266 



INDEX 



CASTLE, 4, 59, 124, 141, 163, 160, 170, 

 171, 183, 202-205, 210, 222, 241. 

 Castration, 210. 

 Cats, albino, 59. 



tailless, 68. 

 Cattle, birth-rate of, 201. 



hairless, 68. 



hornless, 129. 



roan, 176. 



tailless, 68. 

 Celandine, 63. 

 Cell, germ, 21. 



polar, 23. 



resting, 18. 



'theory, 14. 



typical, 15. 



wall, 16. 

 Centrosome, 17. 

 Cerebral hernia, 69. 

 CHAPIN, 261. 

 Characters, congenital, 80. 



moral and mental, 230. 



unit, 61. 



CHAtiviN, MARIE VON, 90. 

 Cheerful disposition, 232. 

 Chelidonium, 63, 71. 

 Chromatfn, 16. 

 Chromosomes, 16. 



extra, 207. 



"x," 207. 



"y," 209. 



Chromosome theory, 29. 

 Chrysanthemum, 50. 

 Circumcision, 87. 

 Cirripede, 212. 

 Clover, four-leaved, 39. 

 COBB, 173, 183. 

 Cochins, 182. 

 Cocoon, yellow, 129. 

 Colorado potato-beetle (see Lep- 



tinotarsa) . 

 Color-blindness, 214. 



factor, 170. 

 Comb characters, 69. 

 Complementary factor, 159. 

 Compound determiners, 159. 

 Congenital characters, 80. 

 CONKLIN, 29, 88. 



Consanguineous marriage, 238, 239. 

 Constants, 44. 



Continuity of germplasm, 11. 

 Convergent variation, 150. 

 COKRENS, 124, 129, 133, 175, 205, 



222. 



Cotton, 129. 



Cousin marriage, 234, 238, 242, 243. 

 Crabs, 212. 

 Crested head, 69, 129. 

 Cretinism, 253. 

 CUENOT, 164, 170, 171, 200. 

 Cumulative factor, 159, 187. 

 Curly hair, 137. 

 Currant-worm, 216. 

 Cytoplasm, 15. 



Daisy, 50. 

 Daphnids, 53, 204. 

 DARBISHIRE, 128, 177. 

 DARWIN, 1, 23, 39, 40, 42, 52, 55, 

 56, 61, 67, 73, 77, 85, 86, 114, 

 118, 123, 124, 151, 204, 225, 

 240, 251. 

 Datura, 180. 



DAVENPORT, 46, 59, 68, 124, 129, 

 148, 152, 173, 177, 178, 179, 

 181, 182, 231, 233, 235, 237, 

 245, 248, 250, 253. 

 Deafness, 233. 

 Death, 7. 



preventable, 258. 

 Defects, hereditary, 232. 

 Delayed dominance, 177. 

 Department of Agriculture, 250. 

 Dermal spines, 151. 

 Determiners of heredity, 28. 

 Deviation, average, 45. 



standard, 46. 

 Dihybrids, 133. 

 Dinosaurs, 71. 

 Diluting factor, 165, 171. 

 Dioecious plants, 220. 

 Disease transmission, 92. 

 Docked tails, 88. 

 Dogs, hairless, 68. 



tailless, 68. 



trimmed ears of, 88. 

 Dominance, 145, 174. 



delayed, 177. 



imperfect, 175. 



reversed, 178. 



