_A Treatise on a Practical Method of Designing Slide-Valve Gears by Simple Geometrical Construction_, based upon the principles enunciated in Euclid’s Elements, and comprising the various forms of Plain Slide-Valve and Expansion Gearing; together with Stephenson’s, Gooch’s, and Allan’s Link-Motions, as applied either to reversing or to variable expansion combinations. By EDWARD J. COWLING WELCH. Memb. Inst. Mechanical Engineers. Crown 8vo, cloth, 6_s._ _Cleaning and Scouring_: a Manual for Dyers, Laundresses, and for Domestic Use. By S. CHRISTOPHER. 18mo, sewed, 6_d._ _A Handbook of House Sanitation_; for the use of all persons seeking a Healthy Home. A reprint of those portions of Mr. Bailey-Denton’s Lectures on Sanitary Engineering, given before the School of Military Engineering, which related to the “Dwelling,” enlarged and revised by his Son, E. F. BAILEY-DENTON, C.E., B.A. _With 140 illustrations_, 8vo, cloth, 8_s._ 6_d._ _A Glossary of Terms used in Coal Mining._ By WILLIAM STUKELEY GRESLEY, Assoc. Mem. Inst. C.E., F.G.S., Member of the North of England Institute of Mining Engineers. _Illustrated with numerous woodcuts and diagrams_, crown 8vo, cloth, 5_s._ _A Pocket-Book for Boiler Makers and Steam Users_, comprising a variety of useful information for Employer and Workman, Government Inspectors, Board of Trade Surveyors, Engineers in charge of Works and Slips, Foremen of Manufactories, and the general Steam-using Public. By MAURICE JOHN SEXTON. Second edition, royal 32mo, roan, gilt edges, 5_s._ _The Strains upon Bridge Girders and Roof Trusses_, including the Warren, Lattice, Trellis, Bowstring, and other Forms of Girders, the Curved Roof, and Simple and Compound Trusses. By THOS. CARGILL, C.E.B.A.T., C.D., Assoc. Inst. C.E., Member of the Society of Engineers. _With 64 illustrations, drawn and worked out to scale_, 8vo, cloth, 12_s._ 6_d._ _A Practical Treatise on the Steam Engine_, containing Plans and Arrangements of Details for Fixed Steam Engines, with Essays on the Principles involved in Design and Construction. By ARTHUR RIGG, Engineer, Member of the Society of Engineers and of the Royal Institution of Great Britain. Demy 4to, _copiously illustrated with woodcuts and 96 plates_, in one Volume, half-bound morocco, 2_l._ 2_s._; or cheaper edition, cloth, 25_s._