348 FROM THE GREEKS TO DARWIN 



pen to be adapted to it survive. There is really a 

 wide gap between these two statements and ap- 

 plications of the theory. 



A further striking feature in this parallelism 

 of thought is that Wallace, like Darwin, first 

 caught the suggestion of the struggle for ex- 

 istence from reading Malthus. 



Unlike Darwin, Wallace conserved his earlier 

 views entire; he remained a rigid natural selec- 

 tionist, and incorporated the extreme views of 

 Darwin upon the importance of variations in sin- 

 gle characters. As one of the leaders of thought 

 in contemporary Evolution, Wallace belongs 

 chiefly to the after-Darwin period. 



This closes the main history of the evolution 

 idea, from the earliest period of Greek thought 

 to the full pronouncement of the idea in the 

 Origin of Species in 1859. In another volume. 

 Impressions of Great Naturalists, the Darwin 

 story is told more fully. 



