Ü2 



Art. 1. — K. Fuji 



closing-stimulus, and therefore the response to the Ojoening- 

 stimulus must be due to the nerve-fibres that were not excited by 

 the closing-stimulus. Referring to Oscillogram No. 70, we see 

 that when the intensity of the stimulating current is very weak, 

 the discharge by the opening stimulus is higher than that Ijy 

 closing. When the intensity of the stimulating current is made 

 larger, the discharge due to the closing-stimulus becomes larger while 

 the same due to the opening-stimulus becomes first larger and then 

 smaller. Putting the base for tlie explanation of this phenomenon 

 npDu the theory of "all or none," when the stimulating 

 current is sufficiently strong so that all the plates are discharged 

 by the set of two stimuli, the area of the superposed resultant 

 curve, which corresponds to the number of the plates discharged,'^'" 

 must be constant. In this view we measured the values propor- 

 tional to the areas of the curves on the oscillogram by weighing 

 the pictures cut out from bromide paper, and then multiplying 

 each of them by its respecti\'e inter^•al corresponding to one- 

 millimetre of the abscissa, we got the values proportional to the 

 number of the plates discharged. These values are given in the 

 next table. 



Table XXVI. 



* When we take a small part of the organ as in our experiments, the resistances of all in- 

 dividual columns may be considered to be equal to one another. Let the resistance of one column 



be denoted by r, the current flowing through each of the columns at an instant by ii, fj, i- i,« 



respectively, the resistance of the external conductor by B, and the current flowing through it 

 by /. Let the electromotive force of an elementary discharge of a plate be e, and the number of 



