214 NATURAL SELECTION ix 



pigeon, the production of which are equally beyond its 

 undirected power. 



The objections which in this essay I have taken to the 

 view that the same law which appears to have sufficed for 

 the development of animals has been alone the cause of man's 

 superior physical and mental nature, will, I have no doubt, 

 be overruled and explained away. But I venture to think 

 they will nevertheless maintain their ground, and that they 

 can only be met by the discovery of new facts or new laws, 

 of a nature very different from any yet known to us. I can 

 only hope that my treatment of the subject, though neces- 

 sarily very meagre, has been clear and intelligible ; and that 

 it may prove suggestive both to the opponents and to the 

 upholders of the theory of natural selection. 



