154 THE SCOPE OF MIND. 



and properties in that separate capacity. But of mind 

 apart from body we have no direct experience, and 



absolutely no knowledge In the second place we 



have every reason for believing that there is, in company 

 with all our mental processes, an unbroken material 

 succession. From the ingress of a sensation to the out- 

 going responses in action, the mental succession is not for 



an instant dissevered from a physical succession 



It would be incompatible with everything we know of 

 cerebral action, to suppose that the physical chain ends 

 abruptly in a physical void, occupied by an immaterial 

 substance ; which immaterial substance, after working 

 alone, imparts its results to the other edge of the physical 

 break, and determines the active response two shores of 

 the material with an intervening ocean of the immaterial." 

 The difficulties in working such a hypothesis are in fact 

 extreme, even if it had not been negatived by the many 

 other considerations referred to in previous pages. 



In treating of 'the Brain as an organ of Mind,' there- 

 fore, it will be understood that we use the word ' organ ' 

 merely in the sense that it is a part whose molecular 

 changes and activities, constitute the essential correlatives 

 of those phases of Consciousness known as Sensations, 

 Emotions, Thoughts, and Volitions, as well as of a con- 

 siderable part of the sum total of those other related 

 nerve actions which are unattended by Consciousness, and 

 whose results form, in accordance with the views above 

 stated, so large a proportion of the phenomena compre* 

 bended under the general abstract word ' Mind.' 



From what has been already said, it will be seen that 

 the study of ' mental phenomena ' has to be carried on in 

 many different directions, and that it is one which is beset 

 with peculiar difficulties. The following table or diagram 



