Dock-yards and iron works of Great Britain and France. Letter from the Secretary of the Navy, in answer to a resolution of the House of 20th instant, transmitting report of Chief Engineer King, as also May, in relation to iron-clad vessels and dock-yards of Europe. December 22, 1864. -- Referred to the Committee on Naval Affairs and ordered to be printed. January 19, 1865. -- Ordered that 1,000 copies, with the maps accompanying the same, be printed for the use of the Navy Department