496 



INDEX 



Chloral hydrate, poison, 10. 



Chlorine, poison, 4 ; effect on growth, 

 316. 



Chloroform, action on protoplasm, 9, 

 10. 



Chlorophyll, effect of light on position, 

 189 ; temperature and movements, 

 226. 



CHMULEVITCH, heat-rigor, 232. 



CHODAT, electricity and plants, 407. 



Chromic acid, as poison, 3, 4. 



Chytridium, phototaxis, 183. 



CIENKOWSKI, phototaxis, 183. 



CIESIELSKI, traumatropism, 384 ; geo- 

 tropism, 393, 394 ; after-effect, 401 ; 

 tropism, 481. 



Cilia, effect of density on movement, 

 77 ; electric stimulation, 145 ; tem- 

 perature, 227. 



Ciliata, effect on, of oxygen, 3 ; hydro- 

 gen peroxide, 3 ; chloroform and 

 ether, 10 ; strychnin, 26 ; chemotaxis, 

 33 ; of saline lakes, 65 ; density ef- 

 fect, 76, 78, 86 ; phototaxis, 187. 



CLARK, oxygen, 2. 



Cobra poison, 30. 



Cocaine, effect on protoplasm, 24. 



Cockroach, geotaxis, 118 ; thermotaxis, 

 261. 



Coelenterata, electric response, 137 ; 

 phototaxis, 194. 



COHN, phototaxis, 202 ; heat and proto- 

 plasm, 225. 



Cold, 242 ; resistance to, 246 ; extreme, 

 248 ; acclimatization, 257. 



Cold-rigor, 239. 



Colored light, 432-436, 440, 441. 



Crab, copper in blood of, 324. 



Critical temperatures, 460. 



CRIVELLI, food of Amoeba, 328. 



Crustacea, density, 79, 81 ; optimum 

 temperature, 458. 



Cryptogams, water and growth, 350; 

 geotropism, 378; thigmotropism, 381. 



Cryptomonas, chemotaxis, 33. 



Ctenophora, inorganic food, 303. 



Cucurbita, moisture, 352. 



CUENOT, temperature and growth, 458. 



Curare, Amoeba, 26. 



Cyphoderia, molar agents, 100. 



Cytotaxis, 52. 



CZAPEK, phototropism, 471; tropism, 

 482, 483. 



CZERNY, density, 75, 76, 78, 86. 



DALLINGER, heat and Infusoria, 252- 

 256. 



DANILEWSKY, cocaine, 24; lecithin, 

 330. 



Daphnia, phototaxis, 203-206. 



DAREMBRAY, blood serum, 22. 



Dark-rigor, 175, 176. 



DARWIN, C., insectivorous plants, 99; 

 chemotropism, 335; hydrotropism, 

 357; tendrils and twining, 377; thig- 

 motropism, 379, 380, 383; trauma- 

 tropism, 384-386; geotropism, 394; 

 phototropism, 441, 485. 



DARWIN, F., moisture and growth, 252, 

 geotropism, 397. 



DAVIS, desiccation of rotifers, 62, 63. 



DAY, nitrogen, 312. 



Death, 1; by poisons, 2-24; desicca- 

 tion, 60-65; density, 80-83; light, 

 171-175; heat, 231-249; limits, 275- 

 277. 



DEHNECKE, gravity, 113. 



DEHERAIN, temperature and secretion, 

 223. 



DEMOOR, oxygen, 2, 3 ; hydrogen, 5, 6 ; 

 ammonia, 6; oxides of carbon, 6; 

 chloroform, 9; paraldehyde, 21; 

 cold-rigor, 241. 



Density of the medium, effect on pro- 

 toplasm, 70-93; on growth, 362- 

 369. 



DERMANT, heat-rigor, 239. 



Dero, fission and density, 365, 366. 



Desiccation, protoplasm, 59 ; rigor and 

 death, 60, 61; acclimatization to, 65. 



Desmids, phototaxis, 183. 



DETLEFSEN, hydrotropism, 257 ; trau- 

 matropism, 384. 



DEWITZ, chemotaxis, 37; thigmotaxis, 

 106, 107. 



Diamid, poison, 1, 16. 



Diatoms, effect on, of chloral hydrate, 

 10; hydroxylamine, 15; ethylalde- 

 hyde, 21; phototaxis of, 184, 199; 

 silicon food of, 324. 



Differential threshold stimulation, 43. 



Difflugia, molar agents, 101. 



Dioneea, response to contact, 99. 



Dioscorea, light, 419. 



Dodder, twining, 377, 484. 



DOGIEL, curare, 26. 



