660 



Dr. S. R. Milner on the 



current is subjected to more complicated variations are to 

 save space given only in the form of" curves, fig. 2. In the 



($j.70/tj NouVziyvicy 



experiment represented by the lower curve (VI), a polarizing 

 current of 1*695 x 10~ 3 ampere was applied for 10 minutes, 

 then cut off, leaving the cell on open circuit for 10 minutes, 

 then again applied for 10 minutes, and so on. Thus in 



