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...