484 PRIMARY FACTORS OF ORGANIC EVOLUTION. 



by their valency, into which the ultimate substances 

 of nature naturally fall. This combination I have sug- 

 gested might account for the chemical inertness of 

 protoplasm, through the mutual inhibition which each 

 of these elements might be supposed to exercise over 

 the other, owing to the diversity of their modes of 

 chemical action. 



In order to present more clearly the views enun- 

 ciated in the preceding pages, I give a synoptic table 

 of energies. 



I. Anagenetic 



II. Catagenetic 



2. BATHMOGENESIS. 



The innumerable structures which are due to the 

 activity of bathmisms may be supposed to result from 

 the composition of the inherited form with energies 

 which are derived from sources external to the germ- 

 plasma, whether within the soma or external to it. 

 These interferences produce new and specific types of 

 energy. The inherited bathmism I have termed "sim- 

 ple growth force, " and the modified forms I have termed 

 ' < grade growth force. " l It appears that these types of 

 energy should be distinguished by special names. 

 Hence I have proposed to restrict the term bathmism 



"^Proceedings American Philosophical Society, 1871, p. 253. 



