The Correspondence of Isaac Newton. Volume VII. 1718-1727. Edited by A. Rupert Hall and Laura Tilling. Published for the Royal Society. Cambridge University Press. 1977. xlv, 522pp. Frontispiece, 2 further plates. All edges sprinkled red. A fine copy in the original burgundy cloth, gilt vignette to upper board, printed spine label in blue with gilt lettering. In the original dust wrapper, near fine, with two short closed tears to upper edge. Newton retained to the end of his extremely long life his characteristic clarity of thought. In his extensive exchanges with Varignon and Bernoulli about the calculus dispute he was preoccupied with historical arguments rather than the mathematical methods involved. In 1722, with Varignon's death, at last, came the end of the dispute. Neither Newton nor Bernoulli could sustain their argument. Henry Pemberton's letters to Newton concerning the third edition of the Principia lack the intellectual brilliance of Cotes. Correspondence relating to the investigation methods of finding longitude at sea continued. Again Newton was explicit: only two methods would prove useful, one by the motion of the moon and the other by the eclipses of the unnermost satellite of Jupiter. The recoinage at Edinburgh was over by 1709, but the problem of financing the Scottish Mint continued. Newton continually tried to restrain the Treasury from over financing the Edinburgh Mint. Disputes continued at the Tower Mint. Newton left no will on his death on 27 March 1727.