MERSENNE, Marin. Harmonicorum libri XII in quibus agitur de sonoroum natura, causis, et effectibus de consonantiis ... orbísque totius harmonicis instrumentis ... editio aucta, Paris: Guillelmo Baudry, 1648, 2 parts in one, 2°, title in red and black with printer's device, numerous woodcut illustrations, some full-page ([?] lacking a1, first and last few leaves detached, browned, some margins brittle, a few stains), old calf (worn).