43 



finc^lioiÉ lliul a potciilial «lincfeiice coiild >lill he (lciiK)iibliulL'(l aller 

 llie cuiiejii had heen l)i()keji, whicli accord iii^ly was by no means 

 (he caae. 



For (:oi>i)er the following values were found. (See table 2 [>. 42). 



Tlii« is, therefore, the same resnlt as was obtained for silver, and 

 lead behaves in an analogous way, as appears from the following table. 



TABLE 3. 



Lead electrode in '/2 N . Pb (N03)2-solution. 



After the current had been interrupted no potential difference wit ii 

 the auxiliary electrode could be demonstrated. 



Nickel. 



3. A splendid example for an internal equilibrium setting in very 

 slowly is fm-nished by nickel, as appears from the following result. 



TABLE 4. 



Nickel electrode immersed in V2 N . Ni (NOa), -solution. 



Nickel shows therefore an enormous anodic and cathodic polarisa- 

 tion, which we must ascribe to the very slow setting in of the 

 internal equilibrium, the more so, as we found that even after the 



