STENO, Nicolaus [Niels Stensen] (1636-1686). Opera Philosophica, edited by Vilhelm Maar, Copenhagen: Vilhelm Tryde, 1910, 2 volumes, 4°, number 136 of 350 copies, plates and illustrations (library markings), contemporary morocco-backed boards (rubbed), original wrappers bound in, t.e.g. -- Domenico Maria MANNI. Vita del Niccolò Stenone di Danimarca, Florence: Giuseppe Vanni, 1775, 4° (half title repaired, title holed at outer margin), 19th-century half vellum, uncut. (3)