1 20 The Evolution Hypothesis. 



of facts apparently in direct conflict with it, and 

 which must be got out of the way before it can be 

 accepted. For if there be any fact incapable of being 

 interpreted in terms of matter and motion, the postu- 

 late in question is untrue. To bring the intellectual 

 activities, the moral feeling, and the emotions under 

 the law in question, the phenomena of mind must be 

 compelled to take a place among the correlated forces 

 of the cosmos, each of which may be transformed into 

 one of the others. The endeavour to reduce mental 

 operations to instances of the correlation of physical 

 forces, has, as we shall see, failed. If our reasoning 

 on that question, set out in a future chapter prove to 

 be well-founded, this postulate also must be swept 

 away. 



4. It is necessary also to grant the evolutionist, 

 that the total amount of matter in the cosmos is 

 never increased or diminished ; and that the total 

 amount of motion remains invariable. 



If the matter existing in the primal form of the 

 universe were either increased or diminished, the 

 law of the continuous redistribution of matter and 

 motion would not furnish a true account of cosmic 

 change. Let us imagine matter at any moment, in- 

 creased by the transference of force existing in some 

 other mode into matter, that is, into force " resis- 

 tent and occupying space ; " the doctrine of evolution 

 would be falsified. All the relations of the physical 

 cosmos would be modified; for the proportions of 



