INDEX 



363 



Whalebone, 263. 



White fish, 212. 



Wildcat, 269. 



Wing of bird, 62. 



Wings, scales of butterflie ', 



281. 

 Wolf, gray, 269. 

 Wolverine, 269. 

 Woodchuck, 260. 

 Wood-frog, 217. 

 Wood-lice, 157. 

 Wood-rat, 260; nest of, 46. 

 Worker, honey-bee, *307. 



Worms, marine, *I49; thousand- 

 legged, 159. 



Yellow fever, disseminated by 

 mosquitoes, 9. 



Yellowhammer, *247. 



Yellow-jacket, 315; life of com- 

 munity of, 316; nest of, *3i6. 



Yellow-jacket, nest of queen, *3i7. 



Young, care of, by batrachians, 

 44; care of, by birds, 44; care 

 of, by fishes, 42; care of, by 

 mammals, 44. 



