£400
8vo, pp. xvi, xlv, [i], 208, xxvii, [i], 282. Contemporary half black calf, marbled boards, spine divided by double gilt rules between blind rolls, lettered in gilt direct, edges sprinkled red. Some spotting to first and last leaves. A bit rubbed and a touch worn.
Two navigation aids by hydrographer John Purdy (1773-1843), covering the whole of the Mediterranean between them. Purdy 'was respected as the foremost authority in private chart publishing, where he was exceptional for the care with which he acknowledged the many varied sources on which his work was based' (ODNB) and is the namesake of the Purdy Islands in the Bismark Sea.
Both volumes are scarce, with The Strait of Gibraltar only showing digital copies on Library Hub and 2 copies on Worldcat, at California and Missouri, and The Gulf of Venice only at the National Maritime Museum, Greenwich.
