Copy of a letter, from John Frederick William Herschel to Francis Baily, dated at Slough Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Finds that he is unable to attend the Council Meeting so would Francis Baily take the chair. Business to be brought before council. Ernesto Capocci has seen a spot on the sun. 9 April 1839