In 1903 he was appointed as a dean of the Brown University Graduate Department, which he was controlling from his office in Wilson Hall. He remained the dean of the graduate school until his retirement in 1926. By that time, the department had grown large enough to become a school within the university which has been attributed to his many contributions. In 1905 he was a corresponding member of Britain and the same year became a member of the First International Congress of Radiology and Electricity at Brussels. The same year, he became a member of the Physikalisch-Medizinische Sozietät at Erlangen. Also, the same year he became the fourth president of American Physical Society, and in 1906, became a member on the advisory board of physics, at the Carnegie Institution of Washington state.