388 



INDEX 



Turtles, 259; leather back, 260; 

 green, 260 ; painted, 260 ; snap- 

 ping, 261 ; soft-shelled, 261 ; go- 

 pher, 261 ; characteristics of, 262. 



Umbo, 103. 

 Ungulata, 319. 

 Urochorda, 203. 



Vane, 271. 

 Venus clam, 112. 

 Venus's basket sponge, 42. 

 Vertebrates, 200, 201, 204; mode of 



digestion of, 361. 

 Vesal, 379. 



Viceroy butterfly, 358. 

 Vorticella, 32. 



Walking sticks, 355. 

 Wallace, A. R., 379. 

 Walrus, 326. 



Wasps, 191, 192; mud-daubers, 192; 

 polistes, 191, 192 ; vespa, 192. 



Water vascular system, 92. 



Weaver birds, 294. 



Weismann, 379. 



Whales, 317 ; whalebone, 317 ; bow- 

 head, 318; razor-back, 318; sul- 

 phur bottom, 318 ; sperm, 317. 



Whippoorwills, 288. 



White, Gilbert, 377. 



Winged mammals, 331. 



Wolff, 379. 



Woodcock, 284. 



Woodpecker, 287 ; red-headed, 287. 



Wotten, 379. 



Yellow fever, 185. 



Zeuglodon, 352. 



Zoea, 139. 



Zooids, 51. 



Zoology, definition and extent of, 9. 



