4 2 4 



INDEX 



of, 171 ; origin of apical curvature of, 

 27 ; A. hederacea, climbing of, 33 ; 

 A. qninquefolia, disks of, 47. 



Amphilobium Mutisii, disks of, 47 ; thicken- 

 ing of tendril of, 46. 



Amylobacter,povtzr of discrimination in, 21 5. 



Anaerobes, production of heat by, 377, 378. 



Anaerobiosis, influence of food on, 340 ; in 

 Characeae, 341, Fig. 59, 342. 



Anaesthetics, influence of, on chemotaxis, 

 421 ; on production of electricity, 

 397 ; - - on streaming, 342 ; - - on 

 transference of stimuli, 94. 



Anagallis amarella, hydronastic flowers of, 

 117 ; A. coerulea, 117. 



Anaklinotropism, definition of, 155. 



Anastatica hierochuntica, dispersal of, 151. 



Anatomic stimuli, definition of, 6. 



Anatomy of tropic organs, 243, 244. 



Andrews, on influence of centrifugal force 

 on cells, 335, 336. 



Anemone nemorosa, thermonastic flowers 

 of, 113 ; influence of gravity on, 127 ; 

 A. stellata, thermonasty of, 114; 

 thermotropism of, 177. 



Antagonistic tissues, action of, 14, 18. 



Antherozoids, chemotaxis and osmotaxis 

 of, 344, 345? 349 5 periodicity of swarm- 

 ing of, 267 ; phototaxis in, 325. 



Anthers, influence of temperature on open- 

 ing of, 113. 



Anthriscus sylvestris, changes in density 

 of sap of, 247. 



Antidromous torsion, 41. 



Antiferments, 227. 



Antirrhinum, climbing of, 45. 



Apobatic, 309. 



Apostrophe, 333. 



Apotropism, definition of, 155. 



Arachis hypogaea, geotropic peduncles of, 

 165. 



Arctotis, irritable stigma of, 82. 



Areschoug, 248, 249. 



Argotaxis, 309. 



Aristolochia sipho, direction of twining of, 

 38. 



Aroids, heat-production of, 370-7 ; tropic 

 irritability of aerial roots of, 164, 172, 



173, 



Artabotrys, 45, 46, 51, Fig. 17. 



Arthur, on streaming, 289 ; in fungi, 284. 



Arum cordifolium, heat-production of, 

 372 ; A. italicum, 368 ; heat-produc- 

 tion of, 372, 374, Fig. 67, 376; A. 

 maculatum, heat-production of, 372, 

 376 ; luminosity of, 383. 



Ascherson, 151, 383. 



Asci, dehiscence of, 149, 150, Fig. 34. 



Ascobalus, 294 ; A . purpureus, influence of 



light on dehiscence of, 153. 

 . Ascomycetes, mode of spore dispersal in, 

 146. 



Ash, torsion of, 233. 



Askenasy, 19, 29, 379; on action of 

 polarized light, 176; on dehiscence of 

 stamens, 148. 



Asparagin, influence of, on amoeboid move- 

 ment of nuclei, 275 ; repellent action 



of, 353- 



Aspergillus, indifference of, to contact, 83 ; 

 A.fumigatus, heat production of, 370 ; 

 A. niger, chemotropism of, 181. 



Asphodelus luteus, curvature of peduncle 

 of, 27. 



Asplenium trichomanes, movements of, 30. 



Assimilation, influence of, on surface-ten- 

 sion, 283. 



Astasiaproteus, chemotaxis of, 347. 



Astruc, 222. 



Atragene, 44. 



A triplex, movements of stamens of, 147 ; 

 A. latifolid, geotropism of, 165. 



Atropa belladonna, 253. 



Aubrietia deltoidea, 379. 



Autogenic stimuli, definition of, 2. 



Autonomic stimuli, definition of, 2. 



Autonyctitropism, 416. 



Autotropism, 189-92. 



Auxanographic method, 386. 



Auxotonic, definition of, 15. 



Avena, 187, 234; change of irritability in, 

 5; hygroscopic awns of, 151; in- 

 fluence of darkness on nutation of, 30 ; 

 irritability of cotyledon of, 198, 199 ; 

 time of reaction of, 211 ; transference 

 of stimuli in, 200 ; upward curvature 

 of, 237 ; A. sativa, heliotropism of 

 cotyledons of, 193, 194, 198. 



Averrhoa Bilimbi, influence of temperature 

 on circumnutation of, 29 ; spontaneous 

 movements of, 104 ; thermonastic 

 leaves of, 113. 



Baccarini, 95. 



Bacillus megatherium, osmotaxis of, 352, 

 353; B. phosphorescent, 385, 386; B. 

 Solmsii, 420 ; B. subtilis, chemotaxis 

 of, 346 ; B. virens, 306. 



Bacteria, chemotaxis of, 180, 346, 347; 

 galvanotaxis of, 361 ; luminous, 382, 

 383 ; production of heat by, 366. 



Bacterium chlorinum, 306; B. indicum, 

 382 ; B. luminosum, 382 ; B. Pfliigeri, 

 382 ; B. phosphorescens, 382, 383, 387 ; 

 B. photometricum, phobic movements 

 of, 306, 307, 308, 309, 310, 312, 320 ; 

 phototaxis of, 321 ; B. termo, 306, 

 421 ; chemotaxis of, 346, 347, 350 ; 

 discriminatory sense of, 214; sensi- 

 tivity of, 354 ; B. 'uernicosum, 313 ; 

 B. Zopfi, 317. 



Ball, 245. 



Baranetzsky, 21, 29, 31, 34, 39, 40, 112, 

 232, 233, 236, 320, 326, 337 ; on asym- 

 metric circumnutation, 35 ; diageo- 

 tropism of twiners, 37 ; influence of 



