INDEX. 



405 



Heart, development of, 200, 168. 

 " ofMollusks, 106. 

 " of Tunicates, 107, 279. 

 " of Vertebrates, 107-109, 71-74. 

 Heat, 121. 

 Hedgehog, 346. 

 Helix, 275, 232. 

 Hemiptera, 297, 265, 266. 

 " mouth of, 59. 

 Heron, 332, 813. 

 Heterocercal, 159, 123. 

 Heteromya, 272. 

 Hippopotamus, 352. 



foot of, 129. 

 Histology, 12. 

 Hog, 352. 



" teeth of, 67. 

 Holothuroidea, 262, 215. 

 Homarus, see Lobster. 

 Homo, see Man. 

 Homocercal, 159, 287. 

 Homology, 217. 



" serial, 218. 

 Homomorphism, 217. 

 Hoofs, 136, 103. 

 Hornera, 267, 220. 

 Horns, 136. 

 Horse, brain of, 171, 138. 



hoof of, 136, 164, 103, 129. 

 skeleton of, 151, 117. 

 skull of, 144, 111. 

 splint-bones of, 207. 

 stomach of, 88, 53. 

 Horse-fly, mouth of, 60, 24. 

 Horseshoe-crab, 284. 



44 " jaws of, 53. 



44 " skeleton of, 131. 



Hummer, 335. 

 Hyalea, 274, 229. 

 Hydra, 246, 191. 



44 budding of, 192. 

 44 digestive cavity of, 75. 

 44 nerve-cells of, 168. 

 44 repair of, 215. 

 Hydroid, see Hydrozoa. 

 Hydrozoa, 246, 178, 191-196. 

 14 development of, 205. 

 44 metamorphosis of, 212. 

 44 see Jelly-fish. 

 Hyena, 355. 

 Hymenoptera, 303, 22, 42, 81, 277. 



Ilypoblast, 199. 



Ibis, 332. 

 Ichneumon, 304. 

 Ichthyopsida, 309. 

 Ichthyosaurus, 324. 

 Idotia, 286, 251. 

 Iguana, 322. 

 Incisors, 68. 



Individual, 220. 

 Infusoria described, 243, 160. 

 44 digestive cavity of, 75. 



fission, 191, 160. 

 44 mode of feeding of, 50. 

 14 motion of, 154. 

 44 mouth of, 55. 

 44 respiration of, 112. 

 41 skin of, 127. 

 Inheritance, 21T. 

 Insectivora, 346. 

 Insecta, 291. 



44 absorption of, 94. 



44 alimentary canal of, 79, 41-43. 



44 anatomy of, 43, 81. 



44 antennae of, 147. 



44 chrysalis of, 172. 



circulation in, 105, 292. 



development ofi 205. 



ear of, 179. 



eye of, 181, 155, 156. 



feet and legs of, 162, 127, 181. 



flight of, 159. 



gizzard of, 79. 



heart of, 105, 69. 



kidney of, 126, 41, 42. 



liver of, 124. 



locomotion of, 159, 162. 



metamorphosis of, 207, 172, 178, 



264-267. 



44 mouth of, 57. 

 " mouth-parts of, 53, 21-24. 

 41 muscles of, 156, 131. 

 " nervous system of, 169, 48. 



respiration in, 114, 291. 

 44 salivary glands of, 122. 

 14 silk glands of, 40. 

 44 skeleton of, 132, 292, 98, 262. 

 14 smell of, 178. 



spiracle of, 114, 79. 

 44 touch of, 177, 147. 



tracheae of, 114, 40, 80, 81. 

 " wings of, 159. 

 Insessores, 337, 322-328. 

 Inspiration, modes of, 115, 119, 120. 

 Instinct, 184. 

 Intelligence, 187. 

 Intestine of Amphibian, 82. 

 of Bird, 84. 

 of Fish, 81. 

 44 of Mammal, 85. 

 44 of Keptile, 82. 

 44 see Alimentary Canal. 

 Isomya, 272. 

 Ivory, 66. 



JAWS, 51-71. 

 Jay, 339. 



Jelly-fish, 247, 193-197. 

 44 blood of, 97. 



development of, 212, 178, 196. 



