ADVANCED EXPERIMENTAL PHYSIOLOGY 125 



become maximal, owing to the increase in the excitability of the 

 nerve at the kathode. 



The above experiments can be repeated with a crystal of common 



ll 



salt placed in the position of the stimulating electrodes. The salt 

 causes chemical excitation, and the muscle shows incomplete 

 tetanus, which is quelled by anelectrotonus, and augmented by 

 katelectrotonus (Figs. 127, 128). 





