Sources of Underground Corrosion Potential Differences^★

K. G. COMPTON has worked with corrosion problems for more than 25 years at the Bell Telephone Laboratories, Murray Hill, N. J. During World War II he was a consultant on the deterioration of materials to the NDRC and the chief of Ordnance; he has also been active on corrosion committees of several technical societies. It was at the State College of Washington that he received his training in electrical and chemical engineering and in electrochemistry.