70 OTJEEENT FORCE. CHAP. VI. §. U. 



by the negative condition of the nerve fibre. I may 

 just remark, that the very fact of the muscular and 

 nervous tissue presenting the same results, would 

 tend also to confirm the opinion, that they are 

 evidently due to one and the same cause, viz. 

 nutrition; and I think suflScient evidence has been 

 adduced to shew, that the nervous tissite and the blood 

 (venous) are in opposite electric states. 



Before quitting this part of my subject, I cannot 

 too strongly urge the necessity of constantly bear- 

 ing in mind the importance of attending to the 

 circumstances imder which the current is manifested 

 in these two tissues, the muscular and the nervous ; 

 and as I have just before alluded to this point 

 when speaking of the muscular current, I must refer 

 to the remarks there made, as they will be found 

 applicable to our present case, to that of the nerve 

 current. 



