Berne et Lausanne, Sociétés Typographiques, 1778. Large 8vo. Contemp. hcalf. Raised bands, title-and tomelabels with gilt letterint. Small nicks to leather at lower compertment. Corners bumped. Some scratches to coverpaper. Engraved portrait of D'Alembert as frontispiece. (4),CIV,784 pp. and 4 folded tables. Internally clean and fine, printed on good paper.