Correspondence of Isaac Newton 7 Volume Paperback Set – serie

This fourth volume covers the period which was probably the most varied of Newton's whole career. The Principia had already established Newton as the world's foremost mathematician and natural philosopher. In spite of the abstruse nature of the mathematical treatment adopted in its pages, the first edition was rapidly exhausted and, within a very few years, Newton was being urged to consider the preparation of the second edition. This was to contain, inter alia, his further researches upon the motion of the Moon, the solar system, and the behaviour of the comets. Not until 1694, however, did his thoughts upon this project assume definite shape. To carry out his plan, he had need of the most accurate observations available, and for these he turned to the Observatory at Greenwich, where John Flamsteed had been installed as King's Astronomer. So came about that close association between the two men which was to last for many years, though not without frequent interruptions.

This fifth volume presents the surviving correspondence from the period of almost four years which is, from a bibliographical point of view, the most important time in Newton's life: with Roger Cotes, Newton revised his Philosophise Naturalis Principia Mathematics and saw it through the press. Considered as a single group of letters, the Newton-Cotes correspondence is the largest and most important section of Newton's scientific correspondence that we have. Nowhere else can one witness Newton in a detailed debate about scientific argument and scientific conclusions - a debate from which he did not always emerge victorious. Nowhere else does Newton write in detail about the text of the Principia. And all scholars agree that this text which was hammered out between Cotes and Newton was the most important of all versions, printed and unprinted; this was (to all intents and purposes) the Principia of subsequent history.

As Newton had by now entered his eighth decade, it can be no surprise that the correspondence in this sixth volume shows a marked decline in his activity and intellectual vigour. While the number of extant letters written by him on other that Mint business is relatively small, the majority of them are devoted to his controversy with Leibniz - Newton's dominant interest during this period. The correspondence of Newton shades gradually into the correspondence of the Newtonians. Thus notably Keill, De Moivre, Chamberlayne, Brook Taylor, the Abbe Conti and Des Maizeaux interested themselves in the calculus dispute, all of them (except the first) having frequent opportunities for personal conversation with Newton.

In this seventh and final volume the letters are divided into two quite distinct groups. The first group begins with the remaining letters of the main chronological sequence written during the closing years of Newton's life, and then proceeds to those few letters to which there is no assignable date with any certainty. The second group of letters, placed in Appendix I, contains corrections and additions to the letters printed in the earlier volumes of the Correspondence. A genealogical table is added to Appendix II to help the reader through the intricacies of Newton's family tree. Even after the creative power of his genius had deserted him, Newton retained to the very end of his long life the characteristic clarity of his thought. Few of Newton's letters in this volume may justly be described as scientific. The relative inactivity of the Mint meant that, although he apparently delegated few of his responsibilities to others, Newton's concerns there were no onerous. Thus it is not surprising that in the last nine years of his life (the period covered in this volume), and particularly from 1725 onwards, there was a decrease in Newton's output of letters; but those which he did write remain as lucid as ever.

This second volume contains the first exchange of letters between Newton and Leibniz, which took place through the intermediacy of Oldenburg, as well as the beginning of Newton's correspondence of Flamsteed, which resulted from their common interest in the comet of 1680. Of prime interest is the correspondence with Halley, whose compelling zeal and energy played such a part in persuading Newton to write the Principia. This great work was published about midsummer 1687. As early as New Year 1684/5 it was known in some quarters that Newton was busying himself with applying his laws of motion to problems of celestial mechanics, for at that time Flamsteed wrote (Letter 275): 'if you will give me leave to guesse at your designe I beleive you are endeavoring to define ye curve yt ye comet in ye aether from your Theory of motion'.

This third volume covers the period from December 1688 to August 1694. In January 1688/9 Newton was elected one of the representatives of the University of Cambridge in the Convention Parliament, and much of his time was taken up in dealing with his new responsibilities, as may be gathered from his correspondence with Covel, Vice-Chancellor of the University. The letters in question, which were printed in collected form in 1848, provide a picture of the unsettled period which followed the flight of King James II to the court of Louis XIV, and the landing of William, Prince of Orange, on English soil on 5 November 1688. In 1689 there was a possibility of Newton being appointed to the Provostship of King's College, Cambridge, but the only reference in the Correspondence is to be found in Letter 377.