INDEX 



439 



Carboa dioxide, test for, 22. 

 Carnivorous, defiaed, 312. 

 Catarrh, 389. 

 Catkin, 47. 

 Cell, 29 ; 



as a unit, 194. 

 Cell membrane, 89. 

 Cell sap, 89. 

 Cell tissue, 205. 

 CeUs, 205 ; 



sizes and shapes of, 30. 

 Centipede, poisonous, 246. 

 Centrum, 327. 

 Cephalopods, 270, 273. 

 Cephalothorax, 222. 

 Cerebellum, 401. 

 Cerebrum, 401 ; 



functions of, 403. 

 Cestodes, 217. 

 Chelipeds, 222. / 



Chemical element and compound, 18. 

 Chlorophyll bands, 147. 

 Chlorophyll bodies in leaf, 120. 

 Chromosomes, 29'! 

 Chrysalis, 237, 238. 

 Cicada, 242, 243. 

 Cilia, 191. 

 Circulation, effects of alcohol on, 379 ; 



effect of exercise on, 377 ; 



effect of tobacco on, 381 ; 



in a mammal, 372 ; 



in capillaries, 373, 374 ; 



in crayfish, 225 ; 



in fishes, 279 ; 



in frog, 287, 373 ; 



in kidney, 391 ; 



in man, 370 ; 



organs of, 206 ; 



portal, 362, 372 ; 



pulmonary, 372 ; 



systemic, 372. 

 Clam, fresh-water, shell of, 268 ; 



round, parts of, 269. 

 Class, defined, l.')7. 

 Club mosses, 156. 

 Coelenterates, 207, 208, 209 ; 



compared with worms, 215. 

 Colds, cause of, 394. 

 Coleoptera, 242, 247. 

 Colloid, defined, 358. 



Combustion, 22. 



Composite head, parts of, 44. 



Conjugation, 148, 160 ; 



in black mold, 160 ; 



in paramcecium, 192. 

 Contagious diseases, death rate 



from, 429. 

 Copepod, 231. 

 Coral, madreporio, 209. 

 Coral reefs, 210. 

 Corn, grain of, 69 ; 



production of, 58. 

 Corn grain, foods in, 70, 73. 

 Corn smut, 174. 

 Corolla, 34. 

 Corpuscle, red, function of, 367 ; 



structure of, 367. 

 Corpuscle, colorless, functions of, 368 ; 



structure of, 367, 368. 

 Corpuscles, tactile, 321, 406. 

 Cortex, 87 ; 



in stem, 103. 

 Cotton, 61. 



Cotton boll weevil, 62, 262. 

 Cotyledons, as foliage leaves, 79 ; 



food in, 66 ; 



functions of, 79 ; 



in bean, 65 ; 



of corn, 69. 

 Crab, blue, 229 ; 



fiddler, 229 ; 



giant spider, 230 ; 



hermit, 229. 

 Crayfish, adaptation for protection, 

 222; 



and allies, characters of, 231 ; 



appendages, 224 ; 



external structure, 222 ; 



internal structure, 225 ; 



senses of, 223. 

 Crops, rotation of, 95. 

 Cross-pollination, defined, 38. 

 Crustacea, degenerate, 232. 

 Crustaceans, 222 ; 



habitat of, 231 ; 



parasitic, 232. 

 Crystalloid, defined, 358. 

 Culture, pure, 176. 

 Cuts, treatment of, 378, 394. 

 Cytoplasm, 30, 



