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INDEX TO VOLUME 88
| Page | |
| An Emergency Tire Made Simply of Rope | 587 |
| Vulcanizing Tires with Exhaust Heat | 593 |
| A Trouble-Proof Tire | 593 |
| An Oil Cup for Auto Springs | 593 |
| An Anti-Clogging Oil-Gage | 593 |
| A New Way of Driving a Bicycle with a Motor . . | 702 |
| Converting an Automobile into an Apartment. . . . | 719 |
| The Chair Car—the Latest Development in Stage-coaches | 729 |
| A Tomahawk Grease Gun | 731 |
| Device Prevents Automobiles from Being Stolen. . | 731 |
| How a Second-Hand Automobile Made a Railroad Pay | 732 |
| New Automobile Alarm Calls for Help | 753 |
| This Grease Cup Keeps Your Hands Clean | 755 |
| Converting a Motor-Cycle Into a Tricycle | 757 |
| To Keep Your Foot Always on the Accelerator Pedal . . . | 757 |
| A Lamp for the Motorist's Glove | 758 |
| Improving Automobile Springs | 768 |
| Hints to the Motor-Cyclist | 770 |
| Fools Automobile Thieves | 780 |
| An Automobile-Bed for the Tourist | 870 |
| A New Ford Folding Bed | 870 |
| Some Ingenious New Accessories for the Touring Car | 870 |
| A Glass Hood for Autonnobiles | 871 |
| A Handy Automobile Grease-Gun | 871 |
| Rain Protector for Automobile Wind-Shield | 871 |
| An Electric Automobile Built Like a Drop of Oil | 896 |
| What Shall We Do for Gasoline? | 904 |
| Curing a Noisy Automobile Hood | 917 |
| BOATING | |
| The Trolley-Car Boat for Bathers | 725 |
| A Wheel-barrow for Canoes | 744 |
| The Ozark Float-Boat | 747 |
| How to Build and Sail a Small Boat | 765 |
| Navigating a River Boat by Sound | 905 |
| How to Build and Sail a Small Boat | 929 |
| CIVIL ENGINEERING | |
| Twelve Million Dollars for Twenty Minutes Train Time | 7 |
| An Excavation for a Road Leaves House on Brink | 17 |
| Two Bridges with but One Approach | 20 |
| A Vast Tank with a Park on Top | 20 |
| A Really Greater New York | 60 |
| The Longest Pipe Line in America | 93 |
| A Gigantic Steel Bridge-Beam | 166 |
| Niagara on Tap | 180 |
| Lifting a House Over Trees: Sentiment vs. Cost. . | 247 |
| The Giant Task of the Subway Diggers | 326 |
| Three Slender Wires Form a Bridge | 342 |
| A Circular Bridge on Stilts | 377 |
| The Bridge that Telephones Built | 403 |
| An Elevated Road that Tried to Outstrip a Town. | 421 |
| Digging Away the Slides at Panama | 492 |
| Amputating Pittsburgh's "Hump" | 532 |
| Workmen Shot from Tunnel Through the Bed of a River | 643 |
| Rocking a Three-Hundred Foot Tower with Your Hand | 645 |
| Spraying Concrete | 665 |
| New York's Submarine Subway and How It Was Built | 705 |
| Making Money Out of Waste Land with a Stream of Water | 720 |
| Panama's Locks Guarded by Chains | 745 |
| Using Ice to Lower Heavy Stones | 774 |
| A Hint for Draftsmen | 793 |
| ELECTRICITY | |
| Band Conceits from an Electric Light Bulb | 71 |
| Brightening the Baby's Path | 92 |
| Saving Steps at Target Practice | 95 |
| An Electric Flat Iron Float | 95 |
| Electric Heater Resembles Desk Telephones | 104 |
| Winter Uses for the Electric Fan | 109 |
| Electric Toaster Eliminates Burnt Fingers | 110 |
| Electric Candles on a Nine-Story Birthday Cake. . | 169 |
| A Sleeping Nest with an Electric Elevator | 185 |
| Signal Lights for Traveling Cranes | 228 |
| Power from a Floating Water Power Plant | 234 |
| Testing Shrapnel Shells in Electric Ovens | 254 |
