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the nervous system, I shall not dwell pa 

 this part of the subject, but hasten to the 

 principal object of the lecture, to con- 

 sider its Physiology, in order to examine 

 how far Mr. Hunter's Theory of Life, 

 seems adequate to explain the pheno- 

 mena of the nervous functions. 



First then, it is generally believed that 

 all sensation is in the brain, and that all vo- 

 lition proceeds from that organ. This 

 proposition requiring to be impressed so 

 as to produce conviction, for it is the 

 foundation on which all our future rea- 

 soning is founded, I shall state the prin- 

 cipal causes of this opinion. First, If the 

 continuity of a nerve be intercepted at 

 any point between that extremity which 

 receives impressions from the objects of 

 sense, and which therefore may be called 

 the impressible or tangible extremity, and 

 that which communicates with the brain, 



F 



