CHAPTER VI 



PSYCHIC ADAPTATION 



MEDIUM, adaptation, selection, and heredity are the 

 chief factors of this great movement which passes 

 from the homogeneous to the heterogeneous, from 

 the simple to the complex, by virtue of phenomena 

 which repeat themselves serially, and the advance- 

 ment of which consists in the aggregation of other 

 series to these simple series for the formation of 

 a combined series still more complex. This 

 mechanism of phenomena arranged in an ever- 

 increasing progression is called the theory of 

 evolution. 



In proceeding to expound psychic evolution I 

 come to an extremely important point indeed, 

 the crux of the question. When once this is 

 understood, the application of the theory of 

 evolution to sociology appears more clear and 

 complete, as it removes the antagonism that has 

 been declared to exist between socialism and 

 positive science, owing to the neglect of even 



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