358 



INHIBITION BY EXCITATION AND 



8. Sartorius of 21. temporaria, curarised. Arrangement of experi- 

 ment as before. MC = + 9 sc (reversed). 



9- Sartorius of R. temporaries, curarised. Arrangement of experi- 

 ment as before. MC. before commencing = 43 sc. 



As the preceding series of experiments show, positive kathodic 

 polarisation in a muscle of which the kathodic end has been killed, 

 obeys exactly the same laws in regard to its dependence upon the 

 intensity of the exciting current and its duration of closure as 

 muscle veratrinised at one end, and, apart from differences of 

 degree the corresponding phenomena accord throughout. The 

 negative preliminary jerk, which often ushers in the positive 

 kathodic after-current in normal uninjured muscles, is wanting in 

 both cases throughout, a circumstance which, as it seems, makes the 

 near connexion which doubtless exists between the kathodic closing 

 excitation and the negative after-current, come out in clear relief. 



