In the October, 1956, issue of American Antiquity (Vol. 22, No. 2) a report was made on preliminary excavations made in 1955 at Cerro Mangote, a preceramic site in Panama. During the 1956 season 6 additional weeks were spent at this site with financial assistance from the American Academy of Arts and Sciences. Briefly, the results of this more extensive work were as follows: Approximately 300 cu. m. of material were excavated, an estimated one-third of the total content of the site. A few sherds were recovered on or immediately below the surface in the same general area as those found the previous year.