INDEX 



455 



Spark-plug, 365 



Specific gravity, 80 



Specific heat, 105 



Spectrum, 119 



Speed, 11 



Spontaneous combustion, 164 



Springs, 64 



Spruce, 407 



Squares, 429 



Staining, 378 



Starting box, 200 



Starting handle, 363 



Steam, 



amount produced by specific 

 amount of water, 352 



characteristics of, 302 



exhaust heating, 345 



generation of, 302, 327 



heating, 343 



low-pressure heating, 346 



source of, 302 



temperatures of, 324 



valves, 351 

 Steam engine, 328-341 



alignment of pipes, 334 



boiler of, 302 



condensing, 333 



corrosion of pipes, 336 



crank, 331 



governor, 330 



history of, 328 



installation of pipes, 333 



piping material, 337 



principal parts of, 329 

 Steam pressure, 105 

 Storage batteries, 176 

 Strains, effect of, 235 

 Strength of materials, 233-248 



chains, 244 



effect of seasoning on wood, 416 



effects of load of force on body, 

 233 



factors of safety, 243 



need of knowledge of, 233 



table of, 241 



testing laws concerning, 239-24 1 

 Stresses, 



kinds of, 234 



measurement of, 237 



of compression, 239 



of elongation, 238 

 Sublimation, 143, 148 



Sugar pine, 410 

 Switchboards, 



power house, 206 



telephone, 2 14 

 Synthesis, chemical, 130 



Table of, 



apothecaries' weight, 13 



atomic weights, 129 



avoirdupois weight, 12 



circular measure, 12 



colored lenses, 121 



cubic measure, 12 



dry measure, 13 



ductility, 5 



expansion of metals, 108 



factors of safety, 244 



general measure, 13 



infusibility, 5 



land measure, 12 



linear expansion of solids, 109 



liquid measure, 13 



long measure, 12 



malleability, 5 



metric equivalents, 15 



metric measurements, 14-16 



quantities, 13 



square measure, 12 



strength of materials, 241 



tenacity, 5 



time measure, 13 



troy weight, 12 



weight and sp. gr. of liquids, 81 



weight and sp. gr. of metals, 80 



weight of metals per cu. in., 243 

 Tape, steel, 9 

 Taps, 258-260 



determining size of, 259 



teeth of, 259 

 Telegraph, 220-223 



history of, 220 



Morse code, 223 



operation of, 221 



parts of, 220 

 Telephone, 2 13-2 19 



cables, 2 17 



construction work, 219 



distributing frames, 217 



history of, 213 



listening cam, 217 



