232 EVOLUTION J 



chological independence were the chemical 

 formulse of every brain metabolism pub- 

 lished to-morrow. 



So then for biology. Its theory of life, of 

 evolution must be in its own terms, of func- 

 tion and form, and free therefore from 

 absorption into the lower physical order, as 

 from exaggeration into the higher ethical 

 and political one. The latter mode of state- 

 ment is the transcendentalist's old-fashioned 

 fable; the former is a materialistic fable. 

 But to correlate and parallelize the biological 

 with the physical order, as with the social, 

 whenever we can: that is a different matter. 



Above all, however, let us as naturalists 

 see that we grasp not only the mechanical 

 and urban point of view but the rustic and 

 physiological one. 



