72 A CRUMB FOR THE [v. 



motions. Nowhere is there such a thing as the 

 metamorphosis of motion into feeling or of feeling 

 into motion. 



Of course I do not mean that the circuit, as thus 

 described, has ever been experimentally traced, 

 or that it can be experimentally traced. What 

 I mean is, that, if the law of the "correlation 

 of forces " is to be applied at all to the physical pro- 

 cesses which go on within the living organism, we are 

 of necessity bound to render our whole account in 

 terms of motion that can be quantitatively measured. 

 Once admit into the circuit of metamorphosis some 

 element such as feeling that does not allow of 

 quantitative measurement, and the correlation can no 

 longer be established ; we are landed at once in ab- 

 surdity and contradiction. So far as the correlation 

 of forces has anything to do with it, the entire circle 

 of transmutation, from the lowest physico-chemical 

 motion all the way up to the highest nerve-motion 

 and all the way down again to the lowest physico- 

 chemical motion, must be described in physical terms, 

 and no account whatever can be taken of any such 

 thing as feeling or consciousness. 



On such grounds as these I maintain that feeling is 

 not a product of nerve-motion in anything like the 

 sense that light is sometimes a product of heat, or 



