MUNROE, Charles Edward, chemist, born in Cambridge, Massachusetts, 24 May, 1849. He was graduated at the Lawrence scientific school of Harvard in 1871, and, after acting as assistant to Professor Wolcott Gibbs, was senior assistant in chemistry there till 1874. In 1872 he conducted the summer course of instruction in chemistry for teachers at Cambridge, which was the first of its kind. During 1873-'4 he also lectured on chemistry at Boston dental college, and in 1874 he was called to the chair of chemistry at the United States naval academy in Annapolis, where he remained until 1886, also lecturing in St. John's college, Annapolis, in 1883-'4. He then accepted the appointment of chemist to the United States torpedo corps at Newport, Rhode Island, where he still (1888) remains. In connection with his appointment at the United States naval academy he was frequently called on by the national authorities to conduct special investigations, principally on explosives. These researches have appeared in scientific journals both in the United States and Europe, and have gained for him a reputation as the authority on that subject in this country. The mineral cabinet at the naval academy was created by him, and he devised and carried into execution a course of post-graduate instruction for naval officers at the Smithsonian institution. He was employed by the United States coast and geodetic survey to examine the oyster-bearing waters of Chesapeake bay, and in 1882 was appointed a special agent by the United States census bureau to report on the building-stones of Maryland and Virginia. Professor Munroe has been active in the Naval institute from its inception, and has held the offices of secretary, treasurer, and corresponding secretary. He is a member of the chemical societies of Berlin, London, and New York, and in 1887 was elected vice-president of the American association for the advancement of science for the chemical section. The titles of his scientific papers exceed 100 in number, and his "Notes on the Literature of Explosives," issued periodically, now include fifteen numbers. He has also published an " Index to the Literature of Explosives" (Baltimore, 1886).