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PAGE
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Volume 90 — January-June, 1917
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| AERONAUTICS
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PAGE
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| Ruth Law Makes Record Flight
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106
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| Dangling 'Twixt Earth and Sky from a Zeppelin
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185
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| The Night Mail
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369
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| The Motor Goose
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370
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| A Bird-like Airplane
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375
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| Ruth Law's Triplane
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378
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| The Cavalry Horse of the Air
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397
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| Making the Airplane Tire a Hundred Per Cent Efficient
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414
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| Searchlights Watching for Airplanes
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490
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| Shooting at Bird-Men with the New French Guns
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512
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| Why Zeppelins Are Frightful
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518
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| The Aerial Taxicab
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542
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| An Airplane Propeller Made of Lacquer
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671
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| How Aviators Land Safely at Night
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680
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| Torpedoing from an Airplane
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690
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| A Twelve-Cylinder Airplane Engine
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696
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| A Shock-Absorbing Airplane Wheel
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855
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| Adding the Motorcycle to Airplane Equipment
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864
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| AGRICULTURAL SCIENCE
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PAGE
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| Tempering the Wind to the Farm with Tree
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30
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| Farming in Your Cellar
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55
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| How the Forest Service Gathers Pine Seeds
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67
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| Making the Automobile Do the Chores
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119
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| A Knitting Needle Used for Testing Milk
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146
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| Growing Chrysanthemums
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169
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| Shipping Day-Old Chicks Is Profitable at Both Ends
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190
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| A Spinal-Column Harness for the Workman
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194
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| Growing Potatoes on the Roots of a Tomato Plant
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203
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| Taking Care of Honey Bees During the Winter
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206
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| Wall Street Goes a-Farming
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233
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| Comfortable Cork Brick Flooring for Cattle
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255
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| New Cream Separator Governor Is Based on Novel Principles
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423
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| Mothering Orphaned Animals with a Make-Believe Nipple
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437
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| Modern Conveniences on the Farm
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444
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| The Amount and Distribution of Water on a Farm
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451
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| Modern Squabhouse Construction
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453
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| A Bulletin Board for Making Sales of Farm Produce
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463
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| A Method of Keeping a Rabbit's Cage Clean
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464
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| Stimulating a Plant's "Digestion" by Electricity
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510
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| Making Hogs Grind Their Own Grain Food
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511
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| Quartering Potatoes for Seed with a New Double-Blade Cutter
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596
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| Converting an Automobile into a Farm Workhorse
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598
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| An Easily Constructed Pan for Sterilizing Dairy Utensils
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617
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| A Combined Waterpot and Hoe
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728
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| Portable Saw and Pump Outfits
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746
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| Grow Potatoes in Window-Boxes
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746
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| Coaxing Birds to Your Garden
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756
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| Making a Small Colony Poultry House
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776
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| Planting Strawberries by Machine
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870
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| Plowing the Farm by Automobile
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881
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| Enveloping Trees in Freezers to Study Temperature Effects
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882
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| Entertaining the Crow
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892
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| Picking Fruit from Tall Trees While Standing on the Ground
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897
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| An Improvised Tree Sprayer and Fire Engine Combined
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909
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| Rain When the Farmer Wants It
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913
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| Killing the Insect Pests of Trees with Poisonous Gas
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915
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| ARCHITECTURE
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PAGE
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| Curing an Auditorium of Echoes
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241
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| A German Village on American Soil
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424
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| A Million-Dollar Schoolhouse
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496
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| A Thousand-Dollar Playhouse
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498
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| Liberty's Torch
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552
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| A Hollow Waterproof Tile Building Block
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679
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| A World's Fair Skyscraper
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716
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| A "Crazy Patch" House
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807
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| Reducing Fire Hazards
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868
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| Protecting Canal Zone Buildings with an Oil Moat for Insects
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882
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| A Tree That Served as a Home and Is Now a Bandstand
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902
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| A Five-room Bungalow
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931
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| ASTRONOMY
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PAGE
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| The Most Wonderful World in the Universe
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264
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| Is Space Itself Luminous?
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271
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| Prospecting the Skies
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903
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| CHEMISTRY
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PAGE
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| Chemistry — An Important Factor in Criminology
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42
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| Making Imitation Leather from Paper Preparations
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113
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| A Mixture for Cleaning Paint
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121
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| Chemically Hardening and Dust-Proofing Floors
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302
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| A Vest-Pocket Sterilizer
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400
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| Potash from Seaweed — An Industry in the Making
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575
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| How Paints Are Made
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593
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| Goggles to Be Used When Making Chemical Experiments
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610
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| Oxidizing Iron with Fumes from, Acids
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612
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| Try Artificial Milk
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680
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| Dried Vegetables
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698
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| Another Outcome of the War — The American Evaporated Vegetable
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727
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| Writing Paper Made from Spinach Stems
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742
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| Making Artificial Cream that Rivals the Original
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749
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| The Wonders of Coal Tar
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874
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| A Convenient Method of Handling Dangerous Acids
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929
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| Making a Paint That Will Stand Washing
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930
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| CIVIL ENGINEERING
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PAGE
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| Laying Pipes in a New Zealand River
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40
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| Endangering Your Life for an Imaginary Line
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99
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| A Wooden Boulevard Over the Desert
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116
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| Suppose New York's Harbor Were Drained
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164
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| France Completes the World's Largest Tunnel
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197
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| Protecting San Francisco's Beach
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259
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| Widening a River with a Steam Shovel
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343
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| How the Office Adding Machine Is Employed in Surveying
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348
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| The Spaulding Dam
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507
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| Traffic Highways Under the Hudson River
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508
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| A Grass Bridge. A Remarkable Feat in Civil Engineering
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564
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| How Baltimore Protects Newly Paved Streets and Saves Time and Trouble
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596
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| It's Sheer Weight That Keeps a Pier in Place
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600
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| Surveying Wagon
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645
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| As a Lineman He Has Climbed Eight Hundred Miles
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665
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| Hammering Road-Beds to Make Them Even
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733
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| Making Floods Work
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738
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| Measurements of the Valleys of the Deep
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748
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| One of the Longest Tunnels in the World Is Planned for New York
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750
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| ELECTRICITY
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PAGE
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| Seeing the Sounds That You Sing
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29
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| An Electric Light Attachment for Eye-Shades
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30
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| Finding the Keyhole at Night
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60
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