WHAT EVOLUTION IS 6i 



tion could scarcely be said to have 

 been available in the time of Lamarck, 

 for most of them have been the result 

 of the scientific endeavor of the last 

 hundred years. It is therefore not 

 surprising that in his day evolution 

 received a serious setback, for at that 

 time not enough was known to give 

 the question a fair hearing. 



Even when Darwin wrote, knowl- 

 edge on many important points was 

 very incomplete compared with what 

 it is to-day. It is, however, a sig- 

 nificant fact that practically all the 

 lines of evidence cited by Darwin as 

 confirmatory of evolution are signifi- 

 cant to-day and much more exten- 

 sively supported than they were in his 

 time. The confirmation thus received 

 is the result of the discovery and im- 

 partial accumulation of new facts on 

 lines that bear on the question at hand. 

 If to the naturalist of Darwin's time 



