PHYSICS: Sound, Light, Heat, Electricity, Elasticity, Attractions, etc. (See also Mechanics.) AIRY.-ON SOUND AND ATMOSPHERIC VIBRATIONS. By Sir G. B. AIRY, K.C.B., formerly Astronomer-Royal. With the Mathematical Elements of Music. Cr. 8vo. 98. CUMMING.-AN INTRODUCTION TO THE THEORY OF ELECTRICITY. By LINNÆUS CUMMING, M.A., Assistant Master at Rugby. Illustrated. Cr. 8vo. 8s. 6d. DANIELL.-A TEXT-BOOK OF THE PRINCIPLES OF PHYSICS. BY ALFRED DANIELL, D.Sc. Illustrated. 2nd Ed., revised and enlarged. 8vo. 21s. DAY.-ELECTRIC LIGHT ARITHMETIC. By R. E. DAY. Pott 8vo. 2s. EVERETT.-ILLUSTRATIONS OF THE C. G. S. SYSTEM OF UNITS WITH TABLES OF PHYSICAL CONSTANTS. By J. D. EVERETT, F.R.S., Professor of Natural Philosophy, Queen's College, Belfast. New Ed. Ex. fcap. 8vo. 5s. By C. FESSENDEN, FESSENDEN.-PHYSICS FOR PUBLIC SCHOOLS. Principal, Collegiate Institute, Peterboro, Ontario. 8vo. 3s. GRAY.-THE THEORY AND PRACTICE OF ABSOLUTE MEASUREMENTS IN ELECTRICITY AND MAGNETISM. By A. GRAY, F.R.S.E., Professor of Physics, University College, Bangor. Two vols. Cr. 8vo. Vol. I. 12s. 6d. [Vol. II. In the Press. 2nd ABSOLUTE MEASUREMENTS IN ELECTRICITY AND MAGNETISM. Ed., revised and greatly enlarged. Fcap. 8vo. 5s. 6d. IBBETSON.-THE MATHEMATICAL THEORY OF PERFECTLY ELASTIC SOLIDS, with a Short Account of Viscous Fluids. By W. J. IBBETSON, late Senior Scholar of Clare College, Cambridge. 8vo. 21s. JOHNSON.-NATURE'S STORY BOOKS. SUNSHINE. LL.A. Illustrated. Cr. 8vo. 6s. *JONES.-EXAMPLES IN PHYSICS. By AMY JOHNSON, With Answers and Solutions. By D. E. JONES, B.Sc., late Professor of Physics, University College of Wales, Aberystwith. Fcap. 8vo. 3s. 6d. *ELEMENTARY LESSONS IN HEAT, LIGHT, AND SOUND. By the same. Gl. 8vo. 2s. 6d. LESSONS IN HEAT AND LIGHT. By the same. Globe 8vo. 3s. 6d. KELVIN.-Works by Lord KELVIN, P.R.S., Professor of Natural Philosophy in the University of Glasgow. ELECTROSTATICS AND MAGNETISM, REPRINTS OF PAPERS ON. 2nd Ed. 8vo. 18s. POPULAR LECTURES AND ADDRESSES. 3 vols. Illustrated. Cr. 8vo. Vol. I. CONSTITUTION OF MATTER. 7s. 6d. Vol. III. NAVIGATION. 7s. 6d. LOCKYER.-CONTRIBUTIONS TO SOLAR PHYSICS. By J. NORMAN LOCKYER, F.R.S. With Illustrations. Royal 8vo. 31s. 6d. LODGE.-MODERN VIEWS OF ELECTRICITY. BY OLIVER J. LODGE, F.R.S., Professor of Physics, University College, Liverpool. Illus. Cr. 8vo. 6s. 6d. LOEWY.-*QUESTIONS AND EXAMPLES ON EXPERIMENTAL PHYSICS: Sound, Light, Heat, Electricity, and Magnetism. By B. LOEWY, Examiner in Experimental Physics to the College of Preceptors. Fcap. 8vo. 2s. *A GRADUATED COURSE OF NATURAL SCIENCE FOR ELEMENTARY AND TECHNICAL SCHOOLS AND COLLEGES. By the same. Part I. FIRST YEAR'S COURSE. Gl. 8vo. 2s. Part II. 2s. 6d. LUPTON.