Assistant in Harvard Observatory, 1878-1881. Computer and professor United States Signal Service, 1881-1887. Instructor astronomy, Harvard Annex (now Radcliffe College), 1880-1881.
In the United States Government service, in Europe, 1882-1883. Instructor meteorology, Corcoran School of Science, Columbian U., 1884-1885. Special agent United States Weather Bureau, 1890.
Cattle ranching, 1896-1902. Editorial work, 1902-1907. Expert in industrial education Massachusetts Commision on Industrial Education, Massachusetts State Board of Education, 1907-1911.
Improvement and building engineering, since 1914. Served as professor of meteorology United States Navy, aviation detachment, Massachusetts Institute Technology, 1917-1918.