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.
