ANATOMICAL STRUCTURE OF ANTHROPOID APES. 115 



display the plumage of their original ancestor, the 

 rock-pigeon (Columbia livia). And although the 

 Neanderthal skull is more like that of the ape than 

 any other human skull with which we are acquainted, 



Fig 35. — The Neanderthal skull. A. In profile. B. A front view. 



yet it is by no means so isolated as it at first appears, 

 but is rather the ultimate expression of a series 

 which may be gradually traced back from the 



