
| A Spoon That Can't Slip | 270 |
| Spout Attachment for Bottles | 270 |
| Aluminum Billiard Cue | 271 |
| Automobiling with a Bicycle | 271 |
| Beating the Dentist to It | 271 |
| A Cure for Butter Fingers | 271 |
| Facilitating Speed in Writing | 271 |
| A Swatter for High-Fliers | 271 |
| Shoes of Esparto Straw which Outwear Leather | 375 |
| Escaping the Barber's Fingers | 432 |
| Collapsible Tooth-Brush Case | 432 |
| Keeping the Baby's Bottle Just Right | 432 |
| A Pipe with a Cleaning Wick | 432 |
| A Detachable Massage Brush | 432 |
| A Mechanical Oyster-Opener | 432 |
| Holding Asparagus in the Can | 433 |
| Adding Dignity to Condensed Milk Cans | 433 |
| Putting Ejchaust Gases to Work | 433 |
| Reducing Eye-Strain | 433 |
| Handle and Cover for Milk Bottles | 433 |
| MECHANICAL ENGINEERING | |
| Revolving Portable Elevator | 165 |
| Coaling a Liner with An Elevator | 206 |
| A Giant Grinder Which Goes to Its Work | 240 |
| How Heat Is Measured with the Eye | 330 |
| New Kind of Lawn Sprinkler | 332 |
| Loading Guns by Pneumatic Tube | 334 |
| The Paving Blocks of Paris | 352 |
| Sorting and Packing Apples by Machinery | 363 |
| A Low Water Alarm for Boilers | 370 |
| Locomotive Runs Three Hours on Charge from Boiler Plant | 370 |
| A Typewriter Made Especially for the One-Armed | 371 |
| A Locomotive that Burns Pulverized Coal | 376 |
| Keeping Watch on the Chimney | 378 |
| The "Spinning Whejpl" Gun | 397 |
| One of the Pranks of the San Francisco Earthquake | 416 |
| Why Not Make Rain Work? A Chance for a Rain Motor | 419 |
| Smoothing Sidewalks by Machine | 426 |
| The Preeminence of American Inventive Ingenuity | 427 |
| Belt Shifter Protects Workmen | 434 |
| A Curious Clock Built on a New Principle | 511 |
| Putting Wheels Under Workmen | 514 |
| Harnessing the Sun | 513 |
| A Machine-Shop in a Diving-Bell | 577 |
| Preventing Ships from Rolling with Fly Wheels | 591 |
| Cleaning Crown Bottle-Corks in a Portable Hopper | 592 |
| A High-Speed Bit That Bores Without Choking | 647 |
| Let a Puff of Air Do It | 664 |
| Air Is Stronger Than Arms | 665 |
| Dummies That Dance and Play | 666 |
| Dual Power. Portable Hoisting Machine of Compact Design | 674 |
| A Modern "Newspaper Maker" | 676 |
| A Simple Instrument Which Measures the Height of a Tree | 696 |
| To Protect the Fingers of the Woodworker | 705 |
| Combined Velocipede and Hobby-Horse | 715 |
| Felling Trees Automatically with a Mechanical Swordfish | 715 |
| A Water Curtain Used on a Heating Furnace | 726 |
| The Inventor of the Steam Engine Was Interested in Gim-Cracks | 739 |
| Saving Gold and Silver on the Vacuum-Cleaner Principles | 750 |
| This Ice-Cutting Machine Takes the Place of Eight Horse-Teams | 810 |
| Preventing Boiler Troubles by Mechanical Cleaning | 811 |
| An Adjustable Steering Device for the Tractor | 832 |
| A Mechanical Printer for Facsimile Letters | 836 |