600 



INDEX 



Boyle's law, 463. 



Bran, 370. 



Breast water wheel, 558. 



Brick oven, 72, 146. 



Brine, use in refrigeration, 168; 

 how temperature is regulated, 

 168. 



Built-in refrigerators, 161. 



Buoyancy, 115. 



Burner, of kerosene lamp, 6; cen- 

 ter draft, 8; gas, 46. 



Burning point, 4, 29. 



Butter, 362; renovated, 362; test 

 of real, 365; water in, 362. 



Butterine, 363: tax on, 365; test of 

 365. 



Calorie, greater, 107; lesser, 107; 



equivalent in foot-pounds, 551; 



equivalent in horsepower-hours, 



552. 



Calorimeter, 107. 

 Calorimetry, 107. 

 Candle, early, 2; modern, 2; how it 



burns, 3; fresh air, need of, 5; 



sale of in U. S., 3. 

 Canning, 416; domestic, 417; fac- 

 tory, 418. 

 Capillarity, 467. 



Carbohydrates, 348; test for, 349. 

 Carbon cycle, 347, 402. 

 Carbureter, of gasoline stove, 151 ; 



of gasoline gas machine, 37. 

 Casein, 365. 

 Cell division, 382. 

 Cellulose, 349. 

 Centigrade scale, 14; to change to 



Fahrenheit, 17. 

 Centrifugal force, 630, 484. 

 Centrifugal pump, 484. 

 Centrifuge of Babcock machine, 



361. 



Charcoal, 90, 91. 

 Charles' law, 114. 

 Cheese, 365; filled, 366; full cream, 



365; composition of, 366. 

 Chemical, elements, 76; energy, 78; 



change, 78, 79; compounds, 79. 

 Chemistry of combustion, 76-89; 



summary of, 88. 

 Chimney, kerosene lamp, use of, 8 ; 



invention of, 113; draft in, 118; 



construction of, 119. 

 Circular lows, winds about, 259. 



Climate, 288, 281; relation to 

 health, 288; relation to plant 

 life, 289; relation to animal life, 

 290; relation to man, 290; factors 

 determining, 291; effect of wind 

 upon, 298; the ideal, 302; areas 

 of, 303; indoor, 306, 307; why 

 change of may be beneficial, 307. 



Climometer, construction and use 

 of, 281. 



Clouds, 226-234 ; classes and char- 

 acteristics, 231; formation, 232; 

 cumulus, 232; cumulus that may 

 rain, 238; how they change in 

 the passing of a low, 263; indica- 

 tions by, 263. 



Coal, burning of, 93; bituminous, 

 93; anthracite, 93, 109; composi- 

 tion of, 93; -gas, 101; production 

 of, 109; fields of, 111; our ap- 

 parent supply, 109. 



Cocci, 400; pneumococci, 438. 



Coke, 93. 



Colds, 441, 329. 



Cold storage, 171 ; effect on mod- 

 ern life, 171 ; plant, 172; tempera- 

 ture required, 172; control of 

 temperature in, 172. 



Combustion, chemistry of, 88; 

 complete of soft coal, 96; vs. 

 slow oxidation, 345. 



Compression of gases, 579. 



Convection currents, 113 ; cause of, 

 115-120; in the refrigerator, 156; 

 in stove heated room, 120, 332; 

 in chimney, 118; caused by fur- 

 nace, 124; in- hot water heating 

 system, 127; in water front, 500. 



Cookers, fireless, 153. 



Cooking temperature, 152. 



Corn, conditions for growth of, 197, 

 287; flakes, 371; grits, 372; 

 starch, 372; syrup, 373. 



Cotton seed oil, 368. 



Cream separator, 529; advantages 

 of, 532; efficiency of problem, 

 362. 



Culture, or culture medium, 391, 

 425; hay, 398. 



Cumulus clouds, 226, 228, 229, 230, 

 231; formation of, 232; size of, 

 233; showers from, 236; path of, 

 237. 



Cycles of gas engine, 577 



