BALLINGALL, James. The Mercantile Navy Improved; or, A plan for the greater safety of lives and property in steam vessels, packets, smacks, and yachts, London: published by W. Morrison and sold by Norie and Co., 1832, 8°, FIRST EDITION, 7 folding lithographed plates (some thumb-soiling and spotting), contemporary drab boards (spine worn), Scott bookplate. [Scott 600; Maggs Nautica 905] -- Sir William HILLARY. A Plan for the Construction of a Steam Life Boat. Also for the extinguishment of fire at sea, London: for Geo. B. Whitaker, 1825, 8°, second edition, 19pp., PRESENTATION COPY, half title inscribed: "J. Crofton Croker Esqr. from the Author," modern blue boards, uncut. [Scott 566] With John Cow's Remarks on the manner of fitting boats for Ships of War and Transports (third edition, London, 1843), the Report of the Committee appointed to examine the Life-Boat Models submitted to compete for the premium offered by His Grace The Duke of Northumberland (London, 1851, 4°), both with Scott Library label, and 2 other books. (6)