Department of Chemistry: Instructor in Analytical Chemistry 1894-1900; Faculty 1900-1911; Department of Chemical Engineering: Faculty 1911-1920; Department Head 1912-1920; Director, School of Chemical Engineering Practice in Bangor, ME 1916-1920; Lecturer in Chemical Engineering 1921; Non-Resident Professor of Chemical Engineering 1923-1934; Director, Research Laboratory of Applied Chemistry 1908-1920; Director, Division of Industrial Cooperation & Research 1920-1921.
