154 



LECTURE VI. 



ence in the development of the hands in the two genera. But 

 now, instead of the hand of the chimpanzee, take that of the 

 gorilla. Its breadth and the thickness of the thumb so much 

 approach that of man, that, as Huxley justly observes, there is 

 more dissimilarity between the hand of the orang, which has 

 one bone more in the carpus, and that of the gorilla, than 

 between the hand of the gorilla and that of man. It is not 

 necessary to shew farther how the gorilla, with regard to his 

 limbs, presents a perfect transition from the ape to man. If 

 an isolated arm of the gorilla were found in a fossil state, it 

 would unhesitatingly be ascribed to a species of man ; just as 

 the cranium of a microcephalus would be regarded as a new 

 species of ape. The difference is still more marked in the leg, 

 not so much as regards the relative length of the several parts 

 as in the internal structure. Assuming, again, the length of the 



Fig. 54. Hand of the Chimpanzee : the pahn. 



