682 



SUBJECT INDEX 



Anatomy of leaves, 157-158 

 Anatomy of roots, 269-273, 482- 



486 

 Anatomy of stems, 217-229, 482- 



486 

 Anions, 12 



in the soil solution, 249 

 Annual rings, 220 

 Anode, 1 1 



Antagonism, 125, 416-417 

 Anthocyanins, 382-385 

 Anthoxanthins, 385 

 Anti-enzymes, 476 

 Apical dominance, 621-623, 638 

 Apposition, 556 

 A.rabans, 375 

 Arabinose, 371-372 

 Arginine, 449 

 Ascent of sap, see movement of water 



Ash, 319, 401 

 Asparagine, 72, 448-449 

 Aspartic acid, 442, 448 

 Assimilation, 451-452, 549-550, 554, 



556, 558 

 Assimilation, carbon, see photosynthe- 

 sis 

 Atmometers, 161 

 Atmospheric pressure, effect of, 



on movement of water, 229 



on transpiration, 202 

 Auxenolonic acid, 577 

 Auxentriolic acid, 577 

 Auxins, 572, 573, 577, 581 



oat coleoptile test for, 574-576 



occurrence of, 576 



role in abscission, 651 



role in apical dominance, 621-622 



role in cambial activity, 647-648 



role in cell elongation, 556, 579- 



. 58_i 

 role in geotropism, 661-662 

 role in phototropism, 656-657, 



659-660 

 role in root formation, 581-582 

 synthesis of, 576-577 

 translocation of, 577'579 

 Avogadro's hypothesis, lOi 



Bacteria, soil, 250-251, 454-457 



Base exchange, 404-406 



Bases, 13 



Biotic factors, 588 



Blackman reaction, 329, 330 



Bleeding, 1 71-172, 232 



Boron, role of, 424, 554 



Boyle's law, lOi 



Branch gap, 559 



Bromelin, 471 



Brownian movement, 42-43 



Buds, 562 



dormancy of, 637-638 

 Buffer action, 18-20, 80-81, 146 



Calcium oxalate, 79, 421 



Calcium, role of, 421-422, 554 



Calines, 583 



Callose, 69, 485 



Callus, 485 



Cambium, 217-220, 224, 270-272, 



482, 484, 559-562, 647-648 

 Cannizzaro reaction, 543, 544 

 Capillarity, 



and movement of water in plants, 



229 

 and movement of water in soils, 

 251-252, 253-255, 275-276 

 Carbohydrases, 468-471 

 Carbohydrates, 



classification of, 367-368 

 oxidation of, 409, 509, 517-5 18, 



537-538, 540 

 relation to nitrogen metabolism, 



450-453 

 role in growth, 450-453, 554, 556, 



558 

 storage of, 570 



Carbohvdrates, compound, 369, 379- 

 381 



Carbohj'drate-nitrogen ratio, 450-453 



Carbon assimilation, see photosynthe- 

 sis 



Carbon cycle, 341-347 



Carbon dioxide concentration, effect 

 on respiration, 523-525 



