S> CATALOGUE OF SCIENTIFIC BOOKS 



Treatise on Valve-Gears, with special consideration 



of the Link-Motions of Locomotive Engines. By Dr. Gustav Zeuner, 

 Professor of Applied Mechanics at the Confederated Polytechnilcum of 

 Zurich. Translated from the Fourth German Edition, by Professor J. F. 

 Klein, Lehigh University, Bethlehem, Pa. Illustrated, 8vo, cloth, I2j. 6(/. 



The French- Polisher s Manual. By a French- 



Polisher; containing Timber Staining, Washing, Matching, Improving, 

 Painting, Imitations, Directions for Staining, Sizing, Embodying, 

 Smoothing, Spirit Varnishing, French-Polishing, Directions for Re- 

 polishing. Third edition, royal 32mo, sewed, M. 



Hops, their Cultivation, Commerce, and Uses in 



various Countries. By P. L. SiMMONDS. Crown 8vo, cloth, 4J. dd. 



A Practical Treatise on the Manufacture and Distri- 

 bution of Coal Gas. By William Richards. Demy 410, with numerous 

 wood engravings and 29 plates, cloth, 2is. 



Synopsis of Contents : 



Introduction — History of Gas Lighting — Chemistry of Gas Manufacture, by Xewis 

 Thompson, Esq., M.R.C.S. — Coal, with Analyses, by J. Paterson, Lewis Thompson, and 

 G. R. Hislop, Esqrs. — Retorts, Iron and Cl^y — Retort Setting — Hydraulic Main — Con- 

 densers — Exhausters — Washers and Scrubbers — Purifiers — Purification — History of Gas 

 Holder — Tanks, Brick and Stone, Composite, Concrete, Cast-iron, Compound Annular 

 Wrought-iron — Specifications — Gas Holders — Station Meter — Governor — Distribution — 

 Mains — Gas Mathematics, or Formulae for the Distribution of Gas, by Lewis Thompson, Esq. — 

 Services — Consumers' Meters — Regulators — Burners — Fittings — Photometer — Carburization 

 of Gas — ^Air Gas and Water Gas — Composition of Coal Gas, by Lewis Thompson, Esq. — 

 Analyses of Gas — Influence of Atmospheric Pressure and Temperature on Gas — Residual 

 Products — Appendix — Description of Retort Settings, Buildings, etc., etc. 



Practical Geometry., Perspective., and Engineering 



Drawing; a Course of DescriiDtive Geometry adapted to the Require- 

 ments of the Engineering Draughtsman, including the determination of 

 cast shadows and Isometric Projection, each chapter being followed by 

 numerous examples ; to which arte added rules for Shading, Shade-lining, 

 etc., together with practical instructions as to the Lining, Colouring, 

 Printing, and general treatment of Engineering Drawings, with a chapter 

 on drawing Instruments. By George S. Clarke, Capt. R.E. Second 

 edition, with 21 plates. 2 vols.,' cloth, loj-. dd. 



The Elements of Graphic Statics. By Professor 



Karl Von Ott, translated from the German by G. S. Clarke, Capt. 

 R.E., Instructor in Mechanical Drawing, Royal Indian Engineering 

 College. With 93 illustrations, crown 8vo, cloth,''5J. 



The Principles of Graphic Statics. By George 



Sydenham Clarke, Capt. Royal Engineers. With 112 illustrations. 

 4to, cloth, I2J-. dd. 



Dynamo-Electric Machinery : A Manual for Students 



of Electro-technics. By Silvaxus P. Thompson, B.A., D.Sc, Professor 

 of Experimental Physics in .University College, Bristol, etc., etc. /llus- 

 irated, Svo, cloth, 12s. 6d. 



