International Recovery in Seismology

International cooperation is essential to some departments of seismology. Investigation of the interior of the earth from seismic data, reliable statistics of earthquakes, study of earthquake geography--all require a widely distributed network of seismological stations. It is gratifying that the world-wide seismological program is now vigorously recovering from the disasters and interruptions of World War II. The following account corresponds to information available at Pasadena in September 1947. It does not include projects for the restoration or improvement of old stations or the establishment of new ones.