70 Darwinism and Other Essays. 



way we see to-day that mind appears in connec- 

 tion with certain material circumstances, but we 

 cannot see how or why it is so. Least of all can 

 we say that the material circumstances produce 

 mind ; on the contrary, we can assert most pos- 

 itively that they do not. 



The proof of this rather dogmatic assertion is 

 to be found in the careful study of that very doc- 

 trine of the " correlation of forces " which superfi- 

 cial materialists have exultingly claimed as their 

 own, and which their superficial opponents have 

 foolishly conceded to them. We have been wont 

 to hear this doctrine the crowning achievement 

 of modern science decried as lending support to 

 materialism. If this were really so, we anti-ma- 

 terialists would have a poor case, for the doctrine 

 in question is established beyond all possibility of 

 refutation. But it is not really so. On the con- 

 trary, the final and irretrievable discomfiture of 

 materialism follows as a direct corollary from the 

 discovery of the correlation of forces. 



By the loose phrase, " correlation of forces," 

 what is strictly meant is the transformation of 

 one kind of motion into another kind. What 

 used to be called the " physical forces " such as 

 light, heat, magnetism, and electricity are now 

 known to be peculiar kinds of motion among the 



