Letter, from Bertie Greatheed to Sir John Herschel, dated at 17 Lower Brook St. Autograph letter signed by sender. Has seen William Artaud, who will be pleased to paint William Herschel's picture. Will undertake it in the new year as he is rather pressed for time at the moment. Hears that J. C. Ross and W. E. Parry have returned from the North. 19 November 1818