Battery Switch 99
Battery, Thermo-Electric, How to Make 59, 140
Battery Voltmeter 153
Battery Zincs, Old, To Use 87
Bed Warmer.  Electric, How to Make 338
Beeswax, Substitute for 129
Bell, Cracked, Restoring Tone to 71
Bell, Return Call, with One Wire 101
Bell Ring Register 316
Bell, Ringing by Touching a Gas Jet 403
Belt, Eyelets for 432
Belt Lace Caution 239
Belt, Round, To Make without Ends 243
Bench Lathe Made of Pipe Fittings 316
Bicycle Catamaran 145
Bicycle Coasting Sled, How to Make 231
Bicycle Frame, Enameling 385
Bicycle, Runners on 157
Bicycle, To Attach a Sail to 425
Bicycle, Trailer for 397
Bicycle Trouser Guards for Sleeve Bands 283
Bicycle.  Water, How to Make 335
Bill File Made of Corkscrews 315
Bind Magazines, To 40, 56, 406
Bird House, Proper Design for 201
Bird Houses, Clay Flower Pots Used for 277
Bit, Gouge Used as 411
Blotter Pad, Corner Pieces for 8
Blotting Pad, Desk 17
Blowpipe, Homemade 428
Blueprint Lantern Slides, How to Make 120
Blues, prussian and Chinese 401
Boards, Joining 268
Boat-Bicycle Catamaran 145
Boat-Canoe, How to Make 451
Boat-Catamaran, Cruising 423
Boat, Ice, How to Build 357, 382
Boat, Paddle, How to Make 100
Boat, Paper, How to Make 321
Boat-Punt, Homemade 123
Bobsled, Homemade Yankee 408
Bolts, Rusted 151
Book Cover, Paper, How to Make 126
Book Holder 32
Book, Removing Grease Stains from 230
Book Rest 292
Bookcase Doors, To Keep Closed 377
Bookmark 379
Bookmark, Brass 18
Bookmark, Paper Clip 241
Books.  How to Carry 409
Boomerangs, How to Make 4, 202
Bore a Square Hole, How to 179
Boring Holes In Cork 8
Bottle, Cutting Thread inside of 179
Bottle, Diving 331
Bottle, Inverted, Withdrawing Paper from Under 33
Bottle, Photographing Man in 74
Bottle Pushing on the Ice 409
Bottles, Round End.  Base for 29
Bottle Stopper, New Way to Remove 224
Bowl, Copper, How to Make 185
Box Cover.  Sliding, Fastener 256
Box, Fishhook 379
Box, Magic 7
Box, Water Color 257
Boxes, Rustic Window 30
Bracket Saw, Cheap, How to Make 42
Brass Bookmark 18
Brass, Cleaning 407
Brass Flag, Ornamental, How to Make 266
Brass Frame In Repousse 237
Brass Furnace, How to Build 115
Brass, Piercing Punch for 19
Brass Plaques, Photo Silhouette, Making 217
Brass Surface, Flat, Polishing 229
Brass Work-Candlestick, How to Make 325
Bread, Loaf, Cutting 36
Bronze Liquid 329
Brooder for Small Chickens 343
Broom Holder 13
Broom Holder Made of a Hinge 33
Broom, Old, Crutch Made of 352
Brush, Counter, for a Shop 419
Brush, To Keep from Spreading 367
Brushes, Paint, Care of 267
Bulb on a Glass Tube, To Make 324
Bunsen Cell, How to Make 206
Burglar Alarm, Simple, How to Make 368
Burning Inscriptions on Trees 45
Burns, Carbolic Acid 126
Button, Changing into a Coin 234
Button.  Removing from Child’s Nostril 237
Buttonhole Trick 234