INDEX 



Abies, torsion of twigs of, 255. 



Abrus, sleep-movements of, 102. 



Absorption, energy of, 409. 



Acacia, 257 ; A. lophantha, 102 ; influence 



of gravity on sleep-movements of, 125 ; 



of light on daily movements of, 108, 



109, no, in; latent period of, 68; 



photonastic movements of, 105 ; varia- 



tion movements of, 22. 

 Accommodation to stimulation, 9. 

 Acer, 259. 

 Acetabularia mediterranea, orientation of 



chloroplastids of, 328. 

 Acid, changes in production of, during 



curvature, 247 ; chemotactic action of, 



345 ; influence of, on streaming, 343 ; 



repellent action of, 35 1 ; tropic and 



tactic action of, 420, 421. 

 Aconitum, orientation of flower of, 258. 

 Acrasieae, cytotaxis of, 365 ; fusion of, 



365 ; phototaxis of, 326. 

 Adanson, 273. 

 Aderhold, 274, 325, 347 ; on geotaxis, 336, 



337 ; on rheotaxis, 356. 

 Adhatoda cydonaefolia, rate of revolution 



in, 21. 

 Adonis vernalis, thermonastic flower of, 



Adoxa moschatellina, changes of tone, 205, 

 206 ; influence of gravity on photo- 

 nasty of, 127 ; tropism of runners of, 

 104. 



Aeration, influence of, on geotropism, 182. 



Aerial stems, orientation of, 249. 



Aerobes, evolution of heat by, 372, 373-7. 



Aerotaxis, 347. 



Aerotropism, 179, 182. 



Aeschynomene indica, 95. 



Aesculus, geotropism of twigs of, 232; 

 origin of movement in flower of, 27 ; 

 A. hippocastanum, 375. 



Aethalium, 304 ; A. septicum, 317 ; chemo- 

 taxis of, 348, 352 ; consistency of, 279, 

 282 ; pulsating vacuoles of, 295. 



Agardh, 383. 



Agaricineae, geotropism of, 165. 



Agartcus, 416; production of heat in, 366, 

 373; A. Gardneri, luminosity of, 382, 

 383; A. igneus, 383; A. melleus, 

 383 ; A. noctilucens, 383 ; A. olearius, 

 luminosity of, 383, 385, 387. 



Aggregation, 88, 89; recovery from, 90; 

 in Drosera, 78. 



Agropyrum, plagiotropism of radial rhizome 

 of, 156, 157. 



Air-pressure, influence of, on movement, 

 85, 87 ; pulvinar, 76. 



Aitiogenic stimuli, definition of, 2. 



Akebia quinata, free coiling of, 37 ; rate of 

 revolution in, 21. 



Albumin, electrical conductivity of, 392. 



Alcaliotropism, 179. 



Alchemilla, 113, 182. 



Aldrovanda, influence of temperature on 

 leaf of, 113; re-expansion of leaf of, 

 87 ; seismonic irritability of cotyledon 

 of, 80 ; transference of stimuli in, 91 ; 

 A. vesiculosa, irritability of, 81. 



Algae, coiling of, 46 ; irregular curvatures 

 of, 23 ; production of electricity by, 395. 



Alisma, movements of, 19. 



Alkalies, influence of, on pulsating vacuoles, 

 298 ; on streaming, 342, 343. 



Allassotonic, definition of, 15. 



Alliaria officinalis, influence of shaking on 

 percentage of sugar in, 248. 



A I Hum, geotropism of cotyledon of, 165 ; 

 heliotropism of roots of, 173; move- 

 ments of, 20; of peduncle of, 19. 



A. controversum, curvature of peduncle of, 

 27 ; A. ursinum, 258. 



Alstromeria, 258. 



Alveolarplasm, 303. 



Amaranthus, sleep-movements of, 103. 



Ambronn, 28, 39; absence of contact on 

 irritability in twiners, 35 ; origin of 

 homodromous curvature, 37 ; of torsion, 



41. 



Amici, on streaming, 289, 290. 

 Amicia, influence of gravity on sleep-move- 

 ments of, 125. 

 Amitosis, types of, 303. 

 Ammonia, action of, on motile stamens, 87. 

 Ammonium carbonate, influence of, on 



movement, 30 ; salts, chemonastic 



action of, 85 ; chemotropic action of, 



181. 

 Amoeba, 275, 317; influence of streaming 



on division of, 285 ; A. proteus, 299 ; 



A. radiosa, 269. 

 Amoeboid movement, 275 ; influence of 



light on, 320; mechanics of, 276-81; 



origin of, 282, 283 ; rapidity of, 276. 

 Amorpha fruticosa, sleep-movements of, 



102, Fig. 29. 

 Ampelopsis, 47, Fig. 15, heliotropic tendrils 



