4to (222 x 164 mm). 46 engraved plates (3 folding). (Minor marginal losses to a few plates, a few plates with minor repairs, a few separations to folds of folding plates, some minor soiling or spotting.) Contemporary mottled calf (rebacked preserving portion of old spine, lettering-piece, and endpapers, some staining). Provenance: Bourdet Delongchamps? (signature, initials on verso of a few plates); Jean Condamin (signature 1939).

FIRST EDITION of Haye and Vincent's extensive treatise on gnomics and the formation and use of sundials. Haye, a manufacturer of sundials, presents several models with descriptions of the instruments and directions for their use. Houzeau and Lancaster, 11591