ix + 559 pp and x + 591 pp. Volume I is Reports on Subjects I, II and II; vol. II includes Sujets IV, V et VI. The reports are in the language of the individual reporter, primarily French, English and German. Tan linen cloth with dark brown are handsome, just a bit of wear at spine tips and board corners, interiors have "received" stamps on end papers, Vol. II pages 7-10 have small chip at bottom edge, otherwise clean and unmarked. Nice set.; 8vo - over 7¾" - 9¾" tall