Page 



Keeping Shampoo Soap Out of Your Ears 273 



A Shaving Mug with a Soap Pump 273 



Snapping the Snapping Turtle 273 



A Headlight Dimmer Operated from the Seat. . . . 274 



A Stepladder and Ironing Board 274 



Increasing Your Grip on the Golf Club 274 



It's a Wise Man That Knows His Own Tooth 



Brush. 274 



A Sop to Feminine Vanity 274 



Making Potato Chips by Machine 274 



MISCELLANY 



Sea Shells for Decorating Concrete 9 



The "Back Yard Limited" 9 



Lengthens Life of Rubber Gloves 11 



Shipping Pigs in Baskets 17 



A Pueblo Village for the Garden of the Gods. ... 19 



A Millinery Store on Water 24 



How Savages Prepare Poisoned Arrows 25 



Two-Year-Old Eggs 25 



Your Feet are Wiped When You Enter Bohemian 



Bakeries 26 



No Chance to Pass This Shop 32 



An Illinois Community with Ideas in Street 



Lighting 32 



Polite Sign Boards Bring Results 32 



Artificial Sausage Skins 32 



An Indian Weeding Party 51 



Curious Trades of Other Lands 52 



Fly Impaled by Spear of Grass 55 



From Cellar to Sidewalk 66 



A Clock Made of Straw 66 



Street Corner Directories that Tell You Everything 70 

 Where Men Are Still Cheaper Than Machinery . . 76 



A Golf- Tee Fertilizer 88 



A Real Sultan's Strange Body-Guard 88 



Building with Cobblestones 102 



Bottle Corks Made from Blood 107 



Left-Handed Watches for Left-Handed People. . . 112 



The Longest Letter in the World 167 



A Boy's Street Boat 1 70 



Fish That Travel on Land 177 



Fossil Plants Twenty Million Years Old 1 78 



The Latest Style in Handcuffs 211 



Have You Eaten Your Cow> 211 



A Tree Captures a Fence 224 



What Is the Best Shade Tree in the United States? 225 



A Merry-Go-Round in the Water 230 



Forest Rangers Must Fight Snakes as Well as Fires 230 



Making Butter by the Barrel 230 



How to Make Knots, Ties. Hitches and Bends. . . 235 

 Brushing Your Teeth; There Is a Right and a 



Wrong Way 236 



A Revolution Timer and Stop Watch Combined. . 246 



Our Big Bird Seed Pill 252 



Making a Dancing Floor Into a Skating Rink. . . . 252 



A Business Office in the Open Air 253 



An Ant Heap as a Look-out Station 256 



Living in a Tree Stump 256 



How to Sit Straight and Be Comfortable 258 



Three-Wheeled 'Rickshawa for Asia 260 



Giant Metal Shoe 261 



A Saw That Stands Up 262 



A Rolling Clock 263 



A Bird-House That Can Be Cleaned 264 



If You Only Have a Rope 269 



That Mathematical Short Cut 270 



Hotel Keys Which Take the Place of Call Boys. .271 



The Strength of a Stream of Water 271 



Parcel-Carrying Rack for Bicycle 294 



The World's Largest Flagstaff 325 



Converting an Old Boiler into a Water Standpipe 335 



A Test for Baggage Smashers 338 



Circular Barn Built of Concrete 339 



Piling Lumber in Forty-Foot Monumental Stacks 339 



A Shell That Melted Money in a Ship's Safe 340 



The Largest Card Holder in the World 341 



This Belt Breaks All Records 341 



A Gas Well Which Wasted $200.000 344 



Why Can a Fly Walk Upside Down? 345 



Your Razor is Like a Scythe 349 



A Civilized Man's Totem Tree 372 



Huge Twin Lanterns Light Entrance to School. . . 372 



When Will This Reservoir Be Emptied? 373 



A House with a Sail 384 



A Motion-Saving Rule-Case for Printers 392 



Carving the Confederate Army in a Granite Moun- 

 tain 402 



