INDEX 



445 



chemotaxis,2i5,343, 345, 346, 347, 348, 

 352 ; on geotropic curvature, 241 ; on 

 influence of darkness on nutation, 30 ; 

 of external conditions on irritability, 

 203 ; on localization of sensation, 193, 

 194, 196, 197, 198, 199, 200; on osmo- 

 tropism, 178 ; on phototaxis, 323, 324. 



Roucheria, 45 ; thickening of hooks of, 46. 



Roux, 364, 365. 



Royer, 113 ; on ephemeral flowers, 23 ; on 

 sleep-movements, 112. 



Roz, 148. 



Rubidium salts, chemotactic action of, 350. 



Rubner, 371, 377, 409. 



Rubus caesius, orientation of, 250. 



Rumph, 383. 



Runners, geotropism of, 164; orientation 

 of, 249, 250. 



Ruta graveolens, movements of stamens of, 

 23, Fig. 5 ; influence of darkness 

 on, 30. 



Riitzow, 235. 



Saccharum offitinarum, geotropism of, 242. 



Sachs, i, 19, 25, 27, 30, 37, 46, 188, 191, 

 192, 204, 206, 207, 211, 220, 223, 232, 

 233, 234, 236, 237 ; on curvatures due 

 to rubbing, 82 ; on daily periodicity, 

 112; on directive action of light, 228, 

 229 ; on geotropic curvatures of split 

 roots, 241, 242, 243; on growth of 

 hanging shoots, 36 ; on hydrotropism, 

 183 ; on influence of centrifugal force 

 on Marchantia, 251 ; of external 

 conditions on streaming, 314, 315, 316, 

 318 ; of light on Marchantia and 

 Ivy, 252, 253 ; of temperature on 

 pulvini, 141, 142 ; on movements of 

 zoospores, 324 ; on nature of nutation 

 movements, n ; on optimal angle, 

 217; on streaming, 290; on shadow 

 figures, 333; on tropism, 161, 163-7, 

 168, 171, 174-6; after-effects, 212; 

 on rate of growth during curvature, 

 238, 239, 240; on Weber's Law, 213. 



Sagittaria, 204. 



Salix, 259 ; minimal heliotropic stimulus 

 for, 211. 



Salts, influence of, on pulsating vacuoles, 

 298. 



Samassa, 340, 341, 342. 



Saposchnikow, 237. 



Saprolegnia, 269, 293, 307, 308, 325, 421 ; 

 chemotaxis of, 214, 347, 349, 353; 

 chemotropism of, 180, 181. 



Sarothamnus, 148. 



Sarracenia, aggregation in, 90. 



Saussure, 373, 374, 375- 



Saxifraga, staminal movements of, 24; 

 influence of darkness on, 30; move- 

 ments of style, 24. 



Scabiosci) sleep-movements of, 103. 



Scarlet-runner, early development of, 33 ; 

 limiting diameter for twining of, 40. 



Schaefer, 315. 



SchafFner, 260. 



Schaudinn, 304. 



Schellenberg, 249. 



Schenck, 21, 32, 34, 39, 40, 42, 47, 48, 182, 

 317, 360, 364 ; on twining, 38. 



Schenkemeyer, 73. 



Schilling, 22, 414; on response to forced 

 curvatures, 124. 



Schimkewitsch, 303. 



Schimper, 38,90, 1 73; on orientation of chloro- 

 plastids, 327, 328, 329, 330, 332, 333. 



Schizostega (Schistostegd), 329, 384. 



Schleicher, 356. 



Schleiden, 289. 



Schmidt, O., 25 5, 257. 

 - P., 332, 384. 



Schmitz, J., 165. 



Fr., 327, 330, 375, 376. 



Schober, 163, 218 ; on action of Rontgen 

 rays, 176. 



Scholtz, 27, 28, 205. 



Schroder, 273, 274. 



Schrodt, on cohesion mechanism, 151, 152. 



Schiibler, 112. 



Schultze, 315 ; on movements of Diatoms, 

 271, 272, 273; of Oscillaria, 274; 

 on protoplasmic streaming, 355. 



Schulz, 19, 23, 24, 373. 



Schuman, 294. 



Schiitt, 263, 264, 270, 274, 323 ; on move- 

 ments of Diatoms, 273 ; on stimulatory 

 plasmolysis, 75. 



Schwarz, 236, 268 ; on geotaxis, 336, 337, 

 338 ; on Weber's Law, 213. 



Schwendener, 12, 13, 18, 27, 34, 39, 40, 75, 

 77, 104, no, 124, 152, 205, 230, 233, 

 255, 258, 259, 260, 263, 357, 360; on 

 curvature of chloroformed pulvini, 139, 

 operated, 13,8; on dorsiventrality, 

 258; on mode of twining, 35; on origin 

 of homodromous coiling, 37; on torsion, 

 41 ; tortism, 155. 



Scirpus maritimus, 204 ; plagiotropism of 

 rhizome of, 156, 157, 164. 



Scleroderma, production of heat by, 366. 



Scramblers, 32. 



Scrophularia, 258. 



Scyphanthus elegans, reversal of twining 



in 39- 



Scytosiphon lomentarius> 324. 

 Season, influence of, on orientation, 250. 

 Secale, geotropic response of, 242. 

 Seckt, 176. 



Secretion, use of, for attachment, 48. 

 Seddig, 302. 



Sedum, orientation of chloroplastids of, 329. 

 Seedlings, autonomic movements of, 20; 



commencement of circumnutation in, 



21 ; influence of temperature on, 



29; geotropism of, 165. 



