MAN AND APES. 97 



and Chimpanzee there are but four, and some- 

 times only three. 



The bones of the neck (cervical vertebrae) in 

 man have but short spinous processes, while in 

 the Orang and Gorilla these are enormously 

 elongated. It has been proposed to account 

 for this latter condition by the great weight 

 of the head and jaws in these apes. The little 

 group Nycticebinae, however, presents us with 

 a parallel diversity, though the head and jaws 

 are about equally developed in all of them. 

 These spines are quite short in Loris and 

 Nycticebus, while they are prodigiously long 

 in Perodicticus and Arctocebus. 



The skull of man presents in the frontal 

 region an elevated and rounded contour, very 

 different from what we find in the apes 

 generally, and notably in the higher family 

 of them. It is in the American forms — 

 especially in CallitJmx and Pithecia — that we 

 find the greatest resemblance to man in this 

 respect. It is in the Gorilla that great bony 

 crests (for muscular attachment) — like those 



H 



