284 COSMIC PRILOSOIEY, [pt. u 



In the following chapter we shall have frequent occasion 

 to refer to this circumstance of heterogeneity of the social 

 environment as manifested psychologically, in its effects 

 upon the intellectual mobility of men regarded as indi- 

 viduals. To pursue the problem of pfogressiveness into this 

 psychological region is the way in which to obtain a basis 

 for the axplanation of the progress from Brute to Man ; an^l 

 to this crowning inquiry we must now address ourselves. 



