The Encyclopedia Americana (1920)/Ries, Heinrich

RIES,, Heinrich, American economic geologist: b. Brooklyn, N. Y., 30 April 1871. He was educated at Columbia University. He served on the New York State Geological Survey in 1891-92 and in 1895, and was assistant in mineralogy at Columbia in 1896-97. He became associated with the faculty at Cornell in 1892, was appointed professor of economic geology in 1905, and since 1914 has been head of that department. Author of ‘Economic Geology of United States’ (1905); ‘Building Stone and Clay Products’ (1912); and joint author of ‘Clay, Occurrence, Properties and Uses, History of the Clay Working Industry of United States' (1906); and ‘Engineering Geology’ (1914).