London: Rousseau, 1815. hardcover. 4 volumes. Illustrated with engraved plates. Thin 12mo, finely bound in 19th Century full dark blue calf; elaborate gilt- decorated spines with raised bands, gilt borders and inner dentelles, a.e.g. Some scattered light foxing, else near fine. Londres: (J.J. Rousseau), no date, circa 1815. very good.