This work contains, in alphabetical order, the names of all officers of the navy and marine corps, commissioned, warranted and appointed, including volunteer officers who have entered the service since the establishment of the navy department in 1798, showing the dates of their original entry, progressive rank, and the manner in which those no longer in the service severed their connection from it. The data has been compiled from the original manuscript records of the navy department and from the official navy registers, issued semi-annually by the department. The volume also contains a list of all midshipmen, cadet engineers and naval cadets who have entered the Naval Academy since its establishment, arranged alphabetically by classes through the year 1900. A sketch of the navy from 1775 to 1798, with a register of the officers in service between those dates, as well as a complete and carefully revised list of vessels of the United States Navy from its inception to the present time, form a valuable feature of the work.