88 ORGANISM AND ENVIRONMENT 



nomena have no prospect but to remain seeking indefi- 

 nitely, unless they cut the knot by relapsing into vital- 

 ism. 



But is there no scientific clue through this apparent 

 maze? Does not the element of regulation which, as 

 we have seen throughout, is the outstanding feature 

 of biological phenomena, furnish the clue? In the 

 next lecture this question will be discussed. 



