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WASHINGTON, D.C.
Meeting 592
Cosmos Club
Wednesday, February 12, 1941
John Bernard Reeside Jr., President Wilbur Swett Burbank, Meeting Secretary
Frank Cathcart Calkins—USGS—Curves for determining plagioclases.
Donald Edward White—USGS—Antimony deposits of the Yellow Pine District, Idaho.
Randolph Wallace Chapman—Johns Hopkins University—The Laurel "migmatite" and its significance in petrogenesis.
Attendance: 70
Minutes not available.
Published account of meeting appears in: J. Wash. Acad. Sci. 32, 277-283