[Letter] 1822 May 26, Royal Institution, London [to A-M] Ampere, Paris / M. Faraday. [3p. on 1 leaf, holograph signed. Refers to previous correspondence of Ampere with himself and with Brewster; mentions Darblay (in London), Hachette and Laplace. Faraday receives French journals irregularly and is impatient for news, especially of Ampere's work]