INDEX 



351 



Townsend, investigations on correlations 



in growth, 304 



Tradescantia, action of stomata, 198 

 carpotropic movements of, 307 

 division of nuclei, 279, 281, 282 

 effects of electricity on, 104, 105 

 geotiopic perception in, 72 

 grafting of, 322 

 influence of alkaloids on, 56 

 of carbon dioxide on, 44 

 of shock on, 1 1 

 of temperature on, 73 

 leaves of, 62, 63 

 plasmolysis of hairs of, 180 

 Translocation, channels of, 240 



of carbohydrates from leaves, 241 

 of plastic material, 239, 240 

 Transpiration, 198, 212 



factors affecting, 203, 204 

 influence of light on, 206 



shock on, 21, 22 

 energy used in, 250, 251 

 Traumatropic curvatures, 34-36 

 Trichia, hydrotropism of plamodium of, 



68 

 influence of mechanical shock upon 



plasmodia of, 10 



Tri folium, nyctitropic movements of, 141 

 Trillium ) resting period of, 298 

 Triticum sattvum, in liquid hydrogen, 



90 



water cultures of, 223 

 Tropaeolum, photosynthesis in, 228 

 Trophic forces, 3, 4 

 True, on toxic action of dissociated 



salts, 52, 53, 54, 55 

 Tsuga, mycorhizas of, 245 

 Tsukamoto, on action of alcohol upon 



organisms, 51 

 Tulip, growth of leaf, 286 



movements of flowers, 99, loo 

 Turgidity, imitated by action of osmom- 



eter, 181 

 in mycelia, 301 

 measurement of force of in tissues, 



182 



nature of, 179, 180 

 Turnips, 105 



Twining plants, lateral geotropism of, 85 

 movements of, 85, 86 



Utricularia, buds of, 321 



Vaucheria, influence of external condi- 

 tions on, 327 



Vallisneria, carpotropic movements of, 

 307 



Verworn, apparatus for testing electro- 

 taxis, 1 08 



on inductorium, 104 

 on non-polarizable electrodes, 102 

 text-book on physiology, 157 

 Vicia faba, chemical changes in geotrop- 



ically stimulated root, 80 

 sensitiveness to light, 132 

 Vines, on enzymes of Nepenthes, 272 



on leptonin, 275 

 Viola obliqua, etiolation of, Tl6, 117 



rostrata, etiolation of, 116, 117, Il8 

 Violet, growth of, 285, 286 

 Vitis, reactions of tendrils of, 22 

 Vochting, on alteration in geotropic 



properties, 87 

 on formative influence of gravity, 88 



of light, 114, 145, 146 

 investigations on tubers, 318, 324, 



325 



on movements of branches, 84 

 on polarity, 303 

 on regeneration, 310 

 Voorhees, see Osborne 



Waller, on influence of illumination 

 upon differences in electric potential, 

 103 



Ward, on ascent of sap, 216 

 Water, proportion in plants, 65, 66 



relations of to plants, 65, 66 

 Water cultures, 223, 224, 225, 226 

 Weber's law, in chemotaxis, 59 



in phototropism, 134 

 Weiss, translation of plant physiology, 38 

 Went, investigations on sugar cane, 227 

 Westermaier, on mechanism of ascent of 



sap, 215, 216 

 Willow, galls of, 64 



polarity in, 88 

 Wheat, growth in oxygen, 45 



endurance of desiccation, 66 



resistance to high temperatures, 93 

 Wiesner, photometric researches, 132 

 Wieler, on bleeding, 185, 188 

 Wiley, on composition of maize, 1 67 



on determination of tannins, 152 



on principles and practice of agri- 

 cultural analysis, 159, 167 

 Willow, propagation of, 319 



See Salix 

 Wilson, on cell- division, 278 



on functions of cell, 222 



on influence of chemicals on cyto- 

 plasmic c'eavage, 64 



on structure of protoplasm, 220 

 Wilting, 211 



