INDEX TO VOLUME 92 



Page 



Control Water in a Bath Tub 612 



A Cement for Firmly Holding Glass on Metal .... 612 

 Fastening Cases to Railing in Historical Museum 612 



Simple Designs for Sheet Metal Working 613 



Cutting Asphalt After Removing Metal Covering 615 

 Intensifying Under-Exposed Blueprints with 



Hydrogen Peroxide 615 



Making a Simple Press of Boards for Trousers. . . 616 



Demonstration of Spontaneous Combustion 616 



Temporary Repair on a Broken Spindle 616 



An Adjustable Radius Turning Tool for Lathes. . 617 

 Protecting the Soles of Shoes with Ordinary 



Varnish 617 



A Metal Clip Formed with One Operation 617 



A Wood Mold for Casting Miniature Car Wheels 618 

 Compasses Made Into a Combination Drawing Tool 61 8 



Open Canoe Cruising 619 



An Attractive Heat-Driven Window Display of 



Gas Fixtures 623 



Permanently Fastening Joints Held with Screw- 

 Unions 623 



Little Ways in Which You Can Save Gasoline. . . . 624 

 Discovering a Card Chosen but Not Taken (rem 



the Pack 624 



Rejuvenating a Ribbon on an Adding Machine. . . 624 



A Foot-Power Punch Press for Light Work 625 



Homemade Laminated Pulleys for the Small Shop 625 

 A Lawn Mower Converted Into a Handy Truck. . 626 

 A Dam to Prevent Top Soil from Washing Away . 626 

 To Prevent Leather Belts from Slipping on Pulleys 627 



Mounting a Porcelain Electric Light Base 627 



Mounting a Glass Plate Without Drilling It 628 



Securing'Wood or Metal Molding to Plaster Walls 631 

 A Simple Method of Silvering Brass and Copper . . 640 



Birds Take Their Own Picture 761 



Holding a Board with the Weigh of a Newspaper. 763 

 A Homemade Wrench for Turning Small Inac- 

 cessible Nuts 763 



Homemade Hectograph 763 



A Folding Bicycle Stand for the Home Shop 764 



A Homemade Lifter for Gasoline Engine Valves . 764 

 Do You Grow RosesV Here Is a Little Information 765 

 A Reflex Attachment for Use on a Hand Camera . . 766 



Fastening a Breather Cap Securely 766 



Spreading the Air Currents from a Desk Fan 766 



Open Canoe Cruising 767 



Freezing a Glass Tumbler to a Block of Wood 770 



Building a Model Airplane Kite 771 



A Rake with Detachable Tooth-Holder 772 



Cabbage Root Maggots and How to Control Them 773 



Cutting a Heater Pipe with a Can Opener 773 



The Color of Gasoline Does Not Denote Its Quality 774 



Conve.'ting a Porch Swing Into a Baby's Bed 774 



Making a Lawn Leveling Temper of Wood 774 



Removing Yellow Stains from Piano Keys 774 



Simple Designs for Sheet Metal Working 775 



Do Not Use Fuel Savers. Reg ilate Your Damr>p-'s 778 

 Bracing for Belt Guard to Cover Counter-shaft 778 

 Carrots Used as a Substitute for Eggs in Puddings . 778 

 Here is a Combination Fence and Lawn Sprinkler 779 



Changing Ink Into Water 779 



Arrangement of Desk for Accessibility 780 



Fill Up the Cuts in Your Tires 780 



A Bucket Type Wind Motor 781 



Adding and Subtracting Machine of Cardboard . . . 782 



A .Simple Sawdust Reflector 783 



A Balancing Ladder for Home Gymnasiim 784 



Mounting Photographs .So That They Will Not Curl 784 



Homemade Power Tapping Machine Work 785 



A Homc.nade Bench Vise for Small Work 785 



An Easily Operated Clamp for Concrete Forms . . 786 

 A Receptacle for Holding Graphite in aClean Way 786 



.Simple Homemade Sun Drier for Fruits 786 



A Clip for Removing Insulation from Wires 787 



A Depth Indicator for a House Water Tank 787 



A Combined Microphone and One-Way Telephone 788 



Restoring Bichromate of F^otash 788 



Switchboard Constructed for Use in the Laboratory 790 

 Methods of Construction for Telephone Wires 791 



How to Make Weather-Proof Goose-Neck 799 



Temporary Repair for a Slipping Magneto Shaft . . 799 

