798 



1 iN D E X 



Asexual reproduction, 545, 549, 617, 647 



Aspergillus, 548, 550 



Aspletjium, 657 



Assimilation, 109, 147, 176 



Associations, climax, 754 



Atoms, 95, 98 



Autophytes, 506, 511, 516 



Autumnal aspect, 27; coloration, 27 



Auxin, 175, 212, 305 



Auxospore, 627 



Avocado, 382 



Azolla, 624, 667 



Azotobacter, 537 



Bacillariophyceae, 608, 625-627 



Bacteria, 5, 8, 515-530, 531-540, 596, 602; 

 acetic acid, 156; aerobic, 537; am- 

 monifying, 532; anaerobic, 537; and 

 sanitation, 523; and sugar synthesis, 

 113; biology of, 515; characteristics of, 

 520; control of, 529; denitrifying, 534; 

 factors affecting, 517-520; green sulfur, 

 517; iron, 512, 539, 724; lactic acid, 

 156; multiplication of, 521; nitrifying, 

 512, 532; nitrogen-fixing, 191, 535, 

 536; of fireblight, 8, 568; of soil (see 

 Soil); pathogenic, 524; purple, 113; re- 

 production in, 521; size of, 521, 522; 

 sulfur, 512, 538; types of, 516 



Bacteriology, 525, 529 



Bacteriophage, 521, 522 



Bamboo, 271, 272, 404, 762 



Banana, 701; family, 699 



Banyan tree, 299 



Barberry, 560-561. 567 



Bark, 262 



Basidia, 555, 560 



Basidiomycetes, 556 



Basidiospore. 555, 561 



Bateson, 488 



Bairachosperimnn , 637 



Bays, 598 



Beach grass, 404; leaf, 91 



Beal, 397 



Bean, 10; development of, 11, 12. 54 



Beech, 756; family, 704 



Bennetittales. 730 



Bent grass, 43 



Bermuda grass. 44 



Berry. 363. 365 



Betulaceac, 704 



Biennials, 33, 46 



Bindweed, 413 



Biologist, 7 



Biology, 5 



Birch family, 704 



Bisexual, 671 



Blade, leaf, 13, 14, 76 



Blasia, 645 



Blight, 574; chestnut, 704; fire, 568, 582; 

 potato, 553 



Blotches, 573 



Bluegrass, 40, 43; leaf, 91 



Bluestem, little, 765; tall, 764 



Bogs, 597, 650 



Bordeaux mixture, 578 



Boron, 329 



Botany, 2, 7 



Botrychium, 665 



Botrydium, 628 



Boussingault, 531 



Brassicaceae, 706 



Bread mold, 543 



Breathing, 151 



Bromeliaceae, 300. 699 



Broom-rape, 506 



Brownian mcjvement. 199 



Brown-rot, 578, 579 



Bryales, 649 



Bryophyllum, 402: leaf, 421 



Bryophytes, 638-654 



Budding, 292, 546 



Buds, 24, 36, 247; accessory, 247: ad- 

 ventitious, 250; axillary, 13; branch, 

 248; composition of, 248; develop- 

 ment of, 246; flower, 248, 335; fruit, 

 248; latent, 250; lateral, 246, 247, 249; 

 leaf, 246, 248; of potatoes, 409; repro- 

 ductive, 246; scale scars of, 246; scales 

 of, 24, 246, 248; terminal, 10, 13, 69, 

 246. 247, 249; vegetative, 246, 248, 335 

 Buffalo grass, 695. 767 

 Bulblets. 258 

 Bulbs. 257, 410 

 Bull, Ephraim, 434 



Bundle scar, 246; sheath, 71. 72; vascu- 

 lar. 13, 71, 72, 265, 266. 271 

 Bunt, 558 

 Burrill, 567, 

 Button bush flowers. 715 



