294 



SUBJECT INDEX 



Supramaximal angle, 47 

 Swelling of roots, 147-149 

 Swelling of stems, 6, 56, 81, 210, 213, 

 218, 222-227, 228 



Tannic acid, 45 



Taraxacum, 161 



Taxus, 204 



Temperature, 28, 60, 246 



Temperature coefficient, 95, 164 



Tendril, 227 



Teratology, 222 



Terminal bud, 60-62, 207-209 



Theelin, 109, 198, 233-235 



Theelol, 109 



Threshold, 56, 161, 244, 246 



Tissue cultures, 71 



Tissue tension, 54 



Tobacco, see Nicotiana 



Tomato, 181, 191 



Toxic compounds, 40, 44, 45, 55, 143, 



189 

 Tradescantia, 60, 181, 191, 211, 232 

 Transmission of irritation or stimulus, 



10, 11, 19, 92, 94, 97, 101, 152, 153 

 Transpiration stream, 91, 97, 99 

 Transplant, 9 

 Transport of hormone, 90-104, 136, 



146, 147, 171, 172, 186, 190, 209 

 Transverse polarization, 157, 163 

 Traumatotropism, 153, 178-179 

 Tropaeolum, 211 



Tropisms, 2, 3, 9, 16, 151-182, 230 

 Tropohormones, 13, 153 

 Tryptamine, 45, 115, 116 

 Tryptophane, 20, 72, 111, 112, 115, 



116, 196 

 Tube structure, 125, 126 

 Tussilago, 123 



u (unpublished), 1, 36, 40, 45-47, 49, 

 55, 59, 67, 70-72, 75, 80, 81, 87, 90, 

 91, 97, 100, 115, 116, 132, 135, 144, 

 148, 170, 175, 176, 189, 192, 194- 

 199, 217, 223-225, 227, 232, 238 



Ultra-violet light, 88, 110 



Urine, 70, 71, 106, 107, 110, 111, 117, 



191, 195,211,220,223,228 

 Utrecht, 49 



Vallisneria, 19 



Valonia, 57 



Variability of test, 38, 39, 49-51, 

 101 



Vascular bundle, 90, 91 



Veins, 66, 69, 91, 100, 227 



Velocity of auxin transport, 94-96, 

 101-103, 147, 177, 221 



Vicia Faba, 61, 62, 88, 89, 97, 113, 

 141, 143-147, 149, 150, 160, 164, 

 165, 173, 181, 191, 203, 209-211, 

 217, 218, 220, 223, 224, 231 



Virus, 69, 227, 248 



Viscosity of protoplasm, 130 



Vitamin B, 236 



Vitis, 185 



WAE (Wuchsstoff-Avena-Einheit), 



42,43 

 Wheat germ oil, 63 

 Wiry tomato, 227 

 Wound hormone, 18, 153, 178 

 Wound substances, 24, 42 

 Wuchsstoff, 4, 234 

 Wuchsstoff B, 113, 236 

 Wuchsstoff Einheit, 42 



X-ray photography, 125, 126 

 X-rays, 88 



Yeast, 72, 106, 111-113, 143, 150, 196, 

 199, 228, 236-238 



Zea Mays, 24, 58, 62, 63, 75, 81-83, 

 86, 87, 113, 141, 143-147, 154, 158, 

 162, 163, 165, 203, 211 



Zinc trough, 30 



Zinnia, 211 



Zones, growth of, 51, 76, 77, 80, 81 



Zoology, 11, 151 



