The Correspondence of John Flamsteed: The First Astronomer Royal, Volume Two contains the letters Flamsteed wrote and received from June 1682 to the spring of 1703. A leading figure in the final phases of the seventeenth-century scientific revolution, his extensive correspondence with 129 British and foreign scholars touches on many of the scientific discussions of the day. Some of these exchanges involved established correspondents, chiefly Newton and Wallis, but members of a younger generation, such as Stephen Gray, William Derham, and Abraham Sharp, appear with increasing frequency, especially after 1700.