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WASHINGTON, D.C.
Meeting 424
Cosmos Club
Wednesday, January 26, 1927
Charles Butts, President William Walden Rubey, Meeting Secretary
Frank Reeves—USGS—Thrust faulting adjacent to the Highwood Mountains, Montana.
Wilmot Hyde Bradley—USGS—Tertiary and recent freshwater algae reefs.
Francois Emile Matthes—USGS—Influence of secondary faults on the development of the Grand Canyon topography.
Attendance: 40
Minutes not available.
Published account of meeting appears in: J. Wash. Acad. Sci. 17, 231-240