 Cleaning .Spark-Plugs with Phonograph Needles. . 800 

 How to Make an Air Operated Metal Punch for the 



Shop . 921 



Keeping Foods and Eggs Fresh on C'amping Trips 921 

 Auto Bearings and How to Care for Them Properly 922 

 .Strengthening Hammer Handles with .Steel Strips. 923 



Page 



Wall Hanger for the Ordinary Electric Lamp Stand 923 



Inexpensive Aluminum Polish 923 



Constructing a Convenient Table for the Porch. . . 924 



A Garden Barbecue 925 



Cow Horns Effectively Used in Library Chair and 



Table 926 



Open Canoe Cruising 927 



Wing Attachments on Shoes to Aid the Swimmer . 930 



Fishline Float Made of an Ordinary Thread Spool 930 



Convenient Material for a Bait-Catching Net. . . . 930 

 Banding a Tree Trunk to Catch and Destroy 



Moths 931 



Cleaning the Gilded Portion on Picture Frames. . . 931 



Cooling Camp Food by the Evaporation Method. 931 



Rocking-Board See-saw for Children's Playground 932 



Old "Tin Fruit Cans May Be Used Over Again 932 



An Overhead Dove-Tail Suspension for Table 



Drawers 932 



How to Make a Pocket Plumb and Level in a Block 93 3 



Making Camp Hammocks from Gunny Sacks 933 



Cement for Mending Valuable China Dishes 933 



Stakes with Guide Lines for Hoeing Garden Beds . . 934 



Combination Camp Kitchen Cabinet and Table . 934 



Simple Designs for Sheet Metal Working 935 



Making a Lattice Trellis for Roses and Vines 938 



How to Make an Efficient Fireless Cooker 939 



A Driver for Holding a Screw While Turning It. . . 940 



Extension Holder for Hauling Long Stock 940 



A Rope Suspension Bridge for a Garden 941 



Starting a Very Small Screw with Adhesive Tape . . 942 



Scaffold for Holding in Place with a Pole 942 



Holding Photographic Plates from Tray Bottom. . 942 



A Convenient Summer Cottage 943 



How to Make an Automobile Spring Leaf- 

 Separator 944 



Self-Measuring Wheelbarrow for Aggregates 945 



Applying Grease to Working Gloves to Make 



Them Wear 945 



Making a Photographic Timer Out of Watch ..... 945 



Joining the Ends of Carpet Rags Without Sewing 945 



An Inexpensive and Effective Water Cooler. 946 



Renewing a Worn Artist's Brush by Repointing It 946 



A Spring Lock for the Cover of a Garbage Can .... 946 



Thimble Used as a Ferrule on a TobI Handle 952 



RADIO COMMUNICATION 

 A Waterproof Mounting for a Circular Piece of 



Glass 146 



Code for Use with a Bugle to Transmit Messages. . 146 

 Resonant Annunciator to Operate on Alternating 



Current '47 



An Easily Constructed Variable Condenser 149 



A Simple Method for Determining Condenser 



Capacity I 52 



Telegraphing by Wireless Through the Ground. . . 153 



High Frequency Apparatus 155 



Wireless Work in Wartime 157 



A New Condenser to Protect Wireless Generators 313 

 Increasing the Range of the Ground Wireless Sta- 

 tion ■" 4 



Wireless Work in Wartime 317 



Wireless Plotting Muffled by Band Music 468 



Wireless Work in Wartime 477 



Now We Reach the Philippines Directly by 



Wireless 631 



Wireless Work in Wartime 632 



A Simple Compact Short Distance Wireless 



Telephone 639 



Delicate Sound Amplifier for Telephone Receivers. 789 



Alternating Current Charging Without Rectifier. . 790 



Wireless Work in Wartime 797 



Lighthouse Sends Radio Fog Warning Out to Sea. 800 



The Story of a Wireless Hero 828 



Home-Training for Wireless Heroes 910 



Wireless Work in Wartime 957 



Mind Reading by Wireless 939 



RAILWAYS 



The Axle Periscope 54 



A Gasoline Locomotive for the Trenches 70 



Preventing Cars from Telescoping by Means of 



Collision Buffers 94 



The Engineer's Watch-Holder 106 



Periscope for the Engineer in His Cab . 108 



Melting Snow in the Track of a Locomotive 213 



Wasting Goods Shipped by Freight 2 50 