-NUMERICAL TABLES AND CONSTANTS IN ELEMENTARY SCIENCE. By S. LUPTON, M.A. Ex. fcap. 8vo. 2s. 6d. MACFARLANE.-PHYSICAL ARITHMETIC. By A. MACFARLANE, D.Sc., late Examiner in Mathematics at the University of Edinburgh. Cr. 8vo. 7s. 6d. *MAYER.-SOUND: A Series of Simple Experiments. By A. M. MAYER, Prof. of Physics in the Stevens Institute of Technology. Illustrated. Cr. 8vo. 3s. 6d. *MAYER-BARNARD.-LIGHT: A Series of Simple Experiments. By A. M. MAYER and C. BARNARD. Illustrated. Cr. 8vo. 2s. 6d. MOLLOY.-GLEANINGS IN SCIENCE: Popular Lectures. By Rev. GERALD MOLLOY, D.Sc., Rector of the Catholic University of Ireland. 8vo. 7s. 6d. NEWTON.-PRINCIPIA. Edited by Prof. Sir W. THOMSON, P.R.S., and Prof. BLACKBURNE. 4to. 31s. 6d. THE FIRST THREE SECTIONS OF NEWTON'S PRINCIPIA. With Notes, Illustrations, and Problems. By P. FROST, M.A., D.Sc. 3rd Ed. 8vo. 12s. PARKINSON.-A TREATISE ON OPTICS. By S. PARKINSON, D.D., F.R.S., late Tutor of St. John's College, Cambridge. 4th Ed. Cr. 8vo. 10s. 6d. PEABODY.-THERMODYNAMICS OF THE STEAM-ENGINE AND OTHER HEAT-ENGINES. BY CECIL H. PEABODY. 8vo. 21s. PERRY.-STEAM: An Elementary Treatise. By JOHN PERRY, Prof. of Applied Mechanics, Technical College, Finsbury. 18mo. 4s. 6d. PICKERING.-ELEMENTS OF PHYSICAL MANIPULATION. By Prof. EDWARD C. PICKERING. Medium 8vo. Part I., 12s. 6d. Part II., 14s. PRESTON.-THE THEORY OF LIGHT. By THOMAS PRESTON, M.A. Illustrated. 8vo. 15s. net. 8vo. [In preparation. By LORD RAYLEIGH, F.R.S. 8vo. THE THEORY OF HEAT. By the same. By [In preparation. RELATION TO SHANN. AN ELEMENTARY TREATISE ON HEAT, IN STEWART.-Works by BALFOUR STEWART, F.R.S., late Langworthy Professor of 1s. *A PRIMER OF PHYSICS. Illustrated. With Questions. 18mo. *LESSONS IN ELEMENTARY PHYSICS. Illustrated. Fcap. 8vo. 4s. 6d. *QUESTIONS. By Prof. T. H. CORE. Fcap. 8vo. 2s. STEWART-GEE.-LESSONS IN ELEMENTARY PRACTICAL PHYSICS. By BALFOUR STEWART, F.R.S., and W. W. HALDANE GEE, B.Sc. Cr. 8vo. Vol. I. GENERAL PHYSICAL PROCESSES. 6s. Vol. II. ELECTRICITY AND MAGNETISM. 7s. 6d. [Vol. III. OPTICS, HEAT, AND SOUND. In the Press. *PRACTICAL PHYSICS FOR SCHOOLS AND THE JUNIOR STUDENTS OF COLLEGES. Gl. 8vo. Vol. I. ELECTRICITY AND MAGNETISM. 2s. 6d. [Vol. II. OPTICS, HEAT, AND SOUND. In the Press. STOKES.-ON LIGHT. Burnett Lectures. By Sir G. G. STOKES, F.R.S., Lucasian Professor of Mathematics in the University of Cambridge. I. ON THE NATURE OF LIGHT. II. ON LIGHT AS A MEANS OF INVESTIGATION. III. ON THE BENEFICIAL EFFECTS OF LIGHT. 2nd Ed. Cr. 8vo. 7s. 6d. STONE.-AN ELEMENTARY TREATISE ON SOUND. Illustrated. Fcap. 8vo. 3s. 6d. By W. H. STONE. TAIT.