434 
INDEX. 
Unio, eggs of, 196. 
Univalve, see Snail. 
Urochordatn, 309. 
Urodela, 31S, 295, 29G. 
Vanessa, 303, 278. 
Variation, 216. 
Variety, 235. 
Veins, 68, 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, 141, 106, 107. 
“ number of, 141. 
Vertebrata, 305. 
“ absorption in, 94. 
“ alimentary caual of, 80-91. 
“ blood of, 97. 
“ brain of, 170. 
“ circulation in, 75, 76. 
“ development of, 205. 
“ digestion in, 92. 
“ ear of, 179. 
“ exoskeleton of, 134. 
“ eye of, 183. 
“ gastric glands of, 123. 
“ heart of, 107. 
“ kidney of, 126, 93. 
tc liver of, 124. 
66 lungs of, 117. 
“ mode of feeding of, 54. 
“ mouth of, GO. 
“ 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, SO. 
“ teeth of, 66. 
“ tongue of, 61. 
see Bird, Crocodile, Fish, 
Frog, Mammal, Reptile. 
Vespa, 304. 
Villi, 95, 58. 
Vinegar-eel, 265. 
Viper, 320, 298. 
Vireo, 340, 326. 
Vitality, 29. 
Vitelline Membrane, 193. 
Viviparous, 30S. 
Vocal Cords, 1S9. 
Voice of Invertebrates, 1SS. 
“ of Vertebrates, 1S9. 
Volute, 278, 241. 
Vorticella, 243,160. 
Vulpes, 349. 
Vulture, 335, 116. 
Walking-stick, 297. 
Walrus, 355, 383. 
Warbler, 340. 
Wasp, 304. 
Water-beetle, 127. 
Water-boatman, 297, 265. 
Water-fleas, 2S4, 255. 
Wax-wing, 340. 
Weasel, 355, 348. 
Weevil, 300. 
Whale, 348, 341, 342. 
“ baleen of, 65, 30. 
“ brain of, 170. 
“ fat of, 39. 
“ mode of feeding of, 50. 
“ mouth of, 62. 
“ swimming of, 159. 
“ teeth of, 207, 3S3. 
Whale-bone, 65, 136, 30. 
Wheel-animalcule, 266, 219. 
Whelk, 278, 228, 246, 254. 
“ see Snail. 
White Ant, 295. 
Windpipe, 119, 86. 
Wings of Bats, 161,182, 339, 340. 
“ of Birds, 160, 304. 
“ of Insects, 159, 98, 266. 
Wolf, 355, 347. 
Woodpecker, 335, 320. 
Worms, 263. 
“ absorption in, 94. 
“ alimentary canal of, 77. 
“ blood of, 98. 
“ eye of, 17. 
“ head of, 17. 
“ jaws of, 17. 
“ larva of, 175. 
locomotion of, 161. 
“ mouth of, 57. 
“ number of species of, 221. 
“ proboscis of, 17. 
“ reproduction in, 192,175. 
“ respiration of, 113, 77. 
“ skin of, 127. 
“ see Earth-worm, Leech, Nereis. 
Wren, 340. 
Yolk, 192. 
Zoom, 221. 
Zoological analysis, 236. 
“ barriers, 373. 
“ history, 14. 
“ provinces, 375. 
Zoology, 12. 
Zygapophyses, 140. 
THE END 
