INDEX 
627 
Cupules, 216 
Currants, 301 
Cuscuta, 339, 340, 341 
Cushion, 166 
Cuticle, 35 
Cycadaceae, 83, 331 
Cycadeoidea dacotensis, 600, 601, 
602, 604 
Dartoni, 605 
Wielandi, 603, 604 
Cycadocephalus Sewardi, 600 
Cycadofilicales, 592, 598, 612, 613 
Cycads, 390 
Cycas, 83, 411, 431, 447 
circinalis, 391, 401 
media, 395, 397, 398, 408 
revoluta, 390, 391, 394> 396, 
402 
Cycle, organic, 70 
Cypripedium, 498 
Cyrtomium falcatum, 22, 155 
Cystopteris bulbifera, 164 
Cystopus candidus, 292 
Cytase, 100 
Cytoplasm, 16 
D 
Dandelion, 116, 486 
Daisy, white, 486 
Darwin, Charles, 511 
Darwinism, 510 
De Candolle, A. P., 92 
Decay, 322 
Determiner, 558 
Dewar flask, 106 
Dextrinase, 79 
Diastase, 86, 100, 102 
Dicotyledons, 453, 456 
Dictyota, 356, 364 
Differentiation, dorso-ventral, 168 
Diffusion, 55 
of gases, 55 
Diffusion of liquids, 55 
Digestion. 85 
Dionaea muscipula, 86, 88 
Dioon, 411 
edule, 403 
Diplazium zelanicum, 154 
Disease carriers, 310 
Diseases caused by Phycomycetes, 
291 
Diseases, contagious and infectious, 
309 
Dissimilation, 90 
Dodder, 339, 340, 341 
Dog's-tooth violet, 434, 439 
Dominance, 554 
law of, 553 
Doubling, 464 
Drosera, 347, 88 
intermedia, 87, 88 
rotundifolia, 348 
Drynaria meyeniana, 151, 164 
Ecology, 4 
Ectotrophic micorhizas, 336 
Eel-grass, 348, 349 
Egg-cell, 170 
Egg, fertilized, nature of, 172 
development of, 1 73 
Eichornia crassipes, Solms 51, 52 
Elaters, 219, 373 
Elephants, 514 
Elm, 414 
Elymus virginicus, 293 
Embryo, 174 
growth of, 174 
Embryogeny, 608 
Embryology, 4 
Enation, 574 
Encephalartos, 411 
Endosmosis, 58 
Endosperm, 400, 430 
