INDEX. 



405 



Heart, development of, 200, 168. 



" of Mollusks, 106. 



" of Tunicates, 107, 279. 



« of Vertebrates, 107-109, 71-74. 

 Heat, 121. 

 Hedgehog, 346. 

 Helix, 275, 232. 

 Heraiptera, 297, 265, 266. 



" mouth of, 59. 

 Heron, 332, 313. 

 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. 

 Homo cereal, 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, S8, 53. 

 Horse-fly, mouth of, 60, 24. 

 Horseshoe-crab, 284. 



" " jaws of, 53. 



" " skeleton of, 131. 



Hummer, 335. 

 Hyalea, 274, 229. 

 Hydra, 246, 191. 



" budding of, 192. 

 " digestive cavity of, 75. 

 " nerve-cells of, 168. 

 " repair of, 215. 

 Hydroid, see Hydrozoa. 

 Hydrozoa, 246, 178, 191-196. 

 " development of, 205. 

 " metamorphosis of, 212. 

 " see Jelly-fish. 

 Hyena, 355. 



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



" see Bee. 



Hypoblast, 199. 



Ibis, 332. 

 Ichneumon, 304. 

 Ichthyopsida, 309. 

 Ichthyosaurus, 324. 

 Idotia, 286, 251. 

 Iguana, 322. 

 Incisors, 68. 



Individual, 220. 

 Infusoria described, 243, 160. 

 " digestive cavity of, 75. 



fission, 191, 160. 

 " mode of feeding of, 50. 

 "■ motion of, 154. 

 " mouth of, 55. 

 " respiration of, 112. 

 " skin of, 127. 

 Inheritance, 217. 

 Insectivora, 346. 

 Insecta, 291. 



" absorption of, 94. 



" alimentary canal of, 79, 41-43. 



" anatomy of, 43, 81. 



" antennae of, 147. 



" chrysalis of, 172. 



" circulation in, 105, 292. 



" 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, 124. 

 " locomotion of, 159, 162. 

 " metamorphosis of, 207, 172, 173, 



264-267. 

 " mouth of, 57. 

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



muscles of, 156, 131. 

 " nervous system of, 169, 43 

 " respiration in, 114, -291. 

 " salivary glands of, 122. 

 " silk glands of, 40. 

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

 * " smell of, 178. 

 " spiracle of, 114, 79. 

 u touch of, 177, 147. 



trachea? of, 114, 40, 80, 81. 

 " - wings of, 159. 

 Insessores, 337, 322-328. 

 Inspiration, modes of, 115, 119, 120. 

 Instinct, 184. 

 Intelligence, 1S7. 

 Intestine of Amphibian, 82. 

 " of Bird, 84. 

 " of Fish, 81. 

 " of Mammal, 85. 

 " of Reptile, 82. 

 " see Alimentary Canal. 

 Isomya, 272. 

 Ivory, 66. 



Jaws, 51-71. 

 Jay, 339. 



Jelly-fish, 247, 193-197. 



blood of, 97. 

 " development of, 212, 178, 195. 



