THE DOCTRINE OF ENERGY 99 



the cerebral process. The luminous undulation 

 and the sound-wave must both produce trans- 

 mutation of the cerebral Energy in order to affect 

 Consciousness. Yet the various characters of the 

 transmitted impulses are distinguishable in the 

 resultant cerebral transmutations. Thus I feel 

 sensations of hardness, roughness, pain, colour, 

 sound, etc. It is by a process of mental construc- 

 tion that I associate these with the forms of my 

 exertional activity, and thus frame my conceptions 

 of real bodies in the world around me those 

 which I more directly associate with the Energy 

 subject to my Volition being conceived as repre- 

 senting my body. For reasons of convenience, I 

 refer those conceptions chiefly to the co-ordinated 

 visual presentation, and thus build up my concep- 

 tion of the extended world of material things. 

 Science is possible because all transmutations of 

 Energy take place according to definite numerical 

 laws and ratios. The whole work of Science is to 

 explain every phenomenon in terms of its definite 

 transmutation of Energy. These definite numerical 

 laws and processes are characteristic of all Energy 

 transmutation, and thus regulate the experience 

 of every intelligent being. It is in virtue of these 

 that our separate systems of knowledge correspond, 

 and that we are thus presented each with corre- 



