Letter, from William Henry Sykes to Sir John Herschel, dated at India House Autograph letter signed by sender. Requests a letter fro mHershcel ascertaning William Mann, the Assistatn Astronomer at the Cape's competence and, assuring his hiring as Astronomer at Madras. A draft answer is written on the reverse of this letter in from Sir John Herschel in which he writes to the best of his knowledge about William Mann's competence in various areas. 17 January 1848