SummaryA heretofore overlooked response to Galileo's 1638 Discorsi is described by examining two extant copies of the text which are heavily annotated. It is first demonstrated that these copies contain annotations made by Seth Ward and Sir Christopher Wren. This article then examines one feature of Ward's and Wren's responses to the Discorsi, namely their decision to re-write several of Galileo's geometrical demonstrations into the language of symbolic algebra. It is argued that this type of active reading of period mathematical (...) texts may have been part of the regular scholarly and pedagogical practices of early modern British mathematicians like Ward and Wren. A set of Appendices contains a transcription and translation of the analytical solutions found in these annotated copies. (shrink)

Summary This contribution examines the history of the production of Galileo's 1638 Discorsi. It provides a detailed narrative of Galileo's and his collaborators' attempts to secure a printer for the work. Through analysis of surviving correspondence, manuscripts, and proof copies, I examine in greater detail the working methods of Galileo and his correspondents, particularly in regards to the text's images. This examination serves as a boon to historians of the early modern book, as Galileo's surviving correspondence provides an unusually rich (...) record of his and his collaborators' activities. I show that the volume was produced through a collaborative process in which Galileo's correspondents played a significant role in determining the work's layout, images, and content. The study thus complements the claims of previous scholars, who have argued for the collaborative nature of much of Galileo's intellectual work. It also offers a new perspective on the Discorsi, a text which is often studied for insight into Galileo's process of discovery. (shrink)