A Sensible Feeding Bag for Horses 404 



Page 



This Factory Burns "Sauerkraut" for Fuel 411 



A Brazilian Snake Farm 417 



Why Do We Have Two Eyes? 418 



Why Is the Sky Blue? 419 



A Dust-Collecting Window-Ventilator 420 



A Medley of Puzzles 430 



How to Ascertain Your Latitude and Longitude. . . 432 



Improving the Old-Fashioned Ice-Skate 434 



Preserving Indian Speech 486 



A Man-Power Reel for Hauling in a Long Seine . . 488 



A "Center-of-the-Room" Fireplace 489 



RoUer-Skates in Business 494 



To the "Titanic" Heroes 496 



The Lively Bird on Our Cover 496 



Every Man His Own Hair Cutter 497 



Ladder Tipped with Mule's Feet 503 



A Quick-Acting Wrench 503 



Operating a Stage Under Difficulties 505 



An Improved Hack-Saw Attachment 506 



A Grain Elevator Which Holds 3,500 Carloads. ..511 



A Blanket with Many Uses 528 



Walking Backwards Across the Country 535 



A Judge Who Has Succeeded Without Arms. . . . 540 



Pranks Played by Trees 542 



Mahogany Steamboat Cabin for a Home 543 



A Giant Pair of Scissors with a Symbolic Meaning 543 



Mammoth Tusks From Alaska 543 



How Blotting Paper Absorbs Ink 544 



Balsa, Lightest of Woods 544 



Did You Know That Flour Explodes? 554 



Sea-Scouts as Lamplighters 554 



A Braided Tree 558 



Better Than the Bread Mother Baked 559 



Soda Pulp Has Many Uses 560 



Laundering Smoke and Using It Over Again. . . . 562 

 How a Boy Delivers Packages with His Own 



Bicycle-Trailer 564 



A Pocket Safe 564 



The Refreshment Tree 564 



A Sycamore Stump for a Lamp Post 568 



Raising Goldfish by the Acre , . 569 



Watering the Oyster 581 



Music While You Work 582 



Army and Navy Clubs Please Notice 582 



A Motion-Study Stopwatch Which Does Its 



Own Computing 583 



A Suitcase on Wheels 583 



A Silo and Windmill Tower in One 584 



Mark Your Golf-Ball with Your Initials 588 



A Medley of Puzzles 589 



Hot- Water Bottle Fits the Back 539 



How I Made $22.50 by Reading the Popular Science 



Monthly 641 



An Invisible Ink 644 



What One Corporation Is Doing to Make Men of 



Boy Einployees 648 



Catching Turtles as a Business 65 I 



Why Logwood Is Worth $200 a Ton 651 



Llamas as Powder-Carriers 656 



Singing for the Phonograph 659 



Gasoline in Bulk for Panama 660 



This Cab Simply Can't Tip Over 660 



Buying Telephone Poles by Weight 662 



Gas Flows Back to the Earth 662 



A Nailless Chair Made by Good Soil, Fresh Air and 



Sunshine 664 



A Nautical Porch Seat 667 



One Tree Grows Through Another 688 



Army Pistol Shoots Colors 694 



A One-Pound Diamond 694 



Serving Food on the Run 695 



This Barn Bears a Lesson to Pacifists 697 



"Quiere Leche Hoy? " 697 



A Model of Joel Chandler Harris' Old Homestead . . 698 



Washing Logs for Safety 699 



The Shingle-Phonograph 714 



Teaching Blind Men to Fence 715 



Out-Periscoping the Periscope 716 



Putting Speed in Telephone Directories 718 



Purifying Iron in a Vacuum 720 



A Room Papered with Postage Stamps 728 



Soldering-iron Has New Principle 728 



Earrings That Denote Widowhood 730 



Canceling Checks with a Hammer and Anvil .... 739 



Why Can't We Make Diamonds 742 



A Fiendish Plant Which Thrives on Cattle 744 



A Tree Which Serves as a Bridge 747 



A Medley of Puzzles 748 



Mechanical Tops Which Puzzle 754 



Counting Up on Steel Fingers 756 