-HEAT. By P. G. TAIT, Professor of Natural Philosophy in the University of Edinburgh. Cr. Svo. 6s. LECTURES ON SOME RECENT ADVANCES IN PHYSICAL SCIENCE. By the same. 3rd Edition. Crown 8vo. 9s. TAYLOR.-SOUND AND MUSIC. An Elementary Treatise on the Physical Con- A TREATISE ON THE MOTION OF VORTEX RINGS. 8vo. 6s. APPLICATIONS OF DYNAMICS TO PHYSICS AND CHEMISTRY. Cr. 8vo. 7s. 6d. TODHUNTER.-A HISTORY OF THE MATHEMATICAL THEORIES OF ATTRACTION, AND THE FIGURE OF THE EARTH, from the time of Newton to that of Laplace. By ISAAC TODHUNTER, F.R.S. 2 vols. 8vo. 24s. TURNER.-A COLLECTION OF EXAMPLES ON HEAT AND ELECTRICITY. By H. H. TURNER, Fellow of Trinity College, Cambridge. Cr. 8vo. 2s. 6d. WRIGHT.-LIGHT: A Course of Experimental Optics, chiefly with the Lantern. By LEWIS WRIGHT. Illustrated. New Ed. Cr. 8vo. 7s. 6d. ASTRONOMY. AIRY.-Works by Sir G. B. AIRY, K.C.B., formerly Astronomer-Royal. CHEYNE.-AN ELEMENTARY TREATISE ON THE PLANETARY THEORY. A TREATISE ON ASTRONOMY. 4th Ed. 8vo. 12s. 6d. AN ELEMENTARY TREATISE ON THE LUNAR THEORY. Cr. 8vo. 5s. 6d. LOCKYER.-Works by J. NORMAN LOCKYER, F.R.S. *A PRIMER OF ASTRONOMY. Illustrated. 18mo. 1s. *ELEMENTARY LESSONS IN ASTRONOMY. With Spectra of the Sun, Stars, and Nebulæ, and Illus. 36th Thousand. Revised throughout. Fcap. 8vo. 5s. 6d. *QUESTIONS ON THE ABOVE. By J. FORBES ROBERTSON. 18mo. 1s. 6d. THE CHEMISTRY OF THE SUN. Illustrated. 8vo. 14s. THE METEORITIC HYPOTHESIS OF THE ORIGIN OF COSMICAL SYSTEMS. Illustrated. 8vo. 17s. net. STAR-GAZING PAST AND PRESENT. Expanded from Notes with the assistance of G. M. SEABROKE, F.R.A.S. Roy. 8vo. 21s. NEWCOMB.-POPULAR ASTRONOMY. By S. NEWCOMB, LL.D., Professor U.S. Naval Observatory. Illustrated. 2nd Ed., revised. 8vo. 18s. HISTORICAL. BALL.-A SHORT ACCOUNT OF THE HISTORY OF MATHEMATICS. By W. W. ROUSE BALL, M.A. Cr. 8vo. 10s. 6d. MATHEMATICAL RECREATIONS, AND PROBLEMS OF PAST AND PRESENT TIMES. By the same. Cr. 8vo. 7s. net. NATURAL SCIENCES. Chemistry; Physical Geography, Geology, and Mineralogy; Biology (Botany, Zoology, General Biology, Physiology); Medicine. CHEMISTRY. ARMSTRONG.-A MANUAL OF INORGANIC CHEMISTRY. By H. E. ARMSTRONG, F.R.S., Professor of Chemistry, City and Guilds Central Institute. [In preparation. *COHEN. THE OWENS COLLEGE COURSE OF PRACTICAL ORGANIC CHEMISTRY. By JULIUS B. COHEN, Ph.D., Assistant Lecturer on Chemistry, Owens College, Manchester. Fcap. 8vo. 2s. 6d. *DOBBIN-WALKER.-CHEMICAL THEORY FOR BEGINNERS. By L. DOBBIN, Ph.D., and JAS. WALKER, Ph.D., Assistants in the Chemistry Department, University of Edinburgh. 18mo. 2s. 6d. FLEISCHER.-A SYSTEM OF VOLUMETRIC ANALYSIS. BY EMIL FLEISCHER. Translated, with Additions, by M. M. P. MUIR, F.R.S. E. Cr. 8vo. 7s. 6d. FRANKLAND.-AGRICULTURAL CHEMICAL ANALYSIS. (See Agriculture.) HARTLEY.