ROMÉ DE l' ISLE, Jean Baptist Louis de. Essai de Cristallographie; ou Description des Figures Géométriques, Paris, chez Didot jeune, Knapen & Delaguette, 1772, 8°, FIRST EDITION, 10 folding engraved plates, 2 folding letterpress tables, half title and blank A1 (lacking 2D8, blank, some worming of margins), contemporary mottled calf, spine gilt (joints and corners rubbed). [Sotheran I, 4061: "Rare, this important work first demonstrated the law of constancyy of angles in crystallography"; Honeyman Pt. VI, lot 2681]