276 



Plant Tissue Culture 



Tradescantia, 20, 28 



transfer room, 74—76 



transplantation, 7, 8, 15, 30, 219 



traumatin, 114 



trays, enamel and galvanized, 72 



trees, cambium, cultivation of, 



49 

 trees, cambium, cultures of, 127, 



213 

 trees, cambium, excision of, 121- 



123 

 trichomes, loss of meristematic 



function in, 44 

 Trifolium repens, 55 

 Triticum, 28 

 Triturus torosus, 257 

 tropic response, auxin as factor 



in, 212 

 tropisms, 192 

 Tukey, 45, 58, 73, 125, 220, 233, 



235, 251 

 tumefacient property of cells, 



221 

 tumor metabolism, 184 

 tumors, 221 

 Tyrode, 90, 239 

 Tyrode's solution, 90 

 tyrosinase, 193, 205 

 tyrosine, 194, 205 



U 



tlehla, 28, 44, 101, 235 



Vlmus campestris, 248 



ultraviolet light, use as steriliz- 

 ing agent, 118 



undifferentiated tissues, cultiva- 

 tion of, 34, 133 



ungcrminated embryos as cul- 

 ture material, 46-48 



uniformity of cultures, 133 



Urtica, 20 



"Uspulin," as disinfectant, 119 



vaccines, cultivation of, 184 

 van Tiegham cell, 81, 149 

 variability, 133 et seq. 

 vascular strands, disorganized, 

 216 



vascular strands, organization 

 of in culture, 190 



vascular tissue, importance for 

 regeneration, 19 



vaseline for sealing slide cul- 

 tures, 151, 152 



Vicia faba, 250, 252, 255 



Viola, 28 



Virchow, 5, 259 



virus molecules, determination 

 of shape, 79 



viruses, cultivation of, 120, 199, 

 200 



Viscum, 202 



vitamin B ly 96, 105 (see thia- 

 min) 



vitamin B a , 98, 105, 108, 172 (see 

 pyridoxine) 



vitamins, 93, 96, 99 



vitreous sink, 69 



Vbchting, 5, 7, 8, 30, 217, 251 



Vogelaar and Erlichman, 22, 71, 

 90, 239, 244, 261 



Vogt, 218, 230, 259 



W 

 wall color, 75 

 Warburg, 184, 189, 247; W. and 



Kubowitz, 184, 247 

 Ward; Rivers and W., 184, 259 

 washing of air, 75 

 washing glassware, 71, 72 

 watch glasses, Maximow, 81 

 water, distillation of, 70, 92 

 water, filtration, 92 

 water, purity, 70, 91, 92 

 water softener, 70, 92 

 Wehnelt, 57, 125, 126, 244 

 weight vs. length (as measure of 



growth), 159 

 Weiss, 259 

 Went, 210, 211, 212, 219, 220, 



255; Bouillenne, R., and W., 



210, 248; Thimann and W., 



210, 244 

 Werckmeister, 45, 234 

 Westinghouse immersion heater, 



83 

 wheat roots, 105 

 white clover, root cap, 61 



