Sparks, electric, 110, 144 Specific gravity, 217, 237, 239 heat, 156, 158 Speed by use of wheels, 165, 212 Spiral, 163 Spoons, 157, 158, 227, 228 Spring, 59, 184, 185, 226 pulley, 183 Steam, 71, 79, 111, 133, 175, 219 pressure, 69, 70, 72, 73, 174, 175 Steam cooker, 56 valves and gages, 70, 72, 73, 173 Steel for cooking, 155 Stencil, 206 Stitch, 187, 188, 189, 191 Stones, fireless cooker, 50, 54 Stoner, 161 Storage tank, 113, 220 Storage battery, 215, 216, 217 Stove, 37, 47, 48, 49, 57, 58, 63, 65, 70 electric, 42, 44, 157 gas, 23 to 30, 144 heating, 75, 76, 78, 80, 141 Stove, wood and coal, 15, 22 Stoves, care of, 31, 34, 41, 44, 76, 78 Stuffer, 163, 164 Suction pump, 112, 113 washer, 132, 133, 169 Sweeper, carpet, 147, 148, 150 Switch, ignition, 192 Syrup, temperatures of, 235 T Tables, 85, 158, 219, 226, 227, 228, 229, 235, 238 Tablespoons, 227, 228 Tank, 30, 31, 35, 37, 39, 40, 64, 67, 96, 146, 220, 223 septic, 124, 125, 126, 127 water, 107, 109, 113, 117, 119, 128, 129, 130 Teaspoon, 227, 228 Temperature, 20, 51, 73, 101, 103, 105, 173, 196, 198, 200, 206, 220, 233, 236 Tempering of metal, 156 Tension, 187, 188, 189 Tester, egg, 201 Thawing, 233 Thermal unit, 218 Thermometer, 197, 199, 233, 234 Thermostat, 197, 198, 199, 200, 235, 236 Thorium, 88 Thread, 187, 188 Throttle, 192 Thumb-screw, 138, 174 Time for cooking food, 54 Timer, 193 Tin, 155, 156, 158 Ton, 226 Trap, 122, 128 Trays, 176, 197, 200 Treadle, 186, 209 Tungsten, 82, 83, 158 Type, 203, 204, 208 Typewriter, 202, 203, 206 U Utensils for cooking, 44, 155, 156 V Vacuum, 112, 176, 240 cleaner, 147, 148 Valve, 25, 26, 29, 33, 37, 52, 68, 69, 70, 71, 72, 90, 112, 113, 119, 120, 122, 129, 130, 145, 174, 183, 197, 211, 232, 235 Vapor, 40, 41, 145 Vent, radiator, 68 Ventilators, 110, 111, 197, 198, 200 Volt, 82 Voltage, 86, 110, 144, 217 W Warping, 76 Washboard, 134 Wash boiler, 172 Washers for valves, etc., 120 Washing equipment, care of, 136, 138, 139, 141, 142 Washing machines, 132, 133, 135, 136, 209 Waste, 76, 124 Water, 67, 102, 106 closets, 128 coolers, 105, 108 filters, 114 for cooling, 107, 215 for furnaces, 64, 66, 67, 68, 70, 71, 72, 81 heater, 118, 119 meter, 230 motors, 137, 209, 210, 211, 220 tanks, 119 -bath canner, 173 -seal canner, 173 Watt, 82, 84 Weight, 220, 226 Wells, 113, 125 Wheels, 137, 165, 211, 230 Whey separator, 180 Whistle, 56 Wick, 32, 35, 93, 94, 95, 98, 198 Wickless burner, 32, 33 Window, adjustment of, 63, 183 shades, 184 Wire, 43, 46, 110 Wood, 157, 219 Wringer, clothes, 138 mop, 154 Y Yard, 229 Z Zero, 233 INDEX OF ILLUSTRATIONS A