Cleveland Abbe Jr., 62, geographer, 18 April 1934. John Jacob Abel, 81, respected biochemist, 26 May 1938.

Edward Goodrich Acheson, 75, inventor who studied the properties of carbon, 6 July 1931.

Harold D. Arnold, 49, physicist noted for his invention of the three-electrode high-vacuum thermionic tube, 10 July 1933.

Louis Austin, 64, physicist, 27 June 1932.

James Baldwin, 73, noted psychologist who edited Psychological Review, 8 November 1934.

Samuel P. Baldwin, 70, geological explorer who became a pioneer in ornithology and bird-banding, 31 December 1938.

L. A. Bauer, 67, physicist who studied magnetism, 12 April 1932.

Bernard Behrend, 67, construction engineer and inventor, 25 March 1932.

Calvin Bridges, 49, early geneticist who worked on the interpretation of deficiencies in genetic data, 27 December 1938.

Mary Emma Byrd, 84, professor of astronomy who joined the faculty of Smith College, resigning in 1906 to protest the college's acceptance of Rockefeller and Carnegie foundation grants, 30 July 1934.

W. W. Campbell, 76, astronomer, 14 June 1938. William Campbell, 60, metallurgist who advised the federal government and several city and state commissions, 16 December 1936.

Wallace H. Carothers, 41, chemist who investigated synthetic...