Copy letter, from Sir John Herschel to Walter Forman, 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. Walter Forman's manuscript, which John Frederick William Herschel returned with his letter of 1831-6-16, has not been received by Walter Forman. John Frederick William Herschel suggests some possibilities as to what might have happened, and deplores the tone of Walter Forman's letters, indicating that this tone causes John Frederick William Herschel to decline further correspondence on the subject. 28 July 1831