96 Causes and Course of Organic Evolution 



thermic 

 lumic 

 (tonic) 

 chemic 

 (molic) 

 electric 

 biotic 

 cognitic 

 cogitic 



For reasons which need not be given here the highly important 

 exhibitions of energy that we have termed tonic and moHc 

 (or gravic) ^\^ll be considered later. A more detailed study 

 of the characteristics of biotic and cognitic energies will next 

 be made. 



