[Mathematics] Organum mathematicum libris IX explicatim à P. Gaspare Shotto.

(...) Modo novo ac facili traduntur. (...) D, Joanni Casparo (...) opus posthumum. Wurzberg, J.A. Endter etc., 1668, (34),858,(9) p., with engraved portrait of D. Carolus Josephus, frontispiece portrait of D. Ioannem Casparus, 64 (folding) engraved plates and 25 (folding) letterpress tables, engraved and letterpress illustrations in the text, bound in modern leather in old style, (antiquely) speckled edges, 4to.

Plate facing p. 85 is loose, several other plates tender; marginal reinforcements with tape at the beginning. Good copy of the relatively rare, posthumously published first edition. Gaspard Schott (1608-1666) was a student and assistant of Athanasius Kircher. The "Organum mathematicum" is an early calculator based on an invention by Napier.