242 Causes and Course of Organic Evolution 



isfied responses to those that are more lastingly "satisfied" 

 and also are upbuilding. 



Proenvironment then we would view as that great and ever- 

 expanding law of organic life, by which varied environal stimuli 

 are linked into a summated and unified response, that brings 

 each organism into satisfied relation to its environment. Such 

 satisfied relation may upbuild, may only prolong, or may 

 even start degeneration and ultimate death, specially if com- 

 bined with unsatisfied molecular states, to each organism 

 and to groups of organisms. 



