 He was made an assistant professor in 1923, an associate professor in 1927, a full professor in 1938, and the David B. Jones Professor of Chemistry in 1958.He retired from Princeton in 1963.From 1963 to 1978 he was involved with the Office of Naval Research (ONR) as a consultant and, in 1969 and 1970, served as the ONR's liaison scientist in London.