SUBJECT INDEX 



Page numbers in italics refer to extended or systematic treatment of 



the subject. 



Absidia ramosa, 105 



Absorption spectrum of auxin, 109 



of carotene, 170 

 Acalypha, 185-189, 202, 223 

 Acetabularia, 240, 241 

 Acid curvatures, 37, 130, 131, 181 

 AE (Avena Einheit), 41, 43 

 Aesculus, 61, 62 

 Agar, 12, 13, 34-36 

 Age of coleoptile for auxin test, 39, 



40 

 Ageotropic, 163 

 Aging, 75-77 

 Agrimonia, 219 

 Alaska peas, 54, 198 

 Amino acids, 19, 20, 40, 72, 112, 



196 

 Animal hormones, 232-235 

 Animals, auxin in, 70-71 

 Antirrhinum, 211 

 Aphids, 227 

 Apical dominance, 216 

 Arachis oil, 116 

 Aristolochia, 227 

 Asparagus, 60, 231 

 Aspergillus, 112, 113, 236, 238 

 Aster, 212 



Autotropism, 86, 178 

 Auxanometer, 52 

 Auxenolonic acid, see Auxin h 

 Auxentriolic acid, see Auxin a 

 Auxin, definition, 4 

 Auxin a and h 



chemistry, 106-110, 113, 114 



esters of, 65, 116, 117 



physiological activity, 42, 65, 

 142, 146, 175, 190, 195, 210, 

 220, 224 

 Auxin-glutaric acid, 109 

 Avena, 4, 10, 21-53, 58, 61, 63, 64, 

 73, 82, 84, 88, 113, 142-149, 156- 

 172, 203 

 Avena test, 13, 21, 27-51 

 Axillary buds, 60, 207-216 



Bacteria, 71, 106, 112, 113, 116, 148, 



187, 225, 226 

 Bacterium tumefaciens, 187, 225 

 Bambusa, 232 

 Bios, 4, 196, 215, 236-238 

 Biotin, 196, 197, 215, 236, 237 

 Blaauw effect, 174 

 Blastanin, 63 



Bound auxin, 68, 131, 132, 160 

 Bryophyllum, 18, 158, 184, 212 

 Bud formation, 92 

 Bud growth, 18, 207-216 

 Bud growth substances, 215, 216 

 Bud inhibition, 3, 19, 56, 184, 207-216 



Calibrating plants, 51 



Callus, 6, 216, 222-227 



Cambial growth, 3, 97, 218-222 



Cancer, see Carcinoma 



Capacity of auxin transport, 95-97, 



102, 103 

 Carbon-nitrogen ratio, 9, 183 

 Carcinogenic substances, 235 

 Carcinoma, 70, 71, 235 

 Cardamine, 58 

 Carotene, 170, 198 

 Cecidomyia Poae, 8 

 Cecidomyidae, 248 

 Cell division, 17, 18, 22, 217, 218, 221, 



223, 224 

 Cell elongation, 2, 4, 22, 119-127 

 Cell enlargement, 223, 224, 228, 229 

 Cellulose, 124-127 

 Cell wall, 119-127 

 Center of attraction, 215 

 Cephalaria, 36, 38, 58, 68 

 Chemotropism, 181 

 Chloroform extraction, 58, 67, 68, 



128, 145, 146, 160, 163 

 Cholodny-Went theory, 154-17 ^ 

 Chromatophore activator, 71 

 Chrysanthemum, 204 

 Cichorium, 187 

 Cinnamonum, 193 



289 



