Assistant in General Chemistry 1868-1869; Instructor in Qualitative Analysis 1869-1870; Assistant Professor of Analytical Chemistry 1870-1871; Professor of Mineralogy and Assaying 1871-1873; Professor of Mining Engineering and Metallurgy 1873-1914; Professor Emeritus 1914-1945; Director, Mining & Metallurgy Laboratory 1871-1884; Head of the Department of Mining Engineering and Metallurgy 1873-1914; Secretary of the Faculty 1878-1883; President of the Alumni Association 1876-1881.
