Abstract :
SOME of the activities of the International Geophysical Year (IGY), as reflected in the program carried out by the United States, have been reported as they occurred throughout the official 18-month period in which the IGY scientific community made its reports to the U.S. National Academy of Sciences. The magnitude of the world-wide effort can be visualized when one sees a listing of the number of principal stations in each activity classified by latitude zone and degree of geographical coverage.
