AN earthquake of moderate intensity occurred on November 17, 1938, and its epicentre has been determined by the United States Coast and Geodetic Survey in co-operation with Science Service and the Jesuit Seismological Association as lat. 55° N., long. 158° W. It is estimated to have normal focal depth. This preliminary determination was made with the help of readings from the following stations: Georgetown, Fordham, Weston, Chicago, Ann Arbor, Ukiah, Victoria, San Juan, St. Louis, Tucson, Philadelphia, Williamstown, Butte, Bozeman, Honolulu, Manila, Sitka, Pasadena, College, Burlington, Huancayo and Kew. The epicentre is situated under the ocean bed to the south of the Alaska Peninsula, and is not far distant from the scene of the violent earthquake of November 10, which was lat. 56° N., long. 150° W.