CLASSIFICATION OF SCIENCES 97 



Chorology and Ecology, Biology in the 

 narrower sense (the study of structure, 

 the study of growth and reproduction, 

 the study of functions, Psychology, and 

 Sociology, and finally History (including 

 the study of organic as well as human 

 evolution). 



BIO-PHYSICS. To his long list of sciences Prof. 

 Pearson would add another a cross-link between 

 Physical and Biological Sciences which he calls 

 Bio-physics. This science particularly excites our 

 interest, for in spite of its very shadowy nature 

 (even Pearson admitting that it "does not appear 

 to have advanced very far at present") the idea 

 of it is provocative and raises the kind of ques- 

 tion which makes the problem of classifying the 

 sciences of deep importance. 



Prof. Pearson says that "life invariably occurs 

 associated with sense-impressions similar to those 

 of lifeless forms," and that "organisms appear 

 to have chemical and physical structure differing 

 only in complexity from inorganic forms." But 

 our impression is that the difference in complexity 

 has involved a difference in kind, such that the 

 interpretative formulae of the physical sciences 

 do not suffice for the description of the growth 

 and activities, the development and evolution of 

 organisms. Living creatures are historic beings, 



