WATSON (Ralph). A brief explanatory statement of the principle of A Plan for Preventing Ships Foundering at Sea, and thereby rendering every ship A Life Ship, by Ralph Watson.1829

London; Printed by A. Hancock, Middle Row Place, Holborn, Presentation inscription from the author to Sir Thomas Phillipps on upper blank margin of title, 2 small illustrations in the text, some light foxing on outer edges in places, [5], 6-70, [2] pp., modern boards with printed paper label on upper cover, a good copy. A Treatise on the Invention or introduction of Air-filled Cargo Flotation Tubes, or Copper Tanks.