INDEX TO VOLUME 88 



Page 



How to Send Coins by Mail 764 



Frying Eggs by Means of an Incandescent Bulb. . 770 



A Carbon Copy Postal Card 770 



A Sewer Banquet at $25 a Plate 809 



Hanging a Defective Boiler Plug as a Warning. . . 810 



An Egg with Hour Ridges 811 



Freezing Cocoanuts to Get at the Milk 811 



An Ingenious Combined Lawn Mower and Roller 81 I 



Listening to an Electric Current 813 



The House That Tin Cans Built 814 



A Switchman Who Became Judge, Though Armless 8 I 6 



Why We Can See Through Water 816 



Germany's Rubber Trade 817 



A New Type of Motor Horse Ambulance 817 



The Longest Wagon-Bridge in the World 818 



Watch Your Oil for Gold Teeth 818 



Protecting a Bridge from Villa with Acetylene 



Lamps 819 



A Strange Persian Cistern 820 



Swimming by Searchlight 820 



Traveling by Parcel Post 83 1 



Locating a Thunderstorm 832 



Moving Furniture with a Motorcycle 832 



Stores on Wheels 832 



Page 



These Desert Mates Never Quarrel 851 



This Gold Dredge Is a Glutton 85 1 



Two New Colossal Bridges 85 1 



Why Does a Rifle Crack 853 



Vegetation That Thrives Where Water Is Scarce. . 856 



Inventions for the Navy 861 



A Summer House from Straw Bottle-Casings 868 



A Water- Wagon in Actual Use 868 



Austria Exhibits Paper Substitutes for Cloth .... 869 



Chasing Butterflies for Money 872 



Some Record Dredging at Panama 876 



A Fender for London Omnibuses 877 



He Did It with His Little Magnet 877 



Making the Burglar Chase Himself 88 I 



Signaling Three Hundred Miles 896 



Orange Peel Oil Is Explosive 897 



A Model of Trinidad's Famous Asphalt Lake. . . . 902 



Freak Motorcycle Carries Four Passengers 905 



Limbering the Muscles of Fire-Fighters 910 



One Reason for Appreciating the Value of Birds. . 910 



Game Preserve for Ducks 911 



What Time Is It? Half-Past Aunt Sarah by "This 



Watch 911 



Why Does a Rifle Crack 853 



