Effect of Electrical Stimulation 459 
Fie. 1 
EXPLANATION oF FiG. I 
c, Insulated wooden trough. 
4, Glass tube. 
a, Carbon electrode. (screened). 
d, Cork, held in neck of bottle and perforated 
for the carbon electrode. 
wx, Resistance. 
], Incandescent amp. 
‘w, Line wire. . 
EXPLANATION oF FIG. 2 
c, Insulated wooden trough. 
x, Resistance. 
-w, Line wire. 
&, Shunt. 
