HUME, DAVID. An Enquiry concerning the Principles of Morals. [8], 253, [3] pages, including half-title, errata leaf, and 3 pages of ads at end. 12mo, 165x98 mm, contemporary calf, rubbed, front joint cracked at top; contents toned with occasional foxing or browning, dampstaining in lower outer corners at beginning and end. Later inscription of the Caslon Society on front free endpaper; 20th-century catalogue cutting mounted on front pastedown; 1/4 morocco slipcase. London: A. Millar, 1751