The Correspondence of Isaac Newton Volume IV 1694-1709. Edited by J. F. Scott. Published for the Royal Society at the University Press, Cambridge. 1967. Quarto. xxxii, 578pp. Mounted colour frontispiece, 6 further plates. Original burgundy cloth, gilt vignette to upper board, blue and gilt printed label to spine. In the original dust wrapper. All edges sprinkled red. A fine copy, in a near fine dust wrapper. Perhaps the most varied period of Newton's career. Newton visited Flamsteed at the Observatory at Greenwich on 1 September 1694 and so came about that close association between the two men which was to last many years. On this occasion Flamsteed showed him "about fifty positions of the Moon reduced to a synopsis" ... Newton gave him his assurance that he would not disclose this without Flamsteed's consent. Their subsequent researches and interactions brought forth an impatience and hostility exacerbated by Newton's friendship with Halley, of whom Flamsteed had developed an intense distrust and suspicion. This volume contains letters of which Newton was neither the sender nor the recipient, which to have excluded would have left serious gaps in the narrative. Flamsteed's corespondence with Wallis and Wren put into context Newton's extraordinary outburst on 6 January 1699. In 1696 Newton was appointed Warden of the Mint, and in 1705 he was knighted. On 1 May 1707 the Act of Union with Scotland came into force. The Scottish coinage was recalled, melted down and recast into English coinage. The correspondence brings to light the difficulties which resulted. The letters in this volume show that Newton was not only a man of superlative genius, but also a man of the highest principles.