GRASSI, Orazio (1583-1654). Ratio Ponderum Librae et Simbellae. Naples: Matthaeus Nuccius, 1627. 4° (214 x 150mm). Engraved device on title and one engraved plate. (Waterstaining throughout, mainly marginal, heavier at start and affecting corner of plate and few letters of title, occasional browning and spotting.) Contemporary vellum, manuscript title on spine (some staining and wear). Provenance: contemporary inscription on title.
FIRST ITALIAN EDITION, RARE; only 4 copies recorded in Italian libraries and no records appear on ABPC in over 35 years. The first edition was published in Paris in 1626. Grassi previously published another work, Disputatio Astronomica, to which Galileo replied with Discorso delle Comete of Mario Guiducci; Grassi then wrote Libra Astronomica Ac Philosophica and Galilei answered with the Saggiatore. In this work Grassi replies once again pointing out that Galileo is not capable of speaking Latin and doesn't know the buoni costumi; he even asks himself if it was really Galileo who invented the telescope. Carli-Favaro, p. 24; Cinti 80.