Autograph Letter Signed, to his nephew, offering birthday greetings, with many gloomy reflections ‘on this black Ash Wednesday, black physically as well as morally’. 3 pp. 7 x 4½ inches, in good condition, traces of mounting. Ash Wednesday, 1853. Admiral Sir Francis Beaufort (1774-1857), Hydrographer to the Navy, devised the Beaufort Scale of wind force and a tabulated system of weather registration.