THE provisional epicentres of two earthquakes have recently been found by the United States Coast and Geodetic Survey in co–operation with Science Service and the Jesuit Seismological Association. The first, on June 18, 1941, had its epicentre near lat. 51.5° N., long. 32° W., which is in the North Atlantic Ocean on the ridge which stretches from Greenland to the Azores. Occasional earthquakes are known to occur from time to time on this ridge, showing that it is still one of the unstable regions of the earth. The second shock, on June 26, had its epicentre near lat. 13° N., long. 93° E., which is near the Andaman Islands in the Bay of Bengal.