EULER, Leonhard. Scientia navalis seu tractatus de construendis ac dirigendis navibus, St. Petersburg: Imperial Academy of Sciences, 1749, 2 volumes, 4°, FIRST EDITION, 65 folding engraved plates (title and dedication of vol. I laid down, both titles lightly soiled, heavy marginal soiling to plates in vol. I, plates in vol. II dampstained, one crudely repaired with adhesive tape, text of both vols. dampstained, a few marginal tears), contemporary calf (rebacked), Scott bookplate [Scott 259: "a comprehensive work dealing with the mathematical principles and theory of shipbuilding"; Maggs Nautica 279] (2)