Copy letter, from Sir John Herschel to William Whewell Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Alerts William Whewell that F. W. Bessel, in very poor health, will attend the Manchester B.A.A.S. meeting. John Frederick William Herschel plans to bring Bessel to Collingwood after the meeting. June 1842