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Very rare first edition of a guide introducing Hazewinkel's method of calculating latitude, which was subsequently implemented as the standard method in the national Dutch marine and remained in use until the end of the 19th century. This method by Abraham Cornelis Hazewinkel (1772-1842), a ship's captain who established a Dordrecht school for training sailors in 1817, was also invented simultaneously, but independently, by the Dutch mathematician Rehuel Lobatto (1797-1866), and is known as the Lobatto-Hazewinkel method. It replaced the longer method of Cornelis Douwes, introduced in the late 18th century. An equally rare second edition, published in 1839, was reprinted in facsimile in 1992.With a library stamp on title-page, some occasional foxing, one leaf slightly soiled in the lower margins, binding slightly rubbed and rebacked, with the top of the spine torn. Good nearly untrimmed copy, with most of the deckles intact.l Bierens de Haan 1943; Cat. NHSM, p. 687; Crone Library 807, cf. pp. xlvii-xlviii; Maritieme Gesch. der Nederlanden III, p. 216; Picarta (2 copies); Saakes VIII, pp. 371-372; WorldCat (same 2 copies). With a lithographed folding plate and numerous letterpress tables (numbered I-VI, but some spread over several pages). Pages: 10, [2], [42], 66 pp., 3, [1] ll. Seller Inventory # F63BZTTH4G5B
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