CATALOGUE OF SCIENTIFIC BOOKS 



The Gas Analyst's Manual. By F. W. HARTLEY, 



Assoc. Inst. C.E., etc. With numerous illustrations. Crown 8vo, 

 cloth, 6s. 



Gas Measurement and Gas Meter Testing. By 



F. W. HARTLEY. Fourth edition, revised and extended. Illustrated, 

 crown 8vo, cloth, 4^. 



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, 6d. 



Hops, their Cultivation, Commerce, and Uses in 



various Countries. By P. L. SiMMONDS. Crown 8vo, cloth, 4^. 6d. 



A Practical Treatise on the Manufacture and Distri- 

 bution of Coal Gas. By WILLIAM RICHARDS. Demy 4to, with numerozis 

 wood engravings and 29 plates, cloth, 28^. 



SYNOPSIS OF CONTENTS : 



Introduction History of Gas Lighting Chemistry of Gas Manufacture, by Lewis 

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

 G. R. Hislop, Esqrs. Retorts, Iron and Clay 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 

 Wrpught-iron Specifications Gas Holders Station Meter Governor Distribution 

 Mains Gas Mathematics, or Formulas 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 Descriptive 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 are 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, %vith 21 plates. 2 vols., cloth, los. 6d. 



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, $s. 



The Principles of Graphic Statics. By GEORGE 



SYDENHAM CLARKE, Capt. Royal Engineers. With 112 illustrations. 

 4to, cloth, I2s. 6d. 



