354 



INDEX 



Beans, as food, 66. 



roots take in nitrogen, 263. 

 Bell, electric, 319-321. 

 Benzine, 150. 



as a cleaning agent, 227. 

 Benzoate of soda, 253. 

 Bicarbonate of soda, in fire extin- 

 guisher; 55, 56. 



in Rochelle salt, 227. 



in soda mints, 231. 



in seidlitz powder, 231. 

 Bicycle pumps, 202. 

 Blasting, by electricity, 314. 

 Bleaching, 237-243. 



by chlorine, 238-240. 

 Bleaching powder, 239-240. 

 Body, human, 63-64. 



a conductor of electricity, 322. 

 Boiling, 31. 



amount of heat absorbed, 31-32. 



of milk, 32. 



of water, 77. 

 point, 15. 

 Bomb calorimeter, 61. 

 Borax, as meat preservative, 253. 



as washing powder, 226. 

 Boric acid, as meat preservative, 



253. 



Boyle's law, 95-96. 

 Bread, 232-233. 



unleavened, 233. 

 Bread making, 232-235. 

 Breathing, hygienic habits of, 50. 



by mouth, 50-51. 

 Burns, treatment of, 52-53. 

 Butter, adulteration test, 16. 



bacteria in, 133. 

 Buttermilk, 230. 



Caisson, 203-204. 

 Calcium carbide, 152-153. 



in making nitrogenous fertilizer, 



264. 



Calico printing, 249. 

 Calorie, 27-28, 61-62. 

 Calorimeter, 61. 

 Camera, 128-129. 



films, 129. 



lens, 129. 



plates, 129. 



Camping, water supply, 195-197. 

 Candle, 148-149. 



as standard for light measure, 104- 



105. 



Candle power, 105-107. 

 Carbide, calcium, 152-153, 264. 

 Carbohydrates, 64-65, 149. 

 Carbolic acid, 152. 



as disinfectant, 251. 

 Carbon, 56, 66. 



in voltaic cells, 308. 

 Carbon dioxide, 53. 



as fire extinguisher, 55-56. 



commercial use, 55-56. 



in baking soda, 228. 



in fermentation, 234. 



in health, 54. 



in plants, 55. 



preparation of, 55. 



source of, 53. 



test for, 228. 

 Catarrh, 259. 

 Caustic lime, 222. 

 Caustic potash, 222. 

 Caustic soda, 218, 222. 



to make a salt, 227. 

 Caves and caverns, 71. 

 Cell, dry, 310. 



gravity, 309-310. 



voltaic, 306-308, 310. 

 Cells of human body, 63, 64, 66. 

 Centigrade thermometer, 15. 

 Central heating plant, 19. 

 Chalk, in making carbon dioxide, 55. 

 Charcoal, as a filter, 57. 



commercially, 57. 



preparation, 57-58. 

 Chemical action, and electricity, 307, 

 315-317. 



and light, 126, 127. 

 Chemistry, in daily life, 218, 219. 

 Chills, 38. 

 Chloride of lime, in bleaching, 240. 



disinfectant, 251. 

 Chlorine, and hydrogen, 239. 



effect upon human body, 239. 



in bleaching, 238-240. 



influence of light upon, 126. 



presence in salt, 227. 

 Circuit, electric, 321. 



local, in telegraph, 325-326. 

 City water supply, 206-212. 

 Clarinet, 297. 

 Cleaning of material, 226, 243. 



