Letter, from Thomas Maclear to Sir John Herschel, dated at Royal Observatory, Cape of Good Hope Autograph letter signed by sender. Was agreeably surprised by the communication in Lady Herschel's letter; did not expect any pension. Outlines his ideas for careers for some members of his own family. India and the Services seem the best propositions. Does not expect much from the observations of Venus in Chile unless the definition is good. 17 November 1850