Letter, from Thomas Maclear to Sir John Herschel, dated at Royal Observatory, Cape of Good Hope Autograph letter signed by sender. Has had four men working on the Dome to complete it before the bad weather. Has not heard who has been appointed to Madras. The candidate from the Cape is in financial difficulties. Tide reductions are progressing. Outlines the disturbances caused by the expected arrival of the convicts. 22 July 1849