Autograph letter signed, with richly scientific content relating to the ongoing debate about the shape of the Earth, from Gresham College, London, dated 22 June 1738, to the important Scottish mathematician James Stirling.
London: 1738. An autograph letter signed by John Machin (c. 1686–1751), Secretary of the Royal Society and Professor of Astronomy at Gresham College, four pages on a bifolium, written from Gresham College on 22 June 1738 to the Scottish mathematician James Stirling at Leadhills — descended in the Stirling family..... More
Item #6657