ADVANCED EXPEEIMENTAL PHYSIOLOGY 



83 



katelectrotonns. The minimal stimuli now become maximal, owing 

 to the increase in the excitability of the nerve ut the kathode. 



II III 



= 4 gg1| 



fi.sgglai 



illl 



Hill 



The above experiments can be repeated with a crystal of common 

 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. 81, 82). 



