FACTS AND FACTORS OF DEVELOPMENT 45 



we do in associating mind and body in the 

 adult. It is just as materialistic to hold that 

 the mind of the mature man is associated with 

 his body as it is to hold that the beginnings 

 of mind in the germ are associated with the 

 beginnings of the body, and both of these 

 tenets are incontrovertible. 



It seems to me that the mind is related to 

 the body as function is to structure; there are 

 those who maintain that structure is the cause 

 of function, that the real problem in evolution 

 or development is the transformation of one 

 structure into another, and that the functions 

 which go with certain structures are merely 

 incidental results ; on the other hand are those 

 who maintain that function is the cause of 

 structure and that the problem of evolution 

 or development is the change which takes place 

 in functions and habits, these changes causing 

 corresponding transformations of structure. 

 Among adherents of the former view may be 

 classed many morphologists and Neo-Darwin- 

 ians; among proponents of the latter, many 

 physiologists and Neo-JLamarckians. It seems 

 to me that the defenders of each of these views 



