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WASHINGTON, D.C.
Meeting 513
Cosmos Club
Wednesday, February 28, 1934
Henry Gardiner Ferguson, President William Drumm Johnston Jr., Meeting Secretary
Eugene Thomas Allen—Geophysical Laboratory—Types of rock leaching by thermal waters in Yellowstone Park.
Anna Isabel Jonas—USGS—Hypersthene granodiorite in Virginia, its change to unakite and its age.
James Steele Williams—USGS—Correlation of the Louisiana limestone.
Attendance: 57
Minutes not available.
Published account of meeting appears in: J. Wash. Acad. Sci. 24, 486-495