INDEX 



433 



Garreau, 372, 374. 



Carrey, 309, 311 ; on chemotaxis, 344, 348 ; 



on phototaxis, 6. 

 Garten, 394. 

 Gas chamber, 315, Fig, 52, 338, Fig. 57 ; 



vacuoles, uses of, 263. 

 Gaudichaud, 383. 



Genista, opening of flower-buds of, 23 ; 

 G. tinctoria, opening of flowers of, 148. 



Gentiana campestris, influence of light on 

 flower of, 1 06 ; G. cruciata, 379. 



Geoheterauxecism, 257. 



Geostrophism, 257. 



Geotactic irritability, 268, 336 ; changes of, 

 337 ; limit of, 338 ; nature of, 226. 



Geotortism, 257. 



Geotropic curvature, changes of turgor 

 during, 139 ; influence of anaesthetics 

 on,,i45 ; of oxygen, 143 ; production 

 of reducing substances during, 227. 



Geotropic induction, influence of, on growth 

 and respiration, 208 ; on nutation, 28 ; 

 optimal angle for, 217, 218; time of, 

 210. 



Geotropic induction and response, separa- 

 tion of, 145. 



Geotropic irritability, localization of, 196, 

 197,242,243. 



Geotropic sense, 221, 223,224; sensitivity, 



211. 



Geotropic stimuli, channels for, 201, 202 ; 



rate of transference of, 200. 

 Geotropism, definition of, 154, 155, 162, 



416, 417 ; influence of aeration on, 182 ; 



of light on, 249 ; of lateral roots, 163 ; 

 of leaves of grasses, 416 ; of rhizomes, 

 164 ; of seedlings and sporangiophores, 

 165 ; of twiners, 35, 36 ; localization of, 

 418 ; nature of, 5, 220, 221, 222, 223, 

 224, 225, 226. 



Geovanozzi, 150. 

 Gerasimoff, 303. 

 Germination, influence of Rontgen and 



radium rays on, 415 ; production of 



heat during, 369, 370. 

 Giesenhagen, 225. 

 Giessler, on curvature of operated pulvini, 



138. 



Gildemeister, 394. 

 Glechoma, 259 ; plagiotropism of runner of, 



156, 157 ; G. hederacea, seasonal varia- 

 tion of geotropism in, 250. 

 Gleditschia, sleep-movements of, 102 ; G. 



triacantha, seismpnic irritability of, 80. 

 Gloriosa superba, coiling leaf-tips of, 44, 45, 



Fig. 12. 

 Glossostigma elatinoides, irritable stigma 



of, 82. 



Glucose, influence of, on luminosity, 386. 

 Glycerine, action of, on motile organisms, 



352 ; chemotropic action of, 181. 

 Godlewski, 229. 

 Goebel, 23, 42, 80, 81, 83,90, 150, 151, 164, 



182, 193, 204, 206, 249, 254, 258, 263, 

 269, 340, 415 ; on indirect excitation 

 of Dionaea, on twining shoots, 38. 



Goldfussia, irritable stigmas of, 82 ; G. 

 anisophylla, 253. 



Goniitm, 295 ; ciliation of, 264 ; working of 

 cilia of, 269 ; G. perforate, 296, 421 ; 

 reversal of movement of, 267. 



Goosegrass, mode of climbing of, 32. 



Goppert, 144, 287, 370, 372, 379, 381. 



Gramineae, curvature of nodes of, i. 



Grantz, 175. 



Granulation, 89 ; removal of, 90. 



Graphic representation of tropic reactions, 

 215. 



Grass, self-heating of, 368. 



Grass-haulm, geotropic summation in, 218. 



Gravity, influence of, on tropic tone, 158, 

 *59 j on autonomic movement, 26 ; 

 on circumnutation, 28 ; on contact 

 irritability, 48; on curvatures of 

 peduncles, 27 ; on distribution of 

 sap, 247 ; on growth, 245 ; on 

 hyponasty, 257 ; on photonasty, 127; 



on oscillations of radicle, 24 ; on 

 reduction of time of reaction, 214 ; on 

 revolution of leaflets of Desmodium, 

 22 ; on sleep-movements, 124, 125, 

 126; on streaming movement, 284, 

 288; on-thermonasty, 127; on 

 torsion, 257, 258, 259 ; on turgor, 

 244 ; on twining, 33, 35. 



Gray, Asa, 30. 



Growing zones, influence of length of, on 

 curvature, 18. 



Growth, awakening of, in leaves, 415 ; ener- 

 getics of, 41 1 ; importance of, in move- 

 ments of Dionaea^ 80; influence of 

 arrest of, on irritability, 203, 204 ; 

 of attachment of threads on, 25 ; of 

 attachment in climbers, 36; of 

 curvature on rate of, 15, 208, 238, 239, 

 240, 241 ; of gravity on, 231, 232 ; 



of movements of sensitive plants on, 

 68, 72 ; of, on production of heat, 

 377 ; rate of, in inverted organs, 217, 

 417 ; relation of, to circumnutation, 29, 

 31 ; to movement, 13, 14, 15, 16 ; 

 secondary influence of contact on, 45, 

 46 ; stimulatory action of temperature 

 and light on, 129-34 ; causes of, 

 139-40 ; influence of external con- 

 ditions on, 141-4. 



Guillemin, on heliotropic action of rays of 



different wave-length, 176. 

 Guillon, 163. 



Haake, on production of electricity, 389, 



390, 394, 395, 396. 



Haberlandt, 13, 22, 65, 69, 71, 74, 75, 80, 

 81, 82, 83, 91, 93, 147, 150, 152, 180, 

 201, 217, 232, 242, 243, 334, 379, 417 ; 

 on geotropic causation, 223, 224 ; on 



PFEFFER. Ill 



Ff 



