An experimental test is made of the applicability of Kirchoff's law to porous electrodes. The theory is applied to a dry cell made with three bodies of mix separated from each other by paper walls wet with electrolyte. The three bodies are thus isolated electronically but connected ionically. All three are connected to the external load. Thus, the electronic current flowing into each body of mix is equal to the polarizing current in each body and hence is a measure of the rate of reduction of manganese dioxide in each body. It is shown that established theory explains the distribution of current, using two parameters determined directly from the current distribution data.