Copy letter, from Sir John Herschel to Roderick Impey Murchison, dated at Collingwood Copy letter in John Herschel's hand. On fitness of Michael Faraday, as a chemist and physicist, to chair B.A.A.S. section. Remarks on [H. C.] Oersted's identifying electricity and magnetism, and connection between Oersted's and Faraday's work. Further comments on Faraday's work, and on instances of rash observation ultimately proving correct. 2 September 1846