_ABNEY._--A TREATISE ON PHOTOGRAPHY. By Sir WILLIAM DE WIVELESLIE ABNEY, K.C.B., F.R.S., Princ.i.p.al a.s.sistant Secretary of the Secondary Department of the Board of Education. With 115 Woodcuts. Fcp. 8vo., 3_s._ 6_d._

_GLAZEBROOK._--PHYSICAL OPTICS. By R. T. GLAZEBROOK, M.A., F.R.S., Princ.i.p.al of University College, Liverpool. With 183 Woodcuts of Apparatus, etc. Fcp. 8vo., 6_s._

_WRIGHT._--OPTICAL PROJECTION: a Treatise on the Use of the Lantern in Exhibition and Scientific Demonstration. By LEWIS WRIGHT, Author of 'Light: a Course of Experimental Optics'. With 232 Ill.u.s.trations.

Crown 8vo., 6_s._

SOUND, LIGHT, HEAT, AND THERMODYNAMICS.

_c.u.mMING._--HEAT TREATED EXPERIMENTALLY. By LINNaeUS c.u.mMING, M.A. With 192 Ill.u.s.trations. Crown 8vo., 4_s._ 6_d._

_DAY._--NUMERICAL EXAMPLES IN HEAT. By R. E. DAY, M.A. Fcp. 8vo., 3_s._ 6_d._

_EMTAGE._--LIGHT. By W. T. A. EMTAGE, M.A. With 232 Ill.u.s.trations.

Crown 8vo., 6_s._

_HELMHOLTZ._--ON THE SENSATIONS OF TONE AS A PHYSIOLOGICAL BASIS FOR THE THEORY OF MUSIC. By HERMANN VON HELMHOLTZ. Royal 8vo., 28_s._

_MADAN._--AN ELEMENTARY TEXT-BOOK ON HEAT For the Use of Schools. By H. G. MADAN, M.A., F.C.S., Fellow of Queen's College, Oxford; late a.s.sistant Master at Eton College. Crown 8vo., 9_s._

_MAXWELL._--THEORY OF HEAT. By J. CLERK MAXWELL, M.A., F.R.SS., L.

and E. With Corrections and Additions by Lord RAYLEIGH. With 38 Ill.u.s.trations. Fcp. 8vo., 4_s._ 6_d._

_SMITH._--THE STUDY OF HEAT. By J. HAMBLIN SMITH M.A., of Gonville and Caius College, Cambridge. Crown 8vo., 3_s._

_TYNDALL._--Works by JOHN TYNDALL, D.C.L., F.R.S See p. 28.

_WORMELL._--A CLa.s.s-BOOK OF THERMODYNAMICS By RICHARD WORMELL, B.Sc., M.A. Fcp. 8vo., 1_s._ 6_d._

_WRIGHT._--Works by MARK R. WRIGHT, M.A.

SOUND, LIGHT, AND HEAT. With 160 Diagrams and Ill.u.s.trations.

Crown 8vo., 2_s._ 6_d._

ADVANCED HEAT. With 136 Diagrams and numerous Examples and Examination Papers. Crown 8vo., 4_s._ 6_d._

STEAM, OIL, AND GAS ENGINES.

_BALE._--A HAND-BOOK FOR STEAM USERS; being Rules for Engine Drivers and Boiler Attendants, with Notes on Steam Engine and Boiler Management and Steam Boiler Explosions. By M. POWIS BALE, M.I.M.E., A.M.I.C.E. Fcp. 8vo., 2_s._ 6_d._

_CLERK._--THE GAS AND OIL ENGINE. By DUGALD CLERK, a.s.sociate Member of the Inst.i.tution of Civil Engineers, Fellow of the Chemical Society, Member of the Royal Inst.i.tution, Fellow of the Inst.i.tute of Patent Agents. With 228 Ill.u.s.trations. 8vo., 15_s._

_HOLMES._--THE STEAM ENGINE. By George C. V. Holmes, Whitworth Scholar, Secretary of the Inst.i.tution of Naval Architects. With 212 Woodcuts. Fcp. 8vo., 6_s._

_NORRIS._--A PRACTICAL TREATISE ON THE 'OTTO' CYCLE GAS ENGINE. By WILLIAM NORRIS, M.I.Mech.E. With 207 Ill.u.s.trations. 8vo., 10_s._ 6_d._

_RIPPER._--Works by WILLIAM RIPPER, Professor of Mechanical Engineering in the Sheffield Technical School.

STEAM. With 142 Ill.u.s.trations. Crown 8vo., 2_s._ 6_d._

STEAM ENGINE THEORY AND PRACTICE. With 438 Ill.u.s.trations.

8vo., 9_s._

_SENNETT AND ORAM._--THE MARINE STEAM ENGINE: A Treatise for Engineering Students, Young Engineers and Officers of the Royal Navy and Mercantile Marine. By the late RICHARD SENNETT, Engineer-in-Chief of the Navy, etc.; and HENRY J. ORAM, Senior Engineer Inspector at the Admiralty, Inspector of Machinery in H.M. Fleet, etc. With 414 Diagrams. 8vo., 21_s._

_STROMEYER._--MARINE BOILER MANAGEMENT AND CONSTRUCTION. Being a Treatise on Boiler Troubles and Repairs, Corrosion, Fuels, and Heat, on the properties of Iron and Steel, on Boiler Mechanics, Workshop Practices, and Boiler Design. By C. E. STROMEYER, Member of the Inst.i.tute of Naval Architects, etc. 8vo., 18_s._ net.

BUILDING CONSTRUCTION.

ADVANCED BUILDING CONSTRUCTION. By the Author of 'Rivingtons' Notes on Building Construction'. With 385 Ill.u.s.trations. Crown 8vo., 4_s._ 6_d._

_BURRELL._--BUILDING CONSTRUCTION. By EDWARD J. BURRELL, Second Master of the People's Palace Technical School, London. With 303 Working Drawings. Crown 8vo., 2_s._ 6_d._

_SEDDON._--BUILDER'S WORK AND THE BUILDING TRADES. By Col. H. C.

SEDDON, R.E., late Superintending Engineer, H.M.'s Dockyard, Portsmouth; Examiner in Building Construction, Science and Art Department, South Kensington. With numerous Ill.u.s.trations. Medium 8vo., 16_s._

RIVINGTONS' COURSE OF BUILDING CONSTRUCTION.

NOTES ON BUILDING CONSTRUCTION. Arranged to meet the requirements of the syllabus of the Science and Art Department of the Committee of Council on Education, South Kensington. Medium 8vo.

Part I. Elementary Stage. With 552 Woodcuts, 10_s._ 6_d._

Part II. Advanced Stage. With 479 Woodcuts, 10_s._ 6_d._

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Part IV. Calculations for Building Structures. Course for Honours. With 597 Woodcuts, 15_s._

ELECTRICITY AND MAGNETISM.

_CARUS-WILSON._--ELECTRO-DYNAMICS: the Direct-Current Motor. By CHARLES ASHLEY CARUS-WILSON, M.A. Cantab. With 71 Diagrams, and a Series of Problems, with Answers. Crown 8vo., 7_s._ 6_d._

_c.u.mMING._--ELECTRICITY TREATED EXPERIMENTALLY. By LINNaeUS c.u.mMING, M.A. With 242 Ill.u.s.trations. Cr. 8vo., 4_s._ 6_d._