Miscellaneous works and calculations regarding engineering, including J. Fowler's calculations on a road-bridge; strains on bridges; Airy's views on suspension bridges; a proposed safety railway; C. Fay on a continuous railway brake; an article from 'The Chester Chronicle' on the Great Channel Tunnel; a report, with drawings, on a safety steam boiler; a rainfall chart; a sketch of a rotary valve, with a paper model; R. John's surveying stand; the preservation of ship's timber; the notices, awards and proceedings of the Institution of Civil Engineers; experiments on the resistance of air to projectiles, including work on the Bashforth chronograph; a report on steam fire engines; a theory by T. Adams of new motive power, with plans; a facsimile of J.F.W. Herschel's suspension roof; an article from 'The Times' on the Suez Canal; reports on irrigation in India; C. Brooke's paper on 'negative fluid pressure on a given surface'; and J.F. Bourne's 'Whirle wheel star pointer'. The correspondents include, among others, C.P. Smyth (on the Great Pyramid), E.J. Stone, E.J. Routh, A.P. Ryder, E. Loomie, A. de Morgan, J.F.W. Herschel, F. Bashforth, J.C. Adams, G.G. Stokes, C.B. Vignoles and I.K. Brunel.