Letter, from Joseph Johann Littrow to Sir John Herschel, dated at Vienna Autograph letter signed by sender. Thanks for books. Presumes Robert Molyneux has received payment for clock; this is a very good instrument, much better than [Thomas?] Young's. Encloses a work of his own, which he would like to see in the Transactions of the Royal Astronomical Society Sends propositions by a young Bavarian named K. W. Feuerbach. 17 November 1823