[OPTHALMOLOGY]. -- DESHAIS GENDRON, Louis Florent. Trait des maladies des yeux, et des moyens & operations propres leur gurison. Paris: Claude J.B. Herissant, 1770. 2 volumes, 12o (164 x 96 mm). Half-titles, errata slips (occasional light spotting). Contemporary mottled calf, spines gilt, morocco lettering pieces (corners and extremities worn, losses to spine ends and back cover of Vol. I). Provenance: presentation copy (initialled "D.G." by the author on the final leaf of the dedication). FIRST EDITION. NLM/Blake p. 117. -- GUERIN, Pierre (1740-1827). Trait sur les maladies des yeux. Lyons: V. Reguilliat, 1769. 12o (163 x 97 mm). Folding engraved plates (lacks pp. 27-46). Contemporary mottled calf, spine gilt, red morocco lettering piece (extremities and joints very worn). FIRST EDITION. NLM/Blake p.189. -- BAYLE, Franois. Institutiones physicae ad usum scholarum accomodatae. Toulouse: J. Paul Douladore (Vol. I); Bernard Guillemette (Vol. II), 1700. 2 volumes (of 3), 4o (228 x 177 mm). 7 folding woodcut plates in Vol. I, 4 in Vol. II, woodcut text illustrations. (Lacking pp. 353-354 in vol. II). Contemporary blindstamped Dutch vellum (spine slightly spoiled). FIRST EDITION. (5)