Henry Martyn Paul appears to be the HM Paul writing so many Edison articles in Science in 1884 and 1885 `"During 1880-'3 he was professor of astronomy in the University of Tokio, Japan, after which he returned to his post in Washington. Professor Paul is a member of various scientific societies, and is the author of astronomical monographs that have been published as appendices to the annual volumes of the "Observations" of the United States naval observatory"