THE OOLITES. 



139 



three fingers is 2, 3, 4. They are thus similar to 

 the digits of the hind limb, and are apparently 



\ 



FlG *"n of the oldest-known binl. Arckaopteryx macru* 



showing impressions of the feathers on the wines, legs, and 



tail. FltMD the lithographic stone of Solenhofen (after Dames). 



capable of being applied to the ground like the 

 fore limbs of a quadruped, although the great 

 development of the feathers attached to the 

 arm bones demonstrates that the wings were 



