A Course of Descriptive Geometry, adapted for the requirements of the Engineering Draughtsman, including the Determination of Cast Shadows and Isometric Projection, each chapter being followed by numerous Examples. To the above are added Rules for Shading, Shade-Lining, &c., together with practical Instructions as to the Lining, Colouring, Printing, and general Treatment of Engineering Drawings. By GEORGE S. CLARKE, Lieut. Royal Engineers, Instructor in Mechanical Drawing, Royal Indian Engineering College, Coopers Hill. Third Edition, 8vo, sewed, 1_s._ 6_d._ _The Liverpool Waterworks_. By CHARLES M. BELOE, M. Inst. C.E., Author of the 'Construction of Catch-Water Reservoirs.' Crown 8vo, cloth, 7_s._ 6_d._ _Dry Rot_. A Treatise on the Origin, Progress, Prevention, and Cure of Dry Rot in Timber, Remarks on the Means of Preserving Wood from Destruction by Sea-Worms, Beetles, Ants, &c. By THOMAS ALLEN BRITTON, late Surveyor to the Metropolitan Board of Works, &c., &c. To be completed in 12 Monthly Parts, 4to, sewed, 5_s._ each, Parts I. to V. now ready. _Mining Engineering_. A Practical Treatise on Coal Mining. By G. G. ANDRÉ, F.G.S., Mining Civil Engineer, Member of the Society of Engineers. With Plates of Practical Drawings. Foolscap 8vo, cloth, 6_s._ _Slide Valve._--_On Designing Valve Gearing._ By EDWARD J. COWLING WELCH, Memb. Inst. Mechanical Engineers. With Diagrams. London: E. & F. N. SPON, 48, Charing Cross. New York: 446, Broome Street. CATALOGUE OF BOOKS RELATING TO PRACTICAL SCIENCE PUBLISHED AND SOLD BY E. & F. N. SPON. LONDON: 48, CHARING CROSS. NEW YORK: 446, BROOME STREET. =Architects' Handbook=. A Handbook of Formulæ, Tables, and Memoranda, for Architectural Surveyors and others engaged in Building, by J. T. Hurst, C.E., tenth edition, thoroughly revised and re-written, royal 32mo, roan 5 0 =Andre's Handbook of Mapping=. Containing Instructions for the Preparation of Engineering, Architectural, and Mechanical Drawings, _with numerous coloured examples_, crown 4to, cloth 15 0 =Blast-Furnace=. Researches on the Action of the Blast-Furnace, by Charles Schintz, translated from the German by W. H. Maw, and Moritz Müller, _plates_, crown 8vo, cloth 8 6 =Bridges=. Estimates and Diagrams of Railway Bridges for Turnpike, Public and Occupation Roads, in the Embankments of Double or Single Lines, and Cuttings of Double Lines, with Form for Calculating Quantities in Skew Structures, etc.; also Culverts of various dimensions, and at Station Buildings, by J. W. Grover, M.I.C.E., second edition, enlarged, _with 37 coloured plates_, folio, cloth 31 6 =Bridges=.