ROUSSEAU, Jean-Jacques

4to: [4]-159-[1]-xi pp. (lacking pp. i-iv), 65 plates. Ill. (complete) with a b/w stipple-engraved vignette on title and 65 plates protected by tissue guards, stipple-engraved by Bouquet, Jacques Chailly, Mlle Delelo and others after Pierre-Joseph Redouté (1759-1840), printed in colour by Langlois and finished by hand. Beautiful plates representing flowers but also fruit, roots, stalks, etc. (faintly brown. and fox., edges sl. brown., bad marg. cutting affecting p. 117). Contemp. half red morocco, gilt floral tools on flat spine. Good hardly trimmed copy (35,5 x 25 cm). 1st separate edition (1st posthumous in ""Oeuvres"" 1782) and 4to copy (a folio ed. also exists), containing a collection of botanical letters to various persons, an ""Introduction"" and ""Fragments pour un dictionnaire des termes d'usage en botanique