534. 



INDEX 



will it endure, 407, 408, 412, 

 413, 502 

 Classes, hereditary, 428-430 



exclusive, 430-431 

 Cleavage, of egg, 22-30 



AXD DIFFERENTIATION, 116- 



132 



differential, 128, 129 

 non-differential, 128 

 significance of, 128, 129, 132 



Cleavage cells, differentiation 

 of, 3C 

 isolated, development of, 

 322-330 

 Clepsine, behavior of, 74 

 Coeducation, 445-446 

 Cold, induction effect on Daph- 

 nia, 358 

 induction effect on mice, 358 

 Coloboma, 206, 304 

 Color, of skin, hair, eves, 202, 



301, 297 

 Color-blindedness, 281-285 

 Consciousness, 78-81 

 continuity of, 79 

 loss of, 80, 81 

 subconscious, 78 

 Control of, alternatives, 482 

 heredity and development, 

 5, 375 



HUMAST EVOLUTION", 416 



meaning of, 477 

 nature, 6 



phenomena, 375, 477 

 self, 477 

 Correlations of germ and 



soma, 168-185 

 "Correlative differentiation," 



339, 340 

 Correns, rediscovery of "Men- 

 del's Law," 230 

 on Mirabilis, 237, 238 256, 



271 

 leaf colors, 295 

 'Jreationism, 44 



Creative Synthesis, 40, 89, 187 

 Crepidula, maturation and fer- 

 tilization, 112, 113 



individuality of germ nuc- 

 lei, 122 



exogastrula of, 332 

 Cretin, 305, 339 

 Criminality, 303, 461 

 Ctenophore, egg, 182 

 Cultivated plants, 375 



number of species, 375 

 Culture, grades of, 408 

 Cuvier, 489 

 Cyclopia, 333 

 Cytoplasmic Correlations, 174 



differentiations, 188 



inheritance, 176-185 



localization, 129 



movements, 123 



Daltonism, sex-linked, 282, 283 

 Daphnia, effect of cold on, 358 

 Darbyshire, 509 

 Darwin, hypothesis of pangen- 

 esis, 98 

 on domestic pigeons, 376, 



377, 878 

 inheritance of acquired 



characters, 343 

 prepotency, 229 

 reversion, 229 

 "sports," 216 

 zeal, 488 



organism a microcosm, 194 

 theory of Natural Selec- 

 tion, 385 

 Daughter nuclei, 28, 119 

 Davenport, degrees of relation- 

 ship, 223 

 extra toe in fowls, 274 

 inheritance of skin color, 



289-291 

 Mendelian inheritance in 



man. 299 

 transplanted ovaries, 350 



