INDEX 



489 



Meat, boiled or stewed, 86 



cold storage, iio-m 



composition of, 83-84 



effect of heat upon, 84-86 



inspection of, 89-90 



preservation by drying, 112 



ptomaine poisons, 109110 



roasts and steaks, 85-86 



tapeworms in, 89, 90 



trichinae in, 89, 90 

 Melting point, 19, 46 

 Mercerized cotton, 138 

 Mesquite, 350, 351 

 Metals, 173-181 



alloys, 178-179 



aluminium, 179-180 



calcium, 181 



characteristics of, 180-181 



conduction of heat by, 29 



copper, 175-176 



gold, 179 



iron, 174-175 



lead, 178 



obtained from ore, 173, 215 



potassium, 181 



preservation of, 182 



sodium, 181 



tin, 176-177 



zinc, 177-178 



Metamorphic rock, 419-421 

 Microorganisms, 268 

 Microscope, 254 

 Milk, effect of heat upon, 83 



formaldehyde in, 115 



inspection of, 203 

 Mineral matter, 361 



in food, 72 



in water, 357^5 

 Mirror, 243-246 

 Mixed goods, 134-135 

 Moisture in the atmosphere, 43-4 

 Mold, 106 

 Mollusks, 472, 478 

 Mordants, 170-171 

 Morse code, 222 



Mortar, 66, 181, 421 

 Mosquitoes, 474-476 

 Motor, 230-231 

 Mt. Lassen, 412, 413 

 Mt. St. Elias, 408 

 Mt. Vesuvius, 413 

 Mountains, 405-410 



and rainfall, 352 



extinct volcanoes, 415 



formation of, 408-410 

 Mouth, breathing, 55-56 



digestion begun in, 92-93 

 Music, 283 

 Musical instruments, 284-288 



Naphtha, 126, 317 

 Narcotics, 191-193 

 Nearsightedness, 260 

 Neutral substances, 142 

 Niagara Falls, 311 

 Nitrogen, 186-188 



in atmosphere, 387 



in protein, 72 



prevention against fire, 387 

 Noise and music, 283 

 Non-conductors, fireless cooker, 30 



of electricity, 220 



of heat, 29-30 



refrigerator, 31 



vacuum bottle, 32 

 Nose breathing, 54-56 



Oboe, 287 

 Obsidian, 417, 418 

 Ocean, currents, 28 



source of potash, 189 



waves, 373, 376 

 Ocotillo, 351, 353 

 Ohm, 213 

 Oils, creosote, 185 



drying and non-drying, 182-183 



kerosene, 123-125, 276 



linseed, 183, 184 

 Oleomargarine, 101 

 Olive oil, 1 01, 135 



