IN ORGANIC EVOLUTION 87 



existence of one such cause, and this one he set 

 forth in most effective fashion. Without selec- 

 tion, the other Ufe-forces known in his day could 

 not be imagined to lead to any evolutionary re- 

 sults. We are to-day in the same condition. If 

 we exclude selection from our category of forces, 

 we imagine an evolution without motive force, an 

 evolution which would bring about no result. 

 But in Darwin's mind, Natural Selection was the 

 cognate of artificial selection. At bottom they 

 were to him the same thing, and segregation a 

 necessary element in both. 



Natural Selection was contrasted to supernat-, 

 ural selection or special creation, a theory by 

 which knowable facts were referred to unknow-j 

 able causes, operations wholly unimaginable ii| 

 application to details. At present, we have 

 ceased to set off selection as against creation. 

 We agree that all processes are alike natural or 

 alike supernatural, if we consider them in their 

 philosophic aspects. 



The origin of a species is as natural as the for- 

 mation of a snow bank, and both are resultants of 

 forces and conditions within the range of our ob- 

 jective study. 



POST-DARWINIAN VIEWS 



As compared with Darwin, the investigator of 

 to-day has more facts at his disposal; better in- 

 strimients of precision; less need to heed the 

 opposition of ignorance and bigotry; and greater 



