Earthquakes in the West Indian region

At the 1939 meeting of the Eastern Section of the Seismological Society of America, the author presented a paper on earthquakes occurring about 15° to 30° distance from Weston, Massachusetts. The difficulty of locating these quakes was stressed in the paper, due to the strange characteristics of the recordings. Observers of many stations thought of them as a series of “locals”. Using the records from Williamstown, Harvard, Ottawa, and Fordham along with those of Weston, the author located these disturbances just north of the West Indies. He afterwards learned that one or two of them had been felt at Puerto Rico.