Letter, from Thomas Maclear to Sir John Herschel, dated at Royal Observatory, Cape of Good Hope Autograph letter signed by sender. C. P. Smyth will deliver the micrometer series John Frederick William Herschel lent him for examining the values of the transit level scale; comments on this. Had another peep at the stars John Frederick William Herschel mentioned and still finds Argus larger than Rigel. The tent fills Mrs. De Witt's yard. She is a friend and correspondent of Charles Grant (Baron Glenelg). 28 January 1838