Copy of incomplete letter, from Sir John Herschel to William Henry Smyth, dated at [Collingwood] Copy of an incomplete letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Claims if he had known certain informations concerning discovery of Neptune, he would have ranked J. C. Adams's claim equal with U. J. J. Leverrier's. 3 February 1860