Correspondence and papers on various scientific topics. The papers begin with work on electricity and magnetism, including W. Thomson's transfer of galvanic currents; J. Tyndall's lecture on magnetic repulsion delivered to the Royal Institution; and C. Chalmers' notes on electricity. There are samples of J.C. Clark's chemical telegraph; material on I.K. Brunel's proposal of voyages to India; various barometer readings; longitudes of Paris, Lancaster, Torbay and Algeria; and a letter by D. Livingstone from 'The Cape Mercantile Advertiser'. There are also papers on the archaeological excavations made at Wissant, 1855 (in French); geological studies (in French); a 'Demonstration of Fresnel's formulas for reflected and refracted light and their application' by B. Powell; and T. Sutton's theory of the stereoscope from 'Photographic Notes', with a piece on binoculars from 'The Toronto Times'. Other works cover W.H. Miller's rainbow experiments, G. Bedford's watercolour of a triple rainbow, and discussions by Airy on the Moon, low water marks and tides. The correspondents include M. Faraday, C.F. Varley, H. James, H. Ellis, W.H. Miller, A. d'Abbadie, E.W. Brayley, B. Powell and J.W. Bosanquet.