 He then served as an assistant in Philadelphia, Baltimore, and at Mount Weather, which is located in the Blue Ridge Mountains of Virginia.He was made chairman of the section on History and Bibliography of the International Meteorological Congress, Chicago in 1893.His contacts with meteorologists from abroad led him to take a year's leave of absence to study in Germany, 1896-7, where he took special courses at the University of Berlin and became a member of the German Meteorological Society.