Fuel, 16, 58, 65, 76, 88, 119 economical use of, 19, 20, 28, 59, 66 Funnel, 133, 167, 168 Furnace, 57, 62, 63, 64, 75, 222 Fuses, 43, 46, 86, 144 G Gage, 67, 69, 70, 73, 117 Gage, steam, 72, 173 Gallon, 228 Gas, 26, 34, 35, 36, 37, 38, 40, 58, 88, 108, 192, 199, 214, 215, 219, 221, 230 burners, 77, 79, 90, 144 consumption, 23, 28, 29, 66 formation, 96, 97, 98 kinds of, 29, 91, 220, 222, 223 Gasoline, 89, 97, 99, 140, 219, 223 burner, 37, 96 engine, 119, 137, 212, 215 Gasoline-gas, 29, 37, 91, 220 Gears, 192 Generation of heat and gas, 219, 220 Generator, 96, 97, 145, 223 Gill, 227, 228 Glass utensils, 156, 157, 158 Graduate, 227 Gram, 226 Granite ware, 156, 157 Grate, 16, 58, 65, 74, 76 Grater, 160 Gravity lamp, 96 Gravity, specific, 217, 237, 239 Grinder, 159, 162 H Heat, 29, 48, 89, 156, 158, 218 production of, 42, 140, 143, 200, 219 use of, 45, 50, 57, 69, 78, 80, 140, 143, 176 Heater, 65, 77, 79, 80, 81, 118, 119, 135, 141, 143, 196, 197 Hectograph, 205, 206 Hectoliter, 228 Hectometer, 229 Hinge, 184, 185 Homogenizer, 180 Horse power, 210 Hot-water furnace, 64 Hot-water tank, 117 Humidity, 239 Hundred-weight, 226 Hydrometer, 217, 237, 238, 239 Hygroscope, 239 I Ice, 100, 101, 102, 103, 104, 166, 219 Iceless refrigerator, 105, 106 Incubator, 196, 201, 235 adjustment of, 199 Ignition of gas, 140, 214, 215 Illumination, 28, 77, 78, 82, 84, 85, 88, 218, 219 Inch, 228, 229 Ink, 205, 208 Insulation, 19, 46, 50, 55, 57, 66, 102 Iron, 155, 156, 158, 236 Ironing board, 144 Irons, 142, 144, 145, 146 J Jars, fruit, 176 Jellometer, 237 Jugs, 107 K Kerosene lamps, 93, 95 oil, 28, 138, 219 stoves, 31, 79, 80 Kisselguhr filter, 114 Keyboard, 202, 204 Kilogram, 226 Kiloliter, 228 Kilometer, 229 Kilowatt, 82, 232 Kneading machine, 165 Knives, 159, 163, 196 Knocking, cause of, 71, 214 L Lard press, 163 Lamp, adjusting burners, 89, 90, 93, 94 electric, 82, 83, 84, 87 gas or oil, 91, 92, 94, 95, 96, 196, 198, 199, 215 Laundry tubs, 127 Lawn mower, 195 Lava tip, 89 Leather, preventing shrinking of, 112 Lever, 72, 154, 163, 190, 236 Light, 83, 84, 85, 86, 98 Lights, 82, 88, 98 Lighters, 28, 91, 215 Lighting, lamps, 89, 90, 94, 95 stoves, 25, 27, 33, 34, 37, 38, 78, 79, 80 Lighting plants, 86, 114 Lime, 221 Lining refrigerator, 101 Lignite coal, 219 Liquify, sewage, 124, 125 Liquids, 237 Liter, 227, 228 Locomotive washer, 135 Logs, gas, 78 Lock-stitch, 186, 188 Lubrication, 193 M Mangles, 141 Mantles for lamps, 88, 89, 90, 91, 95, 98 Manufactured gas, 78, 89, 91 Maximum thermometers, 234 Mazda lamps, 82, 83, 84 Measurements, 225 Melting ice, 103 Metal, conductivity of, 156, 158