412 



INDEX. 



Teeth, of Amphibia, 67. 

 14 of Fishes, 61, 66, 67. 



of Invertebrates, 63. 

 '* of Mammals, 68, 70. 



of Reptiles, 67. 

 " structure of, 3S, 6G, 9, 31. 

 Teleostei, 315, 284, 290-292. 

 Telson, 282. 



Temperature of Animals, 121. 



Tendon, 36. 



Tentacie, 51. 



Tent-caterpillar, 303. 



Termes, 295. 



Terebra, 278, 238. 



Terebratula, 267, 222. 



Terebratulina, 267, 221. 



Termite. 295. 



Tern, 329, 308. 



Testudo, see Turtle. 



Tetrabranchs, 279, 247. 



Tetradecapods, 285, 251, 252. 



Thoracic duct, 95, 61. 



Thorax, 119, 88. 



Thornback, 315, 288. 



Thousand-legged Worm, see Julus. 



Thrush, 340. 



Thy 1 acinus, 343. 



Thyroid Cartilage, 189, 159. 



Ticks, 288. 



Tissue, 33. 



Toad, 318. 



Tongue, of Batrachians, 61. 

 of Birds, 62. 

 of Fishes, 61. 

 " of Insects, 50, 58. 

 " of Mammals, 63. 



of Mollusks, 52. 

 " of Spiders, 60. 

 Top-shell, 278, 242. 

 Tortoise, 323, 302. 



" see Turtle. 

 Totipalmates, 330, 309. 

 Toucan, 335. 

 Touch, 176. 

 Trachea, 119. 



Tracheal, 114, 40, 79, 80, 81. 

 Trichina, 265, 218. 

 Tridacne, 272. 

 Trilobite, 284. 

 Trionyx, 322. 

 Triton, 318, 296. 

 Tritonian, 274, 230. 

 Trochosphere, 211, 175. 

 Trochus, 278. 



embryo of, 211, 176. 

 Trogon, 335, 321. 

 Tubipora, 252, 200. 

 Tunicata, 305, 278, 279. 



" see Ascidians. 

 Turbo, 278, 242. 

 Turkey, 333. 



Turritella, 278. 

 Turtle, 322, 301, 302. 



" alimentary canal of, 82. 



" breathing of, 119. 



" mouth of, 61. 



" shell of, 135. 



" skeleton of, 115. 



" see Chelonia. 

 Tusks, 383. 

 Types, 233. 



Ungulata, 351, 53, 56, 103, 111, 117, 118, 

 129, 138, 344, 345 

 feet of, 129. 



Unio, 272. 



" eggs of, 196. 

 Univalve, see Snail. 

 Ui odela, 317, 294-296. 



Variation, 216. 

 Variety, 235. 

 Veins, 104, 67. 

 Veliger, 211, 176. 

 Vena cava, 104. 

 Venus, 272 

 Venus'-basket, 246. 

 Vermes, 263, 17, 77, 175. 



" see Earth-worm, Worms. 

 Vertebrae, development of, 203. 

 " kinds of, 140, 106, 107. 

 " number of, 140. 

 Vertebrata, 306. 



" absorption in, 94. 



" alimentary canal of, 80. 



" blood of, 98. 



" brain of, 170. 



" circulation in, 107, 281. 



" development of, 205. 



" digestion in 3 92. 

 ear of, 179. 



" exoskeleton of, 134. 



" eye of, 183. 



' ; gastric glands of, 123. 

 heart of, 107. 



< k kidney of, 126. 



" liver of, 124. 



" lungs of, 117. 



" mode of feeding of, 54. 

 mouth of, 60. 



" muscles of, 156. 



" nervous system of, 169. 



" number of species of, 221. 



" pancreas of, 123. 



" salivary glands of, 122. 



" skeleton of, 137. 



" skin of, 128. 



" stomach of, 80. 



" teeth of, 66. 



" tongue of, 60. 



" see Bird, Crocodile, Fish, 

 Frog, Mammal, Reptile. 



