428 



INDEX 



Cynareae, 79 ; on pulsating vacuoles, 



293, 296, 297, 298, 299. 

 Coiling, influence of support on, 40; rate 



and character of, 39 ; free, 36, 37 ; 



homodromousj 37. 

 Colchicum autumnale, thermonastic flower 



of, 113- 



Coleoptile, 193. 



Coleps hirtus, galvanotaxis of, 361. 

 Coleus, 258 ; orientation of leaves of, on 



klinostat, 256, Fig. 47 ; transference 



of stimuli in, 194. 

 Colocasia odora, production of heat by, 



37o, 372, 374) 375> 376; movements 



of, 19. 



Colomb, 324. 

 Colour, influence of, on temperature of 



plant, 380. 



Coloured light, phototactic action of, 326. 

 Columella, geotropic irritability of, 224. 

 Commelinaceae, geotropism of nodes of, 



242. 



Compass-plants, 261. 

 Compositae, closure of capitula of, 103 ; 



movements of stigmas of, 24. 

 Concentration, influence of, on osmotaxis, 



350, 351 ; on pulsating vacuoles, 294, 



296, 297, 298. 

 Conifers, curving of woody stems of, 12 ; 



influence of decapitation on, 191 ; red 



and white wood of, 414. 

 Conjoint effects, 119-28. 

 Conjoint stimulation, general action of, 



6,7. 

 Conjugation, influence of temperature on, 



305- 



Contact, influence of, on direction of stream- 

 ing, 292, 293 ; on growth, 45, 46 ; on 

 formation of suckers, 47 ; on twining, 



Contact-irritability, influence of ether on, 

 144 ; of geotropic induction on, 28 ; 

 persistence of, on a klinostat, 48 ; in 

 twiners, 34, 35, 36. 



Contact-stimuli, mode of perception of, 65, 

 66, 67 ; response of Drosera to, 83, 

 Fig. 27 ; of fungi to, 82, 83 ; of stamens 

 to, 8 1 ; of stigmas to, 82 ; summation 

 of, 69. 



Contractile vacuoles. See Vacuoles. 



Contractility, of streaming protoplasm, 290. 



Contraction, of coils of twiners, 39; in 

 curving organs, 14 ; during curvature, 

 239, 240 ; energy of, in irritable fila- 

 ments, 73, 74 ; influence of, on curva- 

 - ture, 241, 242. 



Convection currents, influence of, on body 

 temperature, 381. 



Convolvulus, 40 ; contortion of flower-bud 

 of, 24 ; direction of twining of, 38 ; 

 C. arvensis, limiting diameter for twin- 

 ing of, 40 ; twining stem of, 34, Fig. 6 ; 

 C. sepium, rate of revolution in, 21. 



Copeland, 165 ; on geotropic curvature, 

 241 ; perception, 199. 



Coprinus, 416 ; C. nivens, heliotropism of, 

 173 ; C. stercorarius, heliotropism of, 

 I73> 1 7S 5 C. velaris, hydrotropism of, 

 183. 



Cordyline, 204 ; geotropism of rhizome of, 

 164. 



Coriandrum, heliotropism in, 194. 



Cork, influence of, on temperature, 380. 



Cornutus, 113. 



Correlation, 415 ; influence of, on curvature, 

 241, 242. 



Correns, 87, 113, 145, 260, 271, 273; on 

 curvatures of tendrils, 246 ; on in- 

 fluence of oxygen on curvature, 143, 

 144 ; mechanism of curvature, 85. 



Cortex, geotropism of, 242, 243. 



Corti, 280, 314, 344 ; on streaming, 289. 



Corydalis claviculata, grasping leaf-tips of, 

 44. 



Cotyledon, heliotropic irritability of, 193, 

 194 ; localization of, 199, 200 ; seis- 

 monic irritability of, 80 ; sleep-move- 

 ments of, 105. 



Crassulaceae, orientation of chloroplastids 



of, 333- 



Grid, 383. 



Crocus, 1 10 ; downward growth of seedlings 

 of, 249 ; opening of flowers of, 97, 98, 

 99, ico ; thermonastic movements of, 

 129, 130, 131, 132, 133, 137; influence 

 of external conditions on, 141 ; C. 

 luteus, photonasty of, 122; thermonasty 

 of, 112, 113, Fig. 32, 114, 116; C. 

 vernus, thermonastic movements of, 



112. 



Crosby, on phobism, 309, 310. 



Cryptomonas ovata, galvanotaxis of, 361. 



Crystallization, production of light by, 384. 



Crystals, distribution of, in cell, 334. 



Cucumis sativus, pits in epidermis of, 66, 

 Fig. 25. 



Cucurbita, 182, 335; excitation of streaming 

 in, 284 ; influence of Oxygen on in, 

 341 ; C. Pepo, 253, 314 ; non-geotropic 

 lateral roots of, 163, hypocotyl of, 

 165. 



Cucurbitaceae, fixation of tendrils of, 47, 

 48 ; touch-corpuscles of, 65. 



Cunningham, 80, 124. 



Curvature, energy of, 1 8 ; internal cause 

 of, 244 ; measurement of, 17. 



Curvipetality, 190. 



Cuscuta, attachment of, 32 ; changes of 

 tone in, 207 ; coiling of, 37, 48, Fig. 16 ; 

 influence of gravity on circumnutation 

 of, 28 ; on twining of, 35 ; of stimuli on 

 excitability of, 70 ; normal twining of, 

 36 ; nuclear movements of, 301 ; twin- 

 ing of, 48, Fig. 1 6. 



Cuticle, splitting of, 148, 159, 160. 



Cyclamen, 24. 



