Cattle (horned), value of, 110. variations of, 113. Cats, origin of domesticated forms of, 51. their love of well-known places, 51. compared with dogs, 52. their return to wild state, 55. no large species domesticated, 56. Cochineal, 201. Dogs, origin of, 11. fossil species of, 15. savage selection of, 17. civilized conditions of, 18. shepherd breed of, etc., 19. hunting varieties of, 25. intellectual qualities of, 29. evils of fancy breeding, 31. lack of constructive faculty, 40. modes of expression, 44. effect on human sympathy, 48. possible new varieties of, 50. Domestication, relation to culture, 2. relation to sympathies, 4. slow institution of, 7. mainly by Aryan people, 152. problem of, 218. hap-hazard nature of, 225. conditions of, 229. Domesticability, on what depending, 107. Donkey, 93. limited use of, 94. Elephants, native freedom of, 107. origin of, 127. ancient species of, 128. present limitation of, 130. use in war, 130. domesticability of, 131. intelligence of, 132. possible improvement of, 137. future care of species required for preservation, 249. Falconry, 184. Fishes, limits of domestication, 232. Fowls (barnyard), 153. mental qualities of, 154. voices of, 155. domesticability of, 156. game variety of, 159. Giraffe, 249. Goats, 115. limited relation to man, 116. little variation of, 117. limited intelligence of, 118. Guinea hen, 164. Hawking, 184. Horse, economic value to man, 57. origin of, 58. hoof of, 61. field in which developed, 65. domestication of, 66. use in war, 67. effect of mounted men on early peoples, 69. future use in military campaigns, 70. value in agriculture, 74. mental qualities of, 75. ready variations of, 78. Norman variety of, 82. geographic varieties of, 83. Arabian variety of, 85. Indian ponies, 86. care of, 87. shoeing of, 91. influence on man, 100. Hybrids, utility of, 96. Insects, 190. limited value to man, 190. Kangaroo, 240. Mammalia, value of class as source of domesticable animals, 149. future domestication of, 238. Mammals (tertiary), 150. Mammoth, 129. Man, his place in nature, 1. sudden appearance of, 6. as a destroyer, 229. Martha's Vineyard prairie chicken, 257. Milk, value of, as food, 110. Monkeys, little use to man, 250. value for inquiry, 250. Mule, 95. limitations in use of, 95. only hybrid serviceable to man, 96. mental qualities of, 98. Musk ox, 241. Organic hosts, 253. Ostrich, 168. possible improvement of, 168. Pack animals, 104. Parks, national, etc., 256. Pea-fowl, 162. habits of, 163. intelligence of, 164. Pets, influence of, 223. Pig, origin of, 140. value of flesh, 140. progressive domestication of, 142. intelligence of, 143, 148. variations in habits of, 147. Pigeons, 175. origin of, 176. breeds of, 177. mental qualities of, 180. Plants, danger of extinction of species of, 250.