Copy letter, from Sir John Herschel to William Henry Smyth Incomplete letter in John Herschel's hand. Has heard William Henry Smyth is publishing an English translation of François Arago's astronomical writings. Urges against including Arago's lectures if the Italian translation is indicative of their level of accuracy. Lists numerous errors in that edition. [Marked 'not sent.' Note added to CDraft (RS:HS 25.13.13) states: 'A letter differently worded but noting some of these points, but not all (for particular reasons) if I remember right was sent.' 8 November 1857