548 



INDEX 



Lever, jaw as, 493 



laws of, 493 



second class, 492 



third class, 493 

 Libra, 487 

 Light, absorption and reflection of, 380 



candle-power of, 376 



chemical action of, 380, 382 



cost of, 377 



effect of on fabrics, 371 



effect of position, 339 



how travels, 324 



production of without oxygen, 137 



source of, 324 



transmitted through material, 366 

 Lights, air vitiated by, 180, 181 



candle-power of, 376 



measurement of, 375, 376 

 Lighting, cycle of, 399 



direct, 365 



effect of poor, 367 



globe shade, reflectors for, 368 



indirect, 366 



semi-direct, 365 



semi-indirect, 366 

 Lightning, 394 

 Location, 454 

 Lock jaw, 307 



tetanus, 307 

 Longitude, 454 



table of, 457 

 Lows, 62-68 



affects weather, 63, 65 



path of, 64 



velocity of, 65, 66 

 Lyra, 487 



Machines, 491 



sewing, 501, 502 



simple, 492 

 Magnets, electro, 390 



experiments with, 390 



law of, 391 

 Malaria, 294 t 



Malaria, mosquito of, 294 



preventing, 295 

 Malleability, 446 

 Mantles, manufacture of, 156-7-8 



use of, 377 



screen used in, 142 

 Mirage, 335 

 Mars, 472 



canals on, 473 

 Matches, 140 

 Measles, 306 



after effects, 306 



contraction of, 306 



prevention of, 306 

 Meats, cooking of, 223 

 Mechanical advantage, 397 

 Medicines, alcohol in, 246 



and liquors, 245 



for coughs, 251 



for obesity, 252, 253 



headache, 249 



patent, 246 



poisons in, 247 



Sanatogen as, 248 



Swamp Root as, 247 

 Melting and solidification, 131 



points, 132 

 Metabolism, 196 

 Mercury, 471 

 Metchnikoff, 308 

 Meteors, 469 



of Cape York, 472 

 Meters, accuracy of, 387 



cause of high reading, 387 



error of, 153 



Gas, 148-149 



index gas, 150 



prepayment, 151 



reading of gas meter, 150 



reading of water meter, 150 



watt-hour, 386 

 Microbes, 289 



Microscope, compound, 343 

 Milk, adulteration of, 226 



