_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 Polytechnik.u.m of Zurich.

Translated from the Fourth German Edition, by Professor J. F. KLEIN, Lehigh University, Bethlehem, Pa. _Ill.u.s.trated_, 8vo, cloth, 12_s._ 6_d._

_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, 6_d._

_Hops, their Cultivation, Commerce, and Uses in various Countries._ By P. L. SIMMONDS. Crown 8vo, cloth, 4_s._ 6_d._

_The Principles of Graphic Statics._ By GEORGE SYDENHAM CLARKE, Major Royal Engineers. _With 112 ill.u.s.trations._ Second edition, 4to, cloth, 12_s._ 6_d._

_Dynamo Tenders' Hand-Book._ By F. B. BADT, late 1st Lieut. Royal Prussian Artillery. _With 70 ill.u.s.trations._ Third edition, 18mo, cloth, 4_s._ 6_d._

_Practical Geometry, Perspective, and Engineering Drawing_; a Course of Descriptive Geometry adapted to the Requirements 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, _with 21 plates_. 2 vols., cloth, 10_s._ 6_d._

_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 ill.u.s.trations_, crown 8vo, cloth, 5_s._

_A Practical Treatise on the Manufacture and Distribution of Coal Gas._ By WILLIAM RICHARDS. Demy 4to, with _numerous wood engravings and 29 plates_, cloth, 28_s._

SYNOPSIS OF CONTENTS:

Introduction--History of Gas Lighting--Chemistry of Gas Manufacture, by Lewis Thompson, Esq., M.R.C.S.--Coal, with a.n.a.lyses, by J.

Paterson, Lewis Thompson, and G. R. Hislop, Esqrs.--Retorts, Iron and Clay--Retort Setting--Hydraulic Main--Condensers--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.--a.n.a.lyses of Gas--Influence of Atmospheric Pressure and Temperature on Gas--Residual Products--Appendix--Description of Retort Settings, Buildings, etc., etc.

_The New Formula for Mean Velocity of Discharge of Rivers and Ca.n.a.ls._ By W. R. KUTTER. Translated from articles in the 'Cultur-Ingenieur,' by LOWIS D'A. JACKSON, a.s.soc. Inst. C.E. 8vo, cloth, 12_s._ 6_d._

_The Practical Millwright and Engineers Ready Reckoner_; or Tables for finding the diameter and power of cog-wheels, diameter, weight, and power of shafts, diameter and strength of bolts, etc. By THOMAS DIXON.

Fourth edition, 12mo, cloth, 3_s._

_Tin_: Describing the Chief Methods of Mining, Dressing and Smelting it abroad; with Notes upon a.r.s.enic, Bis.m.u.th and Wolfram. By ARTHUR G.

CHARLETON, Mem. American Inst. of Mining Engineers. _With plates_, 8vo, cloth, 12_s._ 6_d._

_Perspective, Explained and Ill.u.s.trated._ By G. S. CLARKE, Capt. R.E.

_With ill.u.s.trations_, 8vo, cloth, 3_s._ 6_d._

_Practical Hydraulics;_ a Series of Rules and Tables for the use of Engineers, etc., etc. By THOMAS BOX. Ninth edition, _numerous plates_, post 8vo, cloth, 5_s._

_The Essential Elements of Practical Mechanics; based on the Principle of Work_, designed for Engineering Students. By OLIVER BYRNE, formerly Professor of Mathematics, College for Civil Engineers. Third edition, _with 148 wood engravings_, post 8vo, cloth, 7_s._ 6_d._

CONTENTS:

Chap. 1. How Work is Measured by a Unit, both with and without reference to a Unit of Time--Chap. 2. The Work of Living Agents, the Influence of Friction, and introduces one of the most beautiful Laws of Motion--Chap. 3. The principles expounded in the first and second chapters are applied to the Motion of Bodies--Chap. 4. The Transmission of Work by simple Machines--Chap. 5. Useful Propositions and Rules.

_Breweries and Maltings_: their Arrangement, Construction, Machinery, and Plant. By G. SCAMELL, F.R.I.B.A. Second edition, revised, enlarged, and partly rewritten. By F. COLYER, M.I.C.E., M.I.M.E. _With 20 plates_, 8vo, cloth, 12_s._ 6_d._

_A Practical Treatise on the Construction of Horizontal and Vertical Waterwheels_, specially designed for the use of operative mechanics. By WILLIAM CULLEN, Millwright and Engineer. _With 11 plates._ Second edition, revised and enlarged, small 4to, cloth, 12_s._ 6_d._

_A Practical Treatise on Mill-gearing, Wheels, Shafts, Riggers, etc._; for the use of Engineers. By THOMAS BOX. Third edition, _with 11 plates_. Crown 8vo, cloth, 7_s._ 6_d._

_Mining Machinery_: a Descriptive Treatise on the Machinery, Tools, and other Appliances used in Mining. By G. G. ANDRe, F.G.S., a.s.soc. Inst.

