First editions, Parte Prima (1731) + Parte Seconda (1732). 2 volumes bound as 1 in contemporary vellum-backed patterned boards, gilt-stamped tinted spine label. [8], 306, [1 blank]; 332, 25 folding ill, [2]. Complete. With engraved title vignettes (in repetition), and engraving of the Soranzo coat of arms adorned by leopards and motto "capio aut quiesco," crowning the dedication. 25 folding copper plates adorned with fashionably disembodied eyes and hands in diagrams of perspective, force and motion, a host of astronomical bodies, vignettes of explosions and revelations.

In Very Good condition with minor rubbing to the boards; occasional faint discoloration and lingering signs of moisture exposure, but the volume is bright and crisp, particularly the plates. A rare physics text which addressed the modern scholarship of Sir Isaac Newton and Gottfried Wilhelm Leibniz alongside the work of Copernicus, Galileo, Kepler, and Descartes. Riccardi I, 385 - Jöcher I, 2204