Copy letter, from Sir John Herschel to William Whewell, dated at Collingwood Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Working on double star orbits. Responds to William Whewell's question [see William Whewell's 1845-8-20] about proper mathematical education at Cambridge, for the most part agreeing with William Whewell's preference for classical works. 5 October 1845