208 EVOLUTION 



usually far too generously, we suspect, but 

 at any rate to make the discovery still so 

 rare for men of science, albeit an open secret 

 to plain folk, that beyond the often measur- 

 able bio-psychoses of the psychological labo- 

 ratory there are psycho-bioses, often im- 

 measurable, in the greater world-laboratory 

 of life. After this initiation, a new and 

 before-unsuspected thought- world opens; 

 and within this begins the real controversy, 

 of reconciling the claims and methods of 

 orderly science with these deepest, yet most 

 incontestable, data of experience. In such 

 ways the enduring contrast, or at least the 

 bias, of the mechanistic and the vitalistic 

 training and temperament may be continued 

 upon a higher spiral, with results ever more 

 fruitful, yet in principle already in view 

 from one side that of carrying physical and 

 chemical, structural and functional inquiries 

 onwards to new triumphs of analysis; but 

 also, from the other side, that of tracing the 

 psychic process deeper and deeper, into the 

 very germs and origins of life. In a word, 

 then, it is for the mechanistic biologist to 

 cease from scoffing at the vitalist as a "mere 

 mystic," and to set about mastering psy- 

 chology until he can turn scientific clearness 

 upon his vagueness. Till then he but lays 

 himself open to a counter-sneer from the 



