182 SUPPLEMENTAL HISTORY OF MAN. 



it would be almost as absurd to doubt the descent 

 of two brothers from the same parents because they 

 differ in personal appearance and intellectual ca- 

 pacity, as it is to doubt the descent in the pedigree 

 of mankind from a common trunk of the several 

 ramifications marked by physical as well as moral 

 differences* 



Whether the latter of these differences in any 

 degree depend upon the former, is a distinct ques- 

 tion, to which we have already alluded : but whether 

 this position be partially or altogether true or false, 

 we are fully warranted in concluding, both from 

 the comparison of man with inferior animals, so 

 far as the inferiority will allow of such comparison, 

 and beyond that, by comparing him with himself, 

 that the great family of mankind loudly proclaim a 

 descent at some period or other from one common 