C.E., Mem. of the Society of Engineers. Royal 4to, uniform with the Author's Treatise on Coal Mining, containing 182 _plates_, accurately drawn to scale, with descriptive text, in 2 vols., cloth, 3_l._ 12_s._

CONTENTS:

Machinery for Prospecting, Excavating, Hauling, and Hoisting-- Ventilation--Pumping--Treatment of Mineral Products, including Gold and Silver, Copper, Tin, and Lead, Iron, Coal Sulphur, China Clay, Brick Earth, etc.

_Tables for Setting out Curves for Railways, Ca.n.a.ls, Roads, etc._, varying from a radius of five chains to three miles. By A. KENNEDY and R. W. HACKWOOD. _Ill.u.s.trated_ 32mo, cloth, 2_s._ 6_d._

_Practical Electrical Notes and Definitions for the use of Engineering Students and Practical Men._ By W. PERREN MAYc.o.c.k, a.s.soc. M. Inst.

E.E., Instructor in Electrical Engineering at the Pitlake Inst.i.tute, Croydon, together with the Rules and Regulations to be observed in Electrical Installation Work. Second edition. Royal 32mo, roan, gilt edges, 4_s._ 6_d._

_The Draughtsman's Handbook of Plan and Map Drawing_; including instructions for the preparation of Engineering, Architectural, and Mechanical Drawings. _With numerous ill.u.s.trations in the text, and 33 plates (15 printed in colours)._ By G. G. ANDRe, F.G.S., a.s.soc. Inst.

C.E. 4to, cloth, 9_s._

CONTENTS:

The Drawing Office and its Furnishings--Geometrical Problems-- Lines, Dots, and their Combinations--Colours, Shading, Lettering, Bordering, and North Points--Scales--Plotting--Civil Engineers'

and Surveyors' Plans--Map Drawing--Mechanical and Architectural Drawing--Copying and Reducing Trigonometrical Formulae, etc., etc.

_The Boiler-maker's and Iron Ship-builder's Companion_, comprising a series of original and carefully calculated tables, of the utmost utility to persons interested in the iron trades. By JAMES FODEN, author of 'Mechanical Tables,' etc. Second edition revised, _with ill.u.s.trations_, crown 8vo, cloth, 5_s._

_Rock Blasting_: a Practical Treatise on the means employed in Blasting Rocks for Industrial Purposes. By G. G. ANDRe, F.G.S., a.s.soc. Inst.

C.E. _With 56 ill.u.s.trations and 12 plates_, 8vo, cloth, 10_s._ 6_d._

_Experimental Science_: Elementary, Practical, and Experimental Physics. By GEO. M. HOPKINS. _Ill.u.s.trated by 672 engravings._ In one large vol., 8vo, cloth, 18_s._

_A Treatise on Ropemaking as practised in public and private Rope-yards_, with a Description of the Manufacture, Rules, Tables of Weights, etc., adapted to the Trade, Shipping, Mining, Railways, Builders, etc. By R. CHAPMAN, formerly foreman to Messrs. Huddart and Co., Limehouse, and late Master Ropemaker to H. M. Dockyard, Deptford.

Second edition, 12mo, cloth, 3_s._

_Laxton's Builders' and Contractors' Tables_; for the use of Engineers, Architects, Surveyors, Builders, Land Agents, and others. Bricklayer, containing 22 tables, with nearly 30,000 calculations. 4to, cloth, 5_s._

_Laxton's Builders' and Contractors' Tables._ Excavator, Earth, Land, Water, and Gas, containing 53 tables, with nearly 24,000 calculations.

4to, cloth, 5_s._

_Egyptian Irrigation._ By W. WILLc.o.c.kS, M.I.C.E., Indian Public Works Department, Inspector of Irrigation, Egypt. With Introduction by Lieut.-Col. J. C. Ross, R.E., Inspector-General of Irrigation. _With numerous lithographs and wood engravings_, royal 8vo, cloth, 1_l._ 16_s._

_Screw Cutting Tables for Engineers and Machinists_, giving the values of the different trains of Wheels required to produce Screws of any pitch, calculated by Lord Lindsay, M.P., F.R.S., F.R.A.S., etc. Cloth, oblong, 2_s._

_Screw Cutting Tables_, for the use of Mechanical Engineers, showing the proper arrangement of Wheels for cutting the Threads of Screws of any required pitch, with a Table for making the Universal Gas-pipe Threads and Taps. By W. A. MARTIN, Engineer. Second, edition, oblong, cloth, 1_s._, or sewed, 6_d._

_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 Glossary of Terms used in Coal Mining._ By WILLIAM STUKELEY GRESLEY, a.s.soc. Mem. Inst C.E., F.G.S., Member of the North of England Inst.i.tute of Mining Engineers. _Ill.u.s.trated 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 s.e.xTON. Second edition, royal 32mo, roan, gilt edges, 5_s._

_Electrolysis_: a Practical Treatise on Nickeling, Coppering, Gilding, Silvering, the Refining of Metals, and the treatment of Ores by means of Electricity. By HIPPOLYTE FONTAINE, translated from the French by J.

A. BERLY, C.E., a.s.soc. S.T.E. _With engravings._ 8vo, cloth, 9_s._