FARADAY, Michael (1791-1867). Experimental researches in electricity. London: R. & J. Taylor, 1844. 8o (224 x 141 mm). Text illustrations, 5 plates by J. Basire and J. Taylor, 2 folding (some light spotting). Original green publisher's cloth binding, gilt-lettered spine, uncut (rebacked). Provenance: Charles V. Walker, F.R.S. (1812-1882), electrical engineer (tipped in presentation note dated 1844 in Faraday's hand "Royal Institution 7 Nov. 1866 My dear Sir I hasten to thank you for your valuable work. It will take some reading and thinking. Allow me to send you a copy of the last volume of my papers which is just out of Mr Taylor's hands Ever truly yours, M. Faraday C.V. Walker Esqr"; armorial bookplate). FIRST EDITION, PRESENTATION COPY. Norman 763. -- Observations on mental education. London: J.W. Parker [1854]. 8o (190 x 126 mm). Offprint from Lectures on Education delivered at the Royal Institution of Great Britain (London: J.W. Parker, 1854). Original brown printed wrappers (minor wear). Modern cloth box. Provenance: Geoffrey Jefferson (bookplate). FIRST EDITION, offprint issue. Faraday gave over 100 lectures at the Royal Institution, and "part of the growing support for science in Victorian England may legitimately be attributed to the efforts of Faraday ... to popularize science among those with influence in government and the educational establishment". Jeffreys 415 (not noting the separate offprint); Norman 764. (2)