Galilei, Galileo

Mathematical Discourses concerning Two New Sciences relating to Mechanicks and Local Motion, in Four Dialogues … Done into English from the Italian, by Tho. Weston, late Master, and now publish'd by John Weston, present Master, of the Academy at Greenwich. London: Printed for J. Hooke, 1730

4to (9 7/8 x 7 3/8 in.; 251 x 189 mm). Title-page printed in red and black, one engraved plate, numerous woodcut illustrations and diagrams in text, woodcut ornaments, terminal leaf of publisher's ads, pagination numbers 361–68 omitted; very light dampstaining to lower third of text block, some scattered other staining and soiling. Contemporary polished calf; rebacked and restored, rubbed.

Second edition in English of Discorsi e dimostrazioni mathematiche, first published in Leiden in 1638. Thomas Weston, whose Academy was located at Greenwich, home of the Royal Observatory, wrote his own Treatise of Arithmetick in addition to translating Galileo's work. Appended to the main text is a lengthy appendix of propositions and their demonstrations about the center of gravity of solids.