INDEX. 



413 



Villi, 90, 58. 



Vinegar-eel, 265. 



Vireo, 340, 326. 



Vitelline MembraLe, 193. 



Viviparous, 309. 



Vocal Cords, 189. 



Voice, of Invertebrates, 188. 



" of Vertebrates, 189. 

 Volute, 278, 241. 

 Vorticella, 243, 160. 

 Vulture, 335, 116. 



Walking-stick, 29T. 

 Walrus, 355, 383. 

 Warbler, 340. 

 Wasp, 304. 



Water-boatman, 29T, 265. 

 Water-fleas, 284, 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, 383. 

 Whelk, 278, 228. 



" see Snail. 

 White Ant, 295. 



Windpipe, 119, 86. 



Wings, of Bats, 161, 339, 340. 



" of Birds, 160,304. 



" of Insects, 159, 266. 

 Wolf, 355, 347. 

 Wombat, 343. 

 Woodpecker, 335, 320. 

 Worms, 263. 



" absorption in, 94. 



" alimentary canai 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. 



a reproduction in, 192. 



" respiration of, 113, 77. 

 skin of, 127. 



" see Earth-worm. 

 Wren, 340. 



Yolk, 192. 



Zoological analysis, 236. 



" barriers, 375. 



" history, 18. 



" provinces, 376. 

 Zoology, 19. 



THE END. 



