In 1875, he wrote a paper for the American Association for the Advancement of Science "On the Measurement of a Base Line for the Primary Triangulation of the United States Coast Survey near Atlanta, Georgia;" another for the Philosophical Society of Washington on "The Relation of the Legal Standards of Measure of the United States to those of Great Britain and France." In August, 1876, he also delivered an address as retiring president of the American Association for the Advancement of Science.