Department of Chemistry: Assistant 1887-1888; Instructor 1890-1894; Faculty 1894-1920; Chairman of the Faculty 1906-1909; Director of the Research Laboratory of Physical Chemistry 1903-1920; Acting MIT President, 07-01-1907 to 06-01-1909; MIT Corporation Member 1907-1909 (ex-officio); Co-founder of the California Institute of Technology.
