450 T. Mizuno on the Action of the Coherer. 



In the above tables the first columns show the number of 

 sparks, and the other columns give the successive values of 

 the resistance of the several coherers respectively. Here by 

 " number of sparks " I mean the number of the oscillating. 



Fig. 1. 



20 10 



Number of Sparks. 



eo 



