Faraday as a discoverer / John Tyndall and Keith Gordon Irwin. Tyndall, John. 1820-1893. Irwin ,Keith Gordon. Faraday, Michael, 1791-1867. Faraday. QC16.F2 T9 1961 925 TYF First published 1868. Includes bibliographical references. New York : Crowell , c1961. c1961. 1961 Text xvii, 213 p. : eng