Early life in New Bedford, MA; father's informal education as chemist and engineer; difficulties in early education. Undergraduate at Brown University, 1916-1920; interest in mathematics. Graduate work at MIT, 1920-1922; physics exams; Edwin Wilson's tenure at MIT, state of physics teaching there, limitations of the department. Work with Niels Bohr in Copenhagen, 1922, leading to self-consistent filed idea applied to alkali atoms, Bohr as a person, teacher, and philosopher. Continuation of Copenhagen work for Ph.D. thesis in Department of Mathematics at MIT. Work atmosophere at Yale University, 1923-1930; reluctance about the new wave mechanics, later work in this area. Recollections of Ernest O. Lawrence at Yale, rivalry between Leigh Page and William P. G. Swann; Swann's interest in spiritualism, Page's emission theory of electromagnetism. Development of interest in philosophy and methodology of science; association with Percy W. Bridgeman, Norton Weiner, J. D. Tamarkin. Foundation of Physics course at Yale. Teaching at Brown University from 1930; Carl Barus; development of Mathematics Department under R. G. D. Richardson; Lindsay's supervision methods. Chairman of Brown Physics Department, problems setting up undergraduate degree program post-World War II; supervision of teaching. Research during World War II. Connection with Acoustical Society, 1936, member of executive council; associate editor of ASA Journal, 1950, editor-in-chief 1957, interest in publication of archival technical material. Great figures of the Acoustical Society; growth of and comparison between Acoustical and Physical Societies; role of the American Institute of Physics.