James Cooper, Dictionary of National Biography (1901)
“ Milligan was keenly interested in social and especially in educational questions. In 1888 he went to Germany to inquire about technical education and continuation schools in that country; and the next year he visited Sweden to see the working of the Gottenburg licensing system. In Aberdeen he was an active philanthropist; and all over Scotland his services as a preacher were in much request. When on the eve of retiring from his chair at Aberdeen owing mainly to failing eyesight, Milligan was suddenly seized with illness which soon proved fatal. He died at Edinburgh on 11 Dec. ”