-A COURSE OF QUANTITATIVE ANALYSIS FOR STUDENTS: By W. N. HARTLEY, F.R.S., Professor of Chemistry, Royal College of Science, Dublin. Gl. 8vo. 5s. HEMPEL.-METHODS OF GAS ANALYSIS. By Dr. WALTHER HEMPEL. Translated by Dr. L. M. DENNIS. Cr. 8vo. 7s. 6d. HIORNS.-Works by A. H. HIORNS, Principal of the School of Metallurgy, A TEXT-BOOK OF ELEMENTARY METALLURGY. 4s. IRON AND STEEL MANUFACTURE. For Beginners. 3s. 6d. MIXED METALS OR METALLIC ALLOYS. 6s. METAL COLOURING AND BRONZING. By the same. JONES.-*THE OWENS COLLEGE JUNIOR COURSE OF PRACTICAL CHEMISTRY. BY FRANCIS JONES, F.R.S. E., Chemical Master at the Grammar School, Manchester. Illustrated. Fcap. 8vo. 2s. 6d. *QUESTIONS ON CHEMISTRY. Inorganic and Organic. By the same. Fcap. 8vo. 3s. LANDAUER.-BLOWPIPE ANALYSIS. By J. LANDauer. Translated by J. LOCKYER. THE CHEMISTRY OF THE SUN. By J. NORMAN LOCKYER, F.R.S. Illustrated. 8vo. 14s. LUPTON.-CHEMICAL ARITHMETIC. With 1200 Problems. By S. LUPTON, M.A. 2nd Ed., revised. Fcap. 8vo. 4s. 6d. MELDOLA. THE CHEMISTRY OF PHOTOGRAPHY. BY RAPHAEL MELDOLA, F.R.S., Professor of Chemistry, Technical College, Finsbury. Cr. 8vo. 6s. MEYER.- HISTORY OF CHEMISTRY FROM THE EARLIEST TIMES TO THE PRESENT DAY. By ERNST VON MEYER, Ph.D. Translated by GEORGE MCGOWAN, Ph.D. 8vo. 14s. net. MIXTER.-AN ELEMENTARY TEXT-BOOK OF CHEMISTRY. By W.G.MIXTER, Professor of Chemistry, Yale College. 2nd Ed. Cr. 8vo. 7s. 6d. MUIR.-PRACTICAL CHEMISTRY FOR MEDICAL STUDENTS: First M.B. Course. By M. M. P. MUIR, F.R.S.E., Fellow and Prælector in Chemistry at Gonville and Caius College, Cambridge. Fcap. 8vo. 1s. 6d. MUIR- WILSON.-THE ELEMENTS OF THERMAL CHEMISTRY. By M. M. P. MUIR, F.R.S. E.; assisted by D. M. WILSON. 8vo. 12s. 6d. OSTWALD.-OUTLINES OF GENERAL CHEMISTRY: Physical and Theoretical. By Prof. W. OSTWALD. Trans. by JAS. WALKER, D.Sc. 8vo. 10s. net. RAMSAY.-EXPERIMENTAL PROOFS OF CHEMICAL THEORY FOR BEGINNERS. BY WILLIAM RAMSAY, F.R.S., Professor of Chemistry, University College, London. 18mo. 2s. 6d. REMSEN.-Works by IRA REMSEN, Prof. of Chemistry, Johns Hopkins University. *THE ELEMENTS OF CHEMISTRY. For Beginners. Fcap. 8vo. 2s. 6d. AN INTRODUCTION TO THE STUDY OF CHEMISTRY (INORGANIC CHEMISTRY). Cr. 8vo. 6s. 6d. COMPOUNDS OF CARBON: an Introduction to the Study of Organic Chemistry. Cr. 8vo. 6s. 6d. A TEXT-BOOK OF INORGANIC CHEMISTRY. 8vo. 16s, ROSCOE.-Works by Sir HENRY E. ROSCOE, F.R.S., formerly Professor of Chemistry, Owens College, Manchester. *A PRIMER OF CHEMISTRY. Illustrated. With Questions. 18mo. 1s. *LESSONS IN ELEMENTARY CHEMISTRY, INORGANIC AND ORGANIC. With Illustrations and Chromolitho of the Solar Spectrum, and of the Alkalies and Alkaline Earths. New Ed., 1892. Fcap. 