Notes on the flow of current between electrodes on the surface of a metal plate or tube

The paper deals with the flow of current between point electrodes in circular and elliptical areas, a square, a rhombus, narrow and wide lenticular areas and a narrow lune. The flow between points on the surface of metal tubes is considered. Results obtained by the ¿six points in line¿ method are quoted. A collection of derived formulae is added.