292 



INDEX 



Schizanthus Grakami, grafting of, on po- 

 tato, 176. 



Schmid, 123, 131, 158, 206. 



Schmidt-Nielsen, 258. 



Schmitz, 29, 32, 129, 168, 201, 238. 



Schober, 88, 105. 



Scholtz, 128, 134. 



Schomburgh, 213. 



Schostakowitsch, 84, 91^ 117, 167. 



Schrieber, 81, 82, 116. 



Schroder, 210, 252, 253; on resistance to 

 desiccation, 250, 251, 255. 



Schroter, 90. 



Schiibler, 211, 239. 



Schiitt, 32, 178. 



Schultze, 231. 



Schulzer v. Miiggenburg, 90, 94. 



Schumacher, 238. 



Schumann, 71, 144. 



Schwarz, 13, 16, 40, 108, 129, 215, 260, 262 ; 

 on causes of annual rings, 216 ; on in- 

 fluence of centrifugal force on growth, 

 no; contact on root-hairs, 129. 



Schwendener, 28, 30, 46, 47, 49, 55 ; on 

 mechanical tissues, 53, 54 ; on me- 

 chanics of tissues, 59 ; on phyllotaxis, 

 1 44 ; on relation of stretching to growth, 

 60. 



and Krabbe, 9, 64, 65. 

 Sciadocalyx Warszewiczii, minimal tem- 

 perature for, 233. 



Sclerenchyma, influence of strains on de- 

 velopment of, 54, 127. 



Secale^ growth of filaments of, 17 ; S. cereale, 

 intercalary growing zone of, 12, Fig. 5. 



Secondary growth, influence of strains on, 

 128. 



thickening, influence of contact on, 129. 

 Sedum elegans, resistance of, to desiccation, 



250. 



Seedlings, growth of, at varying tempera- 

 tures, 77 ; influence of cold on, 236 ; 

 periodicity in, 203 ; resistance of, to 

 desiccation, 252, 253. 



Seeds, germination of, under water, 122 ; 



when unripe, 252, 253 ; influence of 

 desiccation on, 210, 254; light on 

 germination of, 92, 93 ; residual water 

 of, 251 ; resistance of, to heat, 229; 



to low temperature, 237 ; resting 

 periods of, 207 ; soaked, resistance of, 

 to cold, 245. 



Selaginella, anisophylly of, 154; changes 

 of symmetry in, 149; S. lepidophylla, 

 resistance of, to desiccation, 254. 



SemperTjivum, influence of moisture on 

 length of internodes in, 100; S. tabu- 

 laeforme, freezing-point of, 242. 



Sendtner, 211. 



Senebier, 91, 102, 229 ; on etiolation, 88. 



Senecio crassifolius , ice-formation in, 240 ; 

 S. vulgaris, influence of cold on, 236 ; 

 resistance of, to cold, 232. 



Senile decay, 221. 



Senn, 118. 



Sensitizer, action of, 105. 



Serres, on thermophiles, 77. 



Sexual and symbiotic affinity, 176. 



Seynes, de, 260. 



Shape, causes of, 136 ; internal factors con- 

 cerned in, 179. 



Shearing stress, 61. 



stresses, 50 ; magnitude of, 63. 



Shoots, regeneration of, 169. 



Sigmund, 114, 260. 



Silica, influence of, on growth of cell-wall, 

 33 ; on tensile strength, 55. 



Silver salts, influence of dissociation on 

 poisonous action of, 273. 



Sinapis alba, influence of light on growth 

 of roots of, 96 ; temperature limits for 

 growth of, 76. 



Sirodot, 91. 



Skeletal framework, character of, 51 ; ar- 

 rangement of, 52-4. 



Sliding growth, 45, 46. 



Sodium chloride, poisonous action of, 257, 

 262. 



Sokolowa, 5, 33, 34, in, 129. 



Solatium tuberosuni) minimal temperature 

 for, 232. 



Soldanella, early flowering of, 79. 



Solms-Laubach, 192. 



Solvay, 1 06. 



Somatophytes, definition of, 4 ; transition 

 forms to, 6. 



Sonntag, 10 ; on influence of lignification 

 on elasticity, 55. 



Sorauer, no, 120, 133, 224, 263. 



Sorel, on accommodation, 262. 



Sorokin, 102. 



Sound-waves, influence of, on growth, 



131- 



Species, definition of, 191. 



Spencer, 136. 



Sphacelaria, growth of, 5 ; size of apical 

 cells of, 38. 



Sphaerella nivalts, growth of, at low tem- 

 peratures, 79; resistance of, to cold, 

 238. 



Sphaerobolus slellatus^ influence of light on, 

 90. 



Sphaerocrystals, solution of, 36. 



Spiraea filipendula, growth of cell -walls 

 of, 30. 



Spirillum, influence of desiccation on, 256. 



Spiro, 230. 



Spirogyra, 40 ; action of copper on, 270 ; 

 dividing size of cells of, 38 ; embryonic 

 character of, 4; growth of cells of, 

 33 ; influence of cold on, 238 ; 

 external conditions on reproduction of, 

 198; light on cell-division in, 98; 

 on conjugation of, 91 ; plas- 

 molysis on, 257 ; nuclear fragmenta- 

 tion in, 41 ; planes of division in, 42 ; 



