FROM instrumental reports from Fordham, Georgetown, St. Louis, Victoria, Honolulu, Manila, Pasadena, Philadelphia, Chicago and Burlington, the U.S. Coast and Geodetic Survey has determined the epicentre of the earthquake of May 10 at 7h. 44-4m. G.C.T. to be provisionally lat. 51° N., long. 179° W. This is to the south of the Andreanof Islands, which form part of the Aleutian Islands, and is on the circum-pacific ring of instability somewhat to the west of the epicentre of the great earthquake of November 10, 1938.