Copy letter, from Sir John Herschel to William Whewell, dated at Collingwood Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Discusses revisions in William Whewell's and Frederick Beechey's papers in John Frederick William Herschel's Admiralty Manual. Also comments on drafting Outlines Astr., the controversy over the discovery of Neptune, and William Lassell's discovery of a new Saturnian satellite. 30 September 1848