| Something Is Wrong with This Unemotional Phonograph Fire Alarm | 337 |
| How to Photograph Electrical Sparks | 348 |
| Trimming Veneered Edges by Electricity | 348 |
| An Owl Darkens the Town | 369 |
| Typewriting Eight Telegrams Over a Single Wire. | 374 |
| Can Battery Explosions on Battery Submarines Be Prevented? | 394 |
| A Top That Never Stops Spinning | 401 |
| What Makes an Electric Lamp-Bulb Glow? | 401 |
| The Electric Dog and How He Obeys His Flash-lamp Master | 426 |
| Finding the Positive Wire | 454 |
| How to Prolong the Life of Battery Cells | 454 |
| Springless Electric Bell | 454 |
| A Simple but Powerful Arc-Light | 455 |
| Making a Master Vibrator for Automobiles | 461 |
| Electric Door-Opener for a Garage | 470 |
| A Metal-Vapor Light That Is White | 529 |
| Telegraphing with the Telephone | 563 |
| Detecting Flaws in Steel by X-Ray | 577 |
| Storage Battery Hints | 652 |
| An Electric Soldering Iron | 626 |
| Construction of Unipolar Dynamos | 624 |
| The Electromagnetic Hand for Armless Veterans. | 657 |
| An Electrically-Lighted Clock | 699 |
| A Socket Protecting Knot | 731 |
| An Electric Fan Suspended by Its Own Wire | 736 |
| Lamp Resistance for Charging Storage Batteries | 781 |
| Recharging Worn-out Dry Batteries | 781 |
| Automatic Dead-End Switch | 785 |
| Making Coils of Resistance Wire for a Small Electric Stove | 788 |
| How to Make an Electric Horn | 788 |
| Repairing a Burnt-Out Fuse | 788 |
| Changing a Telegraph Sounder Into a Relay | 789 |
| Substituting a Flashlight for a Door Bell | 789 |
| Telephone Line Test Clips Easily Made | 789 |
| A Current Reverser for Small Motors | 789 |
| Making Over the Lighting System | 795 |
| Healing Magic of the Electric Arc | 818 |
| Illuminating a Highway with Pockets of Light. . | 905 |
| Bird Protection for Electric Lines | 907 |
| Making a Simple but Efficient Flasher | 939 |
| For Those Midnight Serenaders | 939 |
| A Musical Electric Door-Bell | 940 |
| Connecting Dissimilar Telephone Lines | 941 |
| Connecting Wires with Tinfoil | 941 |
| An Efficient Spark-Plug Tester | 941 |
| The "Ideal" Battery . | 945 |
| The Construction of an Automatic Battery Circuit-Breaker | 947 |
| How to Make a Rural Mail Box Alarm | 947 |
| Electrical Lighting Device for the Gas-Range. . . . | 948 |
| An Electric Weather-Vane Indicator | 948 |
| GEOLOGY | |
| The Devil's Post Pile | 178 |
| Natural Cannonballs | 178 |
| Natural Stadium Which Holds One Hundred and Thirty Thousand | 248 |
| What Wind and Rain Can Do | 530 |
| Fake Gypsum Claims | 573 |
| Rock Folded Like Cardboard | 814 |
| Strange Mineral Spring Deposit in a Nevada Desert | 897 |
| A Strange Spongelike Rock | 903 |
| Are Metals Alive? | 912 |
| GAMES, PUZZLES. AND OUTDOOR SPORTS | |
| Ice Dynamited So Yale Crew May Row | 658 |
| Playing Golf on the Roof | 669 |
| Ten-Net—An Indoor-Outdoor Game | 705 |
| Outdoors Yet Indoors | 726 |
| HOME CRAFTSMAN | |
| An Extra Drainboard for the Kitchen Sink | 113 |
| To Lengthen the Life of a Necktie | 113 |
| Wood Box Arrangement Saves Many Steps from the Dining-Room | 113 |
| Broom Closet Utilizing Waste Space | 114 |
| A Cheap Septic Tank | 114 |
| A Craftsman Desk Chair | 115 |
| A Serviceable Hot Water Heater Which Can Be Made at Home | 118 |
| How a Course Dinner Can Be Served Without a Maid | 118 |
| Connecting Block for Bell Wires | 119 |
