22 MY LIFE 



ing importance of the great principle of natural selection, 

 while in several directions I believe that I have extended and 



strengthened it. The principle of " utility/' which is one of 



its chief foundation-stones, I have- always advocated unre- 

 servedly ; while in extending this principle to almost every kind 

 and degree of coloration, and in maintaining the power of 

 natural selection to increase the infertility of hybrid unions, 

 I have considerably extended its range. Hence it is that some 

 of my critics declare that I am more Darwinian than Darwin 

 himself, and in this, I admit, they are not far wrong. 



