Letter, from Basil Hall to Sir John Herschel, dated at Portsmouth Autograph letter signed by sender. Describes a new form of sketch book, which may interest him. Encloses a paper from a friend, which can be answered by means of algebra, of which he himself is ignorant. John Frederick William Herschel's affairs were mentioned by Sir James Graham, who suggested that the Admiralty may be able to assist John Frederick William Herschel with a passage to the Cape. 3 September 1832