328 



THE SENSES 



end-organs), no separable conscious impression is represented by the 

 separate afferent organs. Each impulse, however, going inward more 

 or less, probably does or tends to do something in the organism. Each 

 is useful in its degree and probably also conscious in its degree, but each 

 is not necessarily directive of the attention of the individual so as to 

 make him fully conscious of any sensation. 



FIG. 181 



Plan of the afferent paths from the sense-organs, showing their morphological differences, 

 (Peripheral neurone-cell in back; central neurone-cell in white.) A, "general sensibility;" B, 

 taste; C, hearing; D, smell; E, vision; AN, spinal cord; DD, decussation of the neuraxones of 

 the central neurones. (Morat.) 



Another matter needs an introductory word for clearness' sake. It is 

 the province of anatomy to describe the structure of the sense-organs. It 

 is just as surely the duty of psychology to describe their function which 

 partly is consciousness. But physiology in this case ordinarily does 

 something of both, for the mode of working of these often complicated 



