INDEX 



429 



Cyclanthera, dehiscence of, 148. 



Cylindrogenic activity, 276. 



Cylindrotheca, movements of, 271. 



Cynanchum vincetoxicum, twining of, 38. 



Cynara scolymus, influence of darkness on 

 stamens of, 141 ; mode of movement of, 

 72. 



Cynareae, 8 ; absence of sleep-movements 

 in stamens of, in ; escape of water 

 from filaments of, 76 ; excitability of 

 stamens of, 81, 86, 92 ; influence of 

 anaesthetics on, 144 ; of stimuli on 

 streaming in, 78 ; mechanism of move- 

 ment in, 72, 79 ; rigidity of, 77 ; stretch- 

 ing of cell-walls of filaments of, 16. 



Cyon, 362, 371. 



Cystoclonium purpurascens , coiling of, 46. 



Cystopus, 293. 



Cytoplasm, density of, 336 ; independence 

 of, 10. 



Cytotaxis, 364, 365. 



Czapek, 5, 31, 106, 145, 190, 192, 220, 234, 

 419; on changes of tone, 207, 208, 

 209 ; on geotropism, 163, 164, 168, 170, 

 242, 243, 249, 250, 251, 252, 253, 255 ; 

 on changes of, 213, 214; influence of 

 anaesthetics on, 145 ; on optimal angle 

 for, 217, 218, 219 ; on minimal stimuli 

 for, 211, 212; theory of, 226, 227; 

 influence of oxygen on irritability, 202, 

 203; on localization of sensation, 190, 

 194, 196, 197, 198, 199, 200, 201, 206 ; 

 on tropic after-effects, 212 ; on stroph- 

 ism, 155 ; on torsion, 258, 260, 261. 



Dahlia, 257 ; D. variabilis, changes of tone 

 in, 205. 



Dalbergia, 103; D. linga, pulvinar tendril 

 of, 44, Fig. II ; -- growth of, on con- 

 tact, 45 ; thickening of, 46. 



Dale, 364. 



Dalmer, 182. 



Danilewsky, 1 88. 



d'Arsonval, 408. 



Darwin, 25, 27, 30, 31, 32, 36, 42, 46, 47, 

 48, 81, 82, 85, 87, 91, 92, 97, 102, 103, 

 105, no, in, 113, 118, 126, 145, 155, 

 204, 232, 236, 255, 256, 257, 419; on 

 abnormal twining, 38 ; on aggregation, 

 89 ; on attaching roots and disks, 33 ; 

 on autonomic movements, 19, 24; on 

 chemonasty, 86 ; circumnutation, 21, 

 28 ; climbing plants, 34 ; conduction of 

 stimuli, 90 ; contact-irritability, 35, 69 ; 

 curvature of Dionaea, 80 ; discrimina- 

 tory power of tendrils, 48; indepen- 

 dence of twining and circumnutation, 

 22 ; influence of ether on irritability, 

 144 ; of temperature on circumnuta- 

 tion, 29 ; irritability of Catasetum, 147 ; 

 of Drosera, 83, 84; seismonic of coty- 

 ledons, 80 ; localization of sensation, 

 191, 192, 193, 196, 199 ; on traumatrop- 



ism, 185, 186 ; midday sleep, 105, 106 ; 

 uses of, 100; minimal heliotropic 

 stimuli, 210, 2li ; movements of Aver- 

 rhoa, 104 ; of Mimosa and Drosera, 

 12 ; twining, 35, 38, 40 ; origin of 

 torsion, 41 ; perception and response, 

 1 1 ; reversal of circumnutation, 39 ; 

 tropism, 161, 165. 



Darwin, F., 26, 124, 149, 151, 190, 210,255, 

 258, 419 ; on directive action of light, 

 228, 229 ; influence of temperature on 

 tropism, 225 ; localized perception, 

 197 ; maximal geotropic angle, 217 ; 

 plagiotropism, 257 ; statolith theory, 

 417; tropism, 161, 166, 169, 170. 



Dassen, on forms of curvature, 137, 138. 



Daubeny, 142. 



Daucus, sleep-movements of, 103. 



Death, influence of, on curvature, 246 ; on 

 protoplasmic movement, 292, 298. 



de Bary, 149, 150, 173, 180, 275, 276, 280, 

 289, 293, 294, 328. 



Debski, 230. 



de Candolle, A. P., i, 3, 19,24, 80, 112, 

 152, 155, 166, 381, 383 ; on ephe- 

 meral flowers, 23 ; on heliotropism, 

 161, 229. 



Decapitation, influence of, on autotropism, 

 191 ; -- on galvanotropism, 189; on 

 traumatropism, 186. 



Deformation of protoplasm, 343, Fig. 10. 



Dehiscence, 146 ; influence of light and 

 temperature on, 153. 



Dehnecke, 334, 336, 355. 



Delphinium, 258. 



Demoor, 332, 340, 342. 



Dermatoplasts, movements of, 262. 



Derschau, on petiole-climbers, 47. 



Desmidiaceae, movements of, 274, 275 ; 

 phototaxis of, 325 ; pulsating vacuoles 

 of, 293, 294. 



Desmodium, 294 ; changes of rigidity in 

 pulvinus of, 135 ; production of sudden 

 movement in, 23 ; D. gyrans, 24 ; in- 

 fluence of electricity on movements of, 

 30; of gravity, 27, 126, of induction- 

 shocks, 146, of light, 108-11 ; opti- 

 mum temperature for, 29 ; sleep-move- 

 ments of, 101, Fig. 28, 102, 104; ther- 

 monasty of, 113; variation movements 

 of, 22, Fig. 4. 



Dessaignes, 386. 



Detmer, 106, 144, 151, 170. 



Detto, 380. 



Deutzia, 259 ; changes of tone in, 205. 



de Vries, 24, 34, 36, 39, 85, 205, 220, 231, 

 235, 241, 242, 251, 253, 254, 255, 256, 

 316, 330 ; on aggregation, 89 ; on con- 

 traction of coils of twiners, 39 ; on 

 influence of turgor on curvature, 15, 

 31, 244, 246 ; on nature of twining, 35 ; 

 origin of coiling, 37 ; of torsion, 41, 

 257, 260 ; on streaming, 289, 358 ; tro- 



