NEWTON, Isaac (1642-1727). Opera quae exstant omnia, edited by Samuel Horsley, London: excudebat Joannes Nichols, 1779-85, 5 volumes, 4°, 32 folding engraved plates only (of 34), diagrams in text (lacking 2 plates in vol. IV, library markings, half title to vol. II cleanly-torn, ink spots to preliminaries of vol. III), mixed bindings, vols. I & V: library buckram, volumes II-IV contemporary calf (covers detached, spines of vols. III and IV broken). [Babson 8; Brunet IV, 48; Wallis I] (5)