856 



772033 



INDEX 



Wolf of Falkland Tslos, ii. 192 



WoUaston, Mr., on varieties of insects, 

 i. 82 



, oa fossil varieties of shells in 



Madeira, i. 88 



, on colors of insects on sea-shore, 



i. 191 



, on wingless beetles, i. 196 



, on rarity of intermediate varie- 

 ties, i. 238 



, on insular insects, ii. 187 



, on land-shells of Madeira natu- 

 ralized, ii. 202 



Wolves, varieties of, i. 134 



Woodcock with earth attached to 1^, 

 ii. 156 



Woodpecker, habits of, i. 246-247 



, green color of, i. 273 



Woodward, Mr., on the duration of 

 specific forms, ii. 72 



, on Pyrgoma, ii. 87 



, on the continuous suooesaioD of 



genera, ii. 100 



Woodward, Mr., on the succession of 



types, ii. 129 

 World, species changing simultaueous- 



ly throughout, ii. 108 

 Wrens, nest of, i. 392 

 Wright, Mr. Chauncey, on the girafiEe, 



i. 304-305 

 , on abrupt modifications, I. 343- 



344 

 Wyman, Prof., on correlation of color 



and effects of poison, i. 37 

 , on the cells of the bee, i. 372 



YOTIATT, Mr., on selection, i. 69 



, on sub-breeds of sheep, i. 64 



, on rudimentary horns in yonog 



cattle, ii. 270 



Z 



Zanthoxyixjn, i. 298 

 Zebra, stripes on, i. 224-226 

 Zeuglodon, tertiary, ii. 115-116 



