T Table, a rustic, 66 Tailless kites, 229 Telegraph Code, International, 155 Tent, the "A", 207 Tent, annex, 50 Tent, canvas wall, 46 Tent fly, 54 Tent making, 44 Testing the track, 291 Thole pins, 61 Tie block, wood, 49 Tie, wire, 50 Tiger's Tail, 83 Tiller, ice boat, 161 Tiller of land yacht, 219 Toboggan, the, 167 Toboggan, the summer, 229 Tower, the windmill, 275 Towers of the cantilever bridge, 299 Towers for water wheel, 243 Towers of water wheel, setting up, 248 Track, laying the, 289 Track, the railway, 287 Track, testing the, 291 Tramping outfits, 203 Tramp-proof boat mooring, 142 Tramps, trouble with, 138 Tree, diving, 84 Tree house, the, 132 Trigger for crossbow, 57 Trip to the island, 64 Tripod, the, 75 Trouble with tramps, 138 Trunk, the old, 18 Truss, king rod, 102 Turnbuckle, a simple, 216

U Umbrella with fly, 211 Umbrella rib crossbow, 55 Uncle Ed, word from, 45 Uncle Ed's departure, 109

The Scientific American Boy — Part 113

V Vacation, Christmas, 19 Vacation, Easter, 224 Valves, the pump, 280 Van Syckel, interview with, 189 Vengeance, 139 Visit from Mr. Schreiner, 110

The Scientific American Boy — Part 113

W Wall, how to build, 266 Wall tent, 46 Water wheel, 241 Water wheel buckets, 246 Water wheel, construction of, 245 Water wheel, Mr. Halliday's, 252 Water wheel, mounting the, 249 Water wheel paddles, 246 Water wheel receiving trough, 247 Water wheel, surveying for, 241 Water wheel, towers for, 243 Water wheel towers, setting up, 248 War, council of, 139 Weaving needle, 39 Well, digging the, 274 Wheel, the wind, 276 Wheels for gravity railroad, 285 Wheels, mounting, on car, 286 Wheels, mounting frame on, 219 Wigwag abbreviations, 146 Wigwag alphabet, 145 Wigwag numerals, 145 Wigwag signals, 144 Wigwagging and heliographing, 144 Wigwagging at night, 147 Willow Clump Island, 23 Willow Clump Island, farewell to, 307 Willow Clump Island in winter, 194 Wind wheel, 276 Wind wheel blades, 278 Wind wheel brake, 278 Windmill, 273 Windmill tower, 275 Window hinge, 270 Window sash, log cabin, 270 Wings, bat's, 33 Wire tie, 50 Wood, bending, 39 Wood tie block, 49 Word from Uncle Ed, 45

The Scientific American Boy — Part 113

Y Yacht, land, 215 Yacht, land, frame of, 216

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