INDEX 
Brachychiton diversifolium, 523 
Bracken fern, 149, 155 
Bracts, petal ody of, 462 
Brake, 149, 155 
Branches, sterile and fertile, 196 
archegonial, 197 
innovation, 199 
Brassica alba, 132, 133 
nigra, 464 
oleracea, 530, 569 
Breathing, respiration versus, 107 
Breeding of resistant varieties, 313 
Bromeliads, 327 
Brood-buds, 216 
Broom-rape family, 338 
Brown, Robert, 16 
Brussels sprouts, 464 
Bryales, 193 
Bryophyllum, 347 
crenatum, 349 
Bryophytes, 366 
Bryopteris filicina, 217 
Budding, 98 
Bud-scales, 30 
Bulbils, 163 
Bundles, fibro-vascular, 36, 61 
structure of, 65, 66 
Burdock, 116, 486 
Burroughs, John, 434 
Butter, June, 316 
Butter-and-eggs, 481, 482, 483-485 
Buttercup, 462 
Cabbage, 464 
Caesalpinioideae, 468 
Calamites, 368, 388, 612 
Calamus, 495 
Calla-lily, soft rot of, 309 
Calla palustris, 136 
Calorimeter, 106 
40 
Calyptra, 200 
Cambium, 67 
interfascicular, 67 
Camptosorus rhizophyllus, 162, 164 
Canada thistle, 486 
Cancer-root, 338 
Cannel coal, 426 
Capsicum, 481 
Carbohydrates, 71 
seat of elaboration of, 72 
Carbon cycle, no, HI 
Carica Papaya, 358 
Carpels, 436, 461 
Carya ovata, 336 
Caryopsis, 493 
Cassia marilandica, 467, 468 
Castanea dentata, 294, 296 
Castor-oil seed. 123 
plant, 63, 66 
Catnip, 479 
Cat- tails, 490, 491, 492 
Cattleya, 329, 500, 501 
Cecropia, 325 
Cell, 15, 16, 17, 18 
Cell-division and reproduction, 344 
Cell-sap, 17 
Cell-theory, 15, 20 
Celtis occidentalis, 292 
Ceratozamia, 333, 411 
Cercis, 468 
Chaff, 495 
Character-units versus unit-char- 
acters, 558 
Characters, inheritance of acquired, 
506-509, 565 
Cheese, 316 
Cherries, black knot of, 295 
Chestnut, 294 
American, 296 
bark disease, 295 
blight, 294 
Chicory, 486, 487 
