Copy of draft letter, from Sir John Herschel to W. B. Clegram, dated at Collingwood Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Regrets that he thinks the faith of the public in astronomy should be shaken by the errors of J. C. Symons. Gives the theory of the rotation of the moon. 8 January 1857