628 Causes and Course of Organic Evolution 



in the past, but rather the physical. It is for this reason, and 

 in recognition of it, that in recent years there have developed 

 the great and promising departments of thermochemistry, 

 photochemistry, and electrochemistry, in each of which the 

 chemist leaves his old standpoint of merely considering the 

 atoms and molecules in their varied equilibrated groupings, 

 and has advanced to the more suggestive inquiry of how and 

 why they are grouped in definite manner. 



So we believe that thermochemistry, photochemistry, electro- 

 chemistry, biochemistry, cognitochemistry, and cogitochemistry 

 will each and all be gradually accepted as fields of study, in 

 which the chemist will treat the variously energized ether par- 

 ticles, but will borrow from the physicist a knowledge of the 

 graded modifications or condensations of energy, by w^hich 

 alone the steadily integrated ether particles become of increas- 

 ing complexity, till they culminate in the most complex col- 

 loid molecules that characterize and are associated with, mento- 

 moral and religious processes in the higher animals and spe- 

 cially in man. 



