49 



In common* with other animals men often fail in the 

 struggle for existence, become submerged and disappear. 

 Natural selection operates among mankind to extermin- 

 ate the unfit and to preserve the better adapted individ- 

 uals who transmit to their children the characteristics 



From Romanes, " Darwin and after Darwin." 



FIGUBE 12. Portrait of a Young Male Child. Photographed from 

 life, when the mobile feet were for a short time at rest in a 

 position quite apelike. 



which gave them advantage. Sexual selection is prob- 

 ably more operative in man than in any other animal 

 species. Among men, especially civilized man, choice 

 in marriage has come to be based less upon the physical 

 attractions which appeal to the lower animals, and more 

 largely upon intellectual and moral attractions. Sexual 

 selection thus serves to increase and perpetuate these 

 highly important characteristics. 



