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. tinctorial) 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, ,145 ; 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. 

 Gledttschia, sleep-movements of, 102 ; G. 



triacantha, seismonic irritability of, 80. 

 Gloriosa sitperba, 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, 2$8, 263, 



269, 340, 415 ; on indirect excitation 



of Dionaea, on twining shoots, 38. 

 Goldfussia, irritable stigmas of, 82 ; G. 



anisophylla, 253. 

 Gonium, 295 ; ciliation of, 264 ; working of 



cilia of, 269; G. pectorale, 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, 



159 ; 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, 1 8. 



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

 getics of, 411 ; 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, 



39, 394, 395, 39- 

 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 



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