244 



HORMONES AND HEREDITY 



Drosophila, blind mutation, 189 ; 

 heredity of sex, 61, 112; muta- 

 tions, 175, 



Ducks, crosses of, 186. 



Dutch rabbit, 173. 



Earthworms, sex in, 64. 



Eclipse plumage, 82. 



Eigenmann, 190, 191. 



Eimer, 181. 



Elasmobranchs, 35 ; corpus luteum 



in, 143. 

 Elephants, testes, 151. 

 Eugenics, 242. 

 Eunuch, 73. 

 Evolution, evidence of, 6. 



Factors, origin of, 44. 

 Feathers, 36 ; evolution of, 227. 

 Flat-fishes, 21, 22, 33 ; mutations of, 



198-203. 

 Flight, evolution of, 227. 

 Flounder, 25. 

 Foa, on lactation, 98 ; on grafting 



ovaries, 236. 

 Foges, 76. 

 Fowls, castration of, 74 ; origin of 



breeds, 187. 

 Fractionation of Mendelian factors, 



50. 

 Frankel, 103. 

 Frog, thumb-pad, 163. 



Gallus bankiva, 45, 46, 187. 

 Gates, Dr. R. Ruggles, 177. 

 Geddes and Thomson, 65. 

 Gemmules, 241. 

 Genital ducts, 69. 

 Gigas, (Enothera, 184. 

 Oillichthyi, 190. 

 Gipsy moth, 158. 

 Goltz and Ewald, 97. 

 Gonads, hormones of, 91, 92. 

 Goodale, H. D., 81. 

 Grafting, of ovaries or testes, 235. 

 Graves' disease, 194. 

 Gudernatsch, 193. 

 Guthrie, C. C, 235. 

 Gynandromorphism, 154, 159. 



Haemophilia, 115. 



Hanau, 76. 



Hegner, 42. 



Herdwick sheep, castration in, 93. 



Heredity, 41 ; and sex, 88. 



Hermaphroditism, 64. 



Hill, J. P., 102. 



Horns, 128. 



Houssaye, 35. 



! Inachu8 scorpio, 166. 



i Insects, heredity of sex in, 57. 



Interstitial cells, 94. 



Intromittent organs, 69. 



Japanese long-tailed fowls, 129 ; 

 artificial treatment of, 132. 



Kammerer, 234. 

 Kellog, 158. 

 Kopec, 159. 



Lactation, dependence on stimula- 

 tion, 137 ; in males, 138 ; regula- 

 tion of, 97. 



LaevifoUa, (Enothera, 182. 



Lamarck, 11. 



Lamarckian theory, 133. 



Lane-Claypon, Miss, 95 ; and Star- 

 ling, on ovaries of rabbit, 102. 



Larvae of insects, 233. 



Lata, (Enothera, 184. 



Leghorn, White, 172. 



Lemon-dab, 26. 



Leopold and Havana, 145. 



Lepidoptera, castration in, 158. 



Leptinotarsa, 42. 



Limantria dispar, 158. 



Limon, 100. 



Linnaeus, 14. 



Lode, 76. 



Loeb, on blind fish, 190, 191 ; on 

 blindness in cave animals, 189 ; on 

 tadpoles and thyroid, 193. 



Lop-eared rabbits, grafting experi- 

 ments, 238. 



Lotsy, Professor, 45 ; on crossing, 

 173. 



Lutein, of corpora lutea, 140. 



Male characters in female, 87. 



Mallard crosses, 186. 



Mammary glands, 8 ; origin of, 134 ; 

 rudimentary in male, 90. 



Marshall, 142 ; and Jolly, 99. 



Marsupials, relation of foetus to 

 pouch, 144 ; scrotum of, 150. 



Masked crab, 2. 



Meisenheimer, 158 ; thumb-pad of 

 frog, 165. 



Mendel's Principles of Heredity, 20, 

 107. 



Mendelism, 17, 20, 43 ; and castra- 

 tion, 89. 



Menstruation, 145. 



Metamorphosis, 188 ; in Flat-fishes, 

 200 ; causes of, 212-217 ; and hor- 

 mones, 218 ; and diagnostic charac- 

 ters, 219. 



