592 CKRKBRAL MENTAL SUBSTKATA. 



It is of importance to remember, concerning tins last 

 Sense-endowment, that part of its impressions are dis- 

 tinctly Tactile in nature, and as such are probably reahz- 

 able, or have their organic seats, in portions of the 

 Tactile Centre ; and that those of them which are least 

 attended by Consciousness are probably the impressions 

 emanating from the Muscles themselves. These last 

 components of the many-sided Kinesthetic Sense corre- 

 spond, in the main, with what has been erroneously 

 termed ' muscular consciousness,' or with the ' muscular 

 sense ' in the most limited acceptation in which this latter 

 term has been used. 



The occurrence of Movement is for the Kinaesthetic 

 Sense, what the presentation of an object is to the 

 Visual Sense ; and the inability to cognize the impres- 

 sions occasioned by Movement (either those that are 

 conscious, those that are unconscious, or both) which is 

 sometimes produced by certain morbid conditions, is a 

 defect of the Kinaesthetic Sense altogether analogous to 



* blindness' in relation to the Sense of Vision. To speak 

 therefore, as Ferrier does,* of this sequence of Movement 

 and the Sensations thereby induced, as a " sensori-motor 

 association," is altogether to miss and invert the real 

 significance of the phenomxcna to which he refers. 



The impressions coming from every one of the ' special ' 

 Sense Organs are, in part, dependent for their various 

 combinations upon the Movements of such organs, and 

 for this, as well as for other reasons subsequently to be 

 referred to, the connections existing between the several 



* perceptive centres ' for such impressions (especially those 

 of Touch and Sight), and the KinjBsthetic Centre must 

 be peculiarly intimate and complex. 



Each 'special' Perceptive Centre and also the 'visceral' 

 * Loc. cit. p. 2C8. 



