1. On the Old and New Laboratories at the Royal Institution
*
2. Tyndall , J. 1868. Faraday as a Discoverer 103–103. London
3. Roscoe , H.E. 1906. Life and Experiences of Sir H. E. Roscoe 139–139. London
4. Huxley , L. 1903. Life and Letters of T. H. Huxley Vol. i, 167–167. London Letter dated 25 February 1853