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Rh of Washington, District of Columbia. He has never identified himself with any political party. "During my college days at Yale," he says, "I was more influenced by Dana's 'Manual of Geology,' than by any other text-book. Later by Darwin's 'Voyage of the Beagle,' and by Humboldt's 'Cosmos.'" Mountain climbing is his favorite mode of relaxation. His own predilection led him into his profession. He regards the influences upon his life as strong in the following order: "Home, contact with men in active life, private study, early companionship, schools." He says, "I have always regarded as a misfortune my not having received, in early school days, instruction from well-equipped teachers, who might have been able to stimulate in me an interest in studies and arouse ambition for success in life."

He is the author of "The Volcanoes of California, Oregon and Washington Territories," 1883; "The Volcanic Rocks of the Great Basin," 1884; "The Volcanic Rocks of Salvador," 1886; "Descriptive Geology, Vol. 2, U. S. Geological Explorations of the 40th Parallel"; and numerous papers and reports of most useful character in connection with geology, among them the " Geology of Eureka District, Nevada"; "The Geology of the Yellowstone Park."

He was married in November, 1893, to Mary Bruce Robins (Howe).