Copy letter, from Sir John Herschel to William Parsons (Lord Rosse), dated at 32 Harley St. Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Declines William Parsons, Lord Rosse's request that John Frederick William Herschel write an obituary notice of François Arago. Agrees R.S.L. should publish such. Suggests [Charles] Wheatstone as author. 9 November 1853