426 
INDEX. 
Hydra, repair of, 215. 
Hydroid, see Hydrozoa. 
Hydrozoa, 246,178, 191-196. 
“ alternate generations, 212. 
“ development of, 205. 
“ see Jelly-fish. 
Hyena, 355. 
Hymenoptera, 303, 22, 42, 81, 277. 
“ see Bee. 
Hypoblast, 199,169. 
In is, 332. 
Ichneumon-fly, 304. 
Ichthyopsida, 30S. 
Ichthyosaurus, 232, 324. 
Idotia, 286, 251. 
Iguana, 322. 
Iguanodon, 324. 
Ileum, 58. 
Imago, 20S, 172,173, 267, 270, 275. 
Incisors, 68. 
Individual, 220, 235. 
Infusoria, 168, 243, 160. 
“ digestion in, 75, 92. 
“ fission, 191, 160. 
“ mode of feeding of, 50. 
“ motion of, 154. 
“ mouth of, 55. 
“ respiration of, 112. 
“ skin of, 127. 
Inheritance, 215. 
Insectivora, 346. 
Insecta, 291. 
“ absorption of, 94. 
“ alimentary canal of, 78, 41-43. 
“ anatomy of, 43, 81. 
“ antennae of, 147. 
“ chrysalis of, 172. 
1,1 circulation in, 105, 293. 
“ development of, 205. 
“ ear of, 179. 
“ eye of, 181,155,156. 
feet and legs of, 162, 127, 131. 
“ flight of, 159. 
“ gizzard of, 79. 
“ heart of, 105, 69. 
“ kidney of, 126, 41, 42. 
“ liver of, 123. 
“ locomotion of, 159,163. 
“ metamorphosis of, 207, 172, 173, 
264-270, 274, 275 
“ mouth of, 57. 
mouth-parts of, 53, 21-24. 
“ muscles of, 156,131. 
nervous system of, 169, 43, 136. 
“ respiration in, 114, 291. 
salivary glands of, 122, 40. 
“ silk glands of, 40. 
“ skeleton of, 132,292, 98, 262. 
“ smell of, 178. 
“ spiracle of, 114, 79. 
Tnsecta, touch of, 176, 147. 
“ tracheae of, 114, 40, 80, 81. 
“ wings of, 159. 
Insessores, 337, 322-328. 
Inspiration, modes of, 115,119,120. 
Instinct, 1S4. 
Intelligence, 187. 
Intestine of Amphibian, 82. 
“ of Bird, 84. 
“ of Fish, SO. 
“ of Mammal, 85, 58. 
“ of Reptile, S2. 
“ see Alimentary Canal. 
Iris, 183,157 
Isomya, 272. 
Ivory, 38, 66. 
Ixodes, 2S8. 
4 
J A.ws, 53-74. 
Jav, 339. 
Jeily-fish, 247, 193-197. 
“ blood of, 97. 
“ development of, 212, 178, 195. 
“ eye of, ISO. 
“ mode of feeding of, 51. 
“ mouth of, 55. 
“ nerves of, 168. 
“ nettle-cells of, 51. 
“ reproduction of, 212. 
Joints, 147. 
Julus, 287. 
Juue-bug, 267. 
Kangaroo, 88, 343. 
Kidney, 126, 41, 42, 46, 52, 93. 
King-crab, see Horseshoe-crab. 
Kingfisher, 335, 327. 
Kite, 335. 
Kiwi-kiwi, 327. 
Labium and Labrcm, 53, 58, 21. 
Labyrinthodontia, 318. 
Lacerta, 321, 300. 
Lacertilia, 321. 
Lachnosterna, 297, 267. 
Lacteals, 94, 60. 
Lacunae, 37, 8. 
Lumellibranchiata, 270, 44, 46, 78, 99,135, 
150, 224-227. 
“ eye of, 1S1, 153. 
“ see Clam. 
Lamellirostres, 331, 310, 311. 
Lamprey, 314, 286. 
Lamp-shell, 266, 221, 222. 
Lancelet, 310, 282. 
Land-snail, 275, 232. 
Lark, 340. 
Larva, 20S, 172, 173, 267, 274, 275. 
Larynx, 1S9, 159. 
Lasso-cells, 51. 
Leech, 26S. 
