6l2 



EVOLUTION, GENETICS, AND EUGENICS 



Blastoderm, 117 



Blastula, 117 



Blends, in heredity, 255-57 



Blood-precipitation tests, evidences 



from, 52, 100-104 

 Bonnet, R., 16 

 Bonnevie, K., 481 

 Bos tauriis, 301 

 Boveri, T., 201, 203 

 Boyd-Dawkins, 90 

 Brachydactylism, inheritance of, 251- 



52, 450-52 

 Breeding, experimental, 184 

 Bridges, C. B., 226, 253, 2S5, 290, 295, 



327, 334 

 Brontotherium, 427-28 



Briinn, 40, 41 



Buffon, G. L. L., 7, 15-17 



Bullen, G. E., 373 



Cameline: forefoot, 138; skull, evolu- 

 tion of, 137 



Camels, fossil pedigree of, 136-38 



Cape de Verde Islands, fauna of, 169 



Car ex, 331 



Carsinas maetias, 394-95 



Castle, W. E., 39, 40, 41, 43, 251, 270, 

 305, 308-9, 399. 411-12 



Cataract, inheritance of, 452-53 



Catastrophism, 22-23 



Cattle hybrids, 301 



Cave animals, eyes of, 73-74 



Cebidae, 102 



Cell: diagram of typical, 192; division, 

 indirect or mitotic, 194-96 



Cenogenetic, 115 



Central body, 193 



Centrosome, 193 



Cephalization, 348 



Cesnola, 395 



Cetacea, 120, 



Chamberlin, T. C, 49 



Chambers, R., 23, 26 



Change factors in evolution, 187, 308-12 



Child, C. M., 352, 415 



Child mortality in long-lived families, 



585 2. 



Chimpanzee, 151 



Chromatin, 191, 193; interchange be- 

 tween homologous chromosomes, 



288, 568 



Chromosomal aberrations, 187 



Chromosomes, 191-93; conjugation _ of 

 pairs of, 204; in heredity, 207-8; in- 

 dependent distribution of, 568-69; 

 maps to show loci of genes, 291-95; 

 number and appearance, 193; reduc- 

 tion of, 204-5, 567. 572; and sex in 

 Drosophila, 221 ff. 



Clark, J. M., 147 



Classification: basis of, 93-94; evi- 

 dences from, 52, 93-95; international 

 code of, 93 



Clausen, R. E., 96-97, 222, 561-72 



Cleavage of egg, 115 



Cocoa-nut crab, 67-68, 70 



Coefficient of correlation, 559-60 



Color blindness, heredity of, 277 



Color in animals, 360-66 



Coluber anthonyi, 93 



Colubridae, 93 



Colubrinae, 93 



Commensalism, as adaptation, 357-58 



Communal life, as adaptation, 358-59 



Comparative anatomy, evidences from, 

 52, 58-92 



Conklin, E. G., 280-81, 408-14 47 1, 

 472, 473-74 



Conjugation, of homologous chromo- 

 somes, 567 



Convergence, Osborn's law of, 366-69 



Cope, E. D., 39 



Correlation: coefficient of, 559"6o; 

 tables, 561 



Correns, C, 40, 43, 232, 245-47, 255-56, 

 264 



Cossonidae, 171 

 Coulter, J. M., 238-44, 253-68 

 Coulter, M. C, 238-44, 253-68 

 Crampe, H., 205 

 Crampton, II. E., 5, 32, 434 

 Crataegus, 4, 332 

 Crime, and destiny, 484-85 

 Crisscross inheritance, 2S2 

 Cross-breeding, 299-304 

 Crossing-over, in Mendelian heredity, 

 288-90 



Cuenot, L., 250 



Cumulative factors, 264 ff., 276 

 Cuvier, G., 19, 21-22 

 Cytogenic reproduction, 198-200 



