Flie Characteristic of Nerve. 

 Exp. 1. 



213 



The constant of the optimal minimal stimulus (i.e., the characteristic) 

 is 130. The energy falls to \ of its original value in nearly y^Vo sec * 



The second portion of this experiment, although less typical than 

 the first, exhibits a similar character. The minimal stimulus is higher 

 and of higher gradient, but further experiments will be required 

 before we may admit this latter change to be other than an accidental 

 effect. In other experiments there has been diminution of minimal 

 stimulus with lower gradient. 



Exp. 1 (repeated.) 



II 



F. 



V. 



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5FV 2 . 



C. 





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