[Draft report] Portsmouth Yard [to Yard Officers]/S Goodrich, [re sheathing ships with zinc in lieu of copper. Refers to Sebastien Chaulet's proposal; Messrs Sylvester and Dobson have a patent for making it into Sheets and Pipes' (this is probably Charles Sylvester's patent 2849 of 1805 May); 'Messrs Philip George Junr & Co of Bristol are manufacturers of the Patent Malleable Zinc'. Bears note, 1834 Jan/S Goodrich, re reports he made 'through and to' Dock Yard Officers]