Copy letter, from Sir John Herschel to John Pond, 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. Provides a detailed critique of a mathematical paper by [J. M. H.] Wronski, which John Pond presented on Wronski's behalf to the Royal Society [of London] Suggests that John Pond urge Wronski to withdraw the paper. 29 October 1821