INDEX 



433 



Cystolith, 134, 135 



Cytoblast, 8 



Cytoblastema, 8, 143 



Cytokinesis, 186 ff. 



by cell plate, 176, 190 

 by furrowing, 186 



Cytolysis, 285, 286 



Cytomorphosis, 117 



Cytoplasm, 25, 40 



in fertilization, 280, 294, 299 

 in heredity, 326, 328, 330 

 pattern in ovum, 329 

 reducing action, 123 



Czapek, 44 



Dahlgren, 225 

 Dahlia (angiosperm), 256 

 Dale, 290, 312 



Dangeard, 84, 85, 86, 122, 202, 290, 291 

 Daphnia (copepod), 371 

 Darling, 159, 356 

 Darwin, 16, 49, 398, 402 

 Datura (angiosperm), 134 

 Davey and Gibson, 372 

 Davis, B. M., blepharoplast, 85 

 centrospheres, 80, 82 

 .cytokinesis, 187 

 fertilization, 289, 290 

 (Enothera mutants, 344, 345 

 plastid, 113, 114 

 reduction, 241 

 Davis, H. S., 239 

 Death, 136, 138 

 Debaisieux, 237 

 Dedifferentiation, 137 

 Degeneration, 211 ff., 259 

 Dehorne, 150, 159 

 Delage, 63 



and Goldsmith, 400 

 Delia Valle, 163 

 Dellinger, 45 

 Dendrite, 30 

 Denke, 195 



Derbesia (green alga), 85, 86 

 Dermatosome, 193 

 Dermocarpa (blue-green alga), 204 

 Derschau, 66, 123, 136 

 Des Cilleuls, 212 

 Desmid, 105, 186, 222 

 Determinant, 226, 400 ff. 

 Deton, 237 

 28 



Deutoplasm, 134 



Development (Ontogenesis), 323, 324, 



335, 410 



chemical control of, 412 

 non-factorial theory of, 411 

 Weismann's theory of, 401, 407 

 Developmental mechanics, 411 

 Devise, 182 

 Dextrin, 107 

 Diakinesis, 231, 232, 233 

 Dicrocodium (flatworm), 245 

 Dictyota (brown alga), cell wall, 186 

 centrosome, 79, 80, 82 

 reduction, 223 

 Didiploid nuclei, 260 

 Didymium (slime mold), 187 

 Dietel, 224 

 Differentiation of cells, 26, 137 



products, 133 ff. 

 Digametic condition, 358 ff. 

 Digby, extruded chromatin, 136 

 nucleolus, 65 

 prochromosomes, 159 

 reduction, 239, 240, 248 

 somatic chromosomes, 149, 152 

 Dinophilus (annelid worm), 357, 368 

 Dioncea (angiosperm), 47 

 Dioon (cycad), 62, 93, 94, 294 

 Diplotene, 231, 233 

 Diptera, 256 

 Dispermy, 163, 326 

 Dissostcira (grasshopper), 119 

 Dixon, 211 

 Dobell, 67 

 Dodge, 223 

 Dog, 361 



Dominance, 337, 339 

 Doncaster, ix, 319, 363 

 Double fertilization, 14, 298, 299, 302 

 Double heterotypic spireme, 241-243 

 Double reduction, 223, 224, 291 

 Douin, 355, 364 

 Downing, 275 



Draparnaldia (green alga), 104, 108 

 Driesch, 328, 412 



and Morgan, 328 



Drosera (angiosperm) 159, 236, 251, 252 

 Drosophila (fruit fly), chromosome com- 

 plement, 360, 383 

 map, 388, 389 

 crossing over, 387 ff. 

 intersexes, 371, 376 

 linkage, 379 



