Letter, from Thomas Maclear to Sir John Herschel, dated at Royal Observatory, Cape of Good Hope Autograph letter signed by sender. Sends report on [N. L.] Lacaille's Observatory Stations. Tells of expeditions to Klipfontein. Lack of observing due to absence at Cape. Mural circle must be corrected or replaced. Needs an equatorial telescope. Agrees theodolite telescope would be useful. 21 September 1838