Correspondence and printed papers on astrology, chemistry, chronology, electricity, galvanism, geography, geology, optics and tides. The correspondents include, among others, M. Faraday, H. Malden, E.W. Brayley, J. Challis, H.H. Turner, W. White, J.W. Bosanquet, J.R. Hind, W.M. Leake, E. Garbett, A.R. Clark, E. Sabine, C.V. Walker, J.S. Henslow, C.P. Smyth, E. Dunkin, C. Brooke, A.B. Beechy and F. Beaufort. The material includes a paper by M. Faraday 'On Electric Induction'; papers by F. Zantedeschi on galvanic currents and on Palaggi's electrostatic principle; a paper by Airy 'On the Deluge', in manuscript and printed form; a newspaper account of D. Livingstone's journey in South Africa; a paper on the Blackheath Caverns; a paper by F. Zantedeschi titled 'La Termocrosi Di Melloni'; a paper by M. Porro on a monocular; a newspaper cutting on the tides in the Pacific Ocean; a paper on the tides at Cat Island and in the Bay of Fundy; and papers, printed correspondence and a map of the development along the River Tyne.