INDEX 



393 



Heterozygote, 98. 

 Heterozygous, 90. 

 Homozygote, 98. 

 Homozygous, 90. 

 Hormones, 252. 

 Horse, ancestor of, 13. 



Clydesdale, 136. 



Prevalski's, 134. 



Shire, 136. 



unit-characters of, 134. 

 Hoshino, 200. 



Human crosses, English-Polynesian, 268. 

 Boer-Hottentot, 269. 

 Jew-Anglo Saxon, 274. 

 Negro-white, 271. 

 Huxley, 12. 

 Hybrid, 79, 83. 

 Hydatina, 254. 



Illiteracy, 290. 



Immigration, 290. 



Inbreeding, 222, 223, 224, 227, 230. 



Insanity, 280. 



Instinct, 41. 



Intense pigmentation, 127. 



Jennings, 209, 240. 

 Joharnsen, 94, 208, 247. 

 Jones, 244. 

 Jungle fowl, 145. 



Kammerer, 29, 37. 



Kellogg, 33. 



King, 129, 222, 231, 238, 256. 



Knight, 86. 



Kblreuter, 83. 



Lamarck, 17, 18, 47. 

 Leaves, forms of, 152. 

 Light effects, 38. 

 Lillie, 252. 

 Linkage, 120, 167, 180. 



chromosome theory of, 168. 



measurement of, 172. 

 Little, 111, 125, 139, 179. 

 Lizard, 37. 

 Uwk, 12, 83. 

 Loeb, 43, 256. 



Lychnis, 262. 

 Lyell, 8. 



MacDowell, 224. 



Macrogamete, 253. 



Maize, 151, 174, 194, 211, 223, 228. 



Malthus, 15. 



Marriage of near-of-kin, 227. 



McCIung, 260. 



Mean, 64. 



Mendel, 82, 190, 248. 



Mendel's law, 55, 82, 88. 



Mendelian expectations, 104. 



ratios, modified, 109, 116, 119. 

 Mental ability, inheritance of, 279. 

 Miastor, 51. 

 Microgamete, 254. 

 Microtus, 124. 

 Miller, 139. 



Mirabilis,86, 110,206. 

 Mode, 59. 

 Mongrel, 83. 



Morgan, 52, 120, 249, 251. 

 Morphology, 13. 

 Moth, brown-tail, 43. 

 Mulatto, 277. 

 Mule- footed swine, 138. 

 Multiple allelomorphs, 187, 219. 

 Multiple factor hj^jothesis, 192. 

 Mus alexandrinus, 1 25 , . 



rattus, 124, 

 Mutants of Oenothera, 76^ 

 Mutation, 11, 71, 182, 185, 189. 



varieties of, 208. 

 Mutilations, 28. 



Nabours, 176. 



Natural selection, 11, 17, 56. 



Naudin 87. 



Negro, white-spotted, 277. 



Nicotiana, 85, 229, 236, 242. 



Nilsson-Ehle, 193. 



Oenothera, 49, 75, 221. 

 Origin of Species, 11, 17. 

 Osborn, 8, 19, 266. 



Ovarian transplantation in fowls, 251. 

 in guinea-pigs, 24. 



