“Cannot fail to prove practically serviceable to those for whom they have been designed.”--_Scotsman_. * * * * * Second Edition, Cloth, 8s. 6d. Leather, for the Pocket, 8s. 6d. =GRIFFIN’S ELECTRICAL PRICE-BOOK:= For Electrical, Civil, Marine, and Borough Engineers, Local Authorities, Architects, Railway Contractors, &c., &c. Edited by H. J. Dowsing. “The Electrical Price-book REMOVES ALL MYSTERY about the cost of Electrical Power. By its aid the EXPENSE that will be entailed by utilising electricity on a large or small scale can be discovered.” --_Architect_. =By WILLIAM NICHOLSON.= * * * * * =SMOKE ABATEMENT.= (_See page 76_.) * * * * * =LONDON: CHARLES GRIFFIN & CO., LIMITED, EXETER STREET, STRAND.= * * * * * Shortly. Second Edition. Large 8vo, Handsome Cloth. With Illustrations, Tables, &c. LUBRICATION & LUBRICANTS: A TREATISE ON THE =THEORY AND PRACTICE OF LUBRICATION= AND ON THE NATURE, PROPERTIES, AND TESTING OF LUBRICANTS. By LEONARD ARCHBUTT, F. I. C., F. C. S., Chemist to the Midland Railway Company, AND R. MOUNTFORD DEELEY, M.I.Mech.E., F.G.S., Chief Locomotive Superintendent, Midland Railway Company. Contents.--I. Friction of Solids.--II. Liquid Friction or Viscosity, and Plastic Friction.--III. Superficial Tension.--IV. The Theory of Lubrication.--V. Lubricants, their Sources, Preparation, and Properties.--VI. Physical Properties and Methods of Examination of Lubricants.--VII. Chemical Properties and Methods of Examination of Lubricants.--VIII. The Systematic Testing of Lubricants by Physical and Chemical Methods.--IX. The Mechanical Testing of Lubricants. --X. The Design and Lubrication of Bearings.--XI. The Lubrication of Machinery.--Index. “Destined to become a CLASSIC on the subject.”--_Industries and Iron._ “Contains practically ALL THAT IS KNOWN on the subject. Deserves the careful attention of all Engineers.”--_Railway Official Guide._ * * * * * Fourth Edition. _Very fully Illustrated. Cloth, 4s. 6d._ STEAM-BOILERS: =THEIR DEFECTS, MANAGEMENT, AND CONSTRUCTION.= By R. D. MUNRO, _Chief Engineer of the Scottish Boiler Insurance and Engine Inspection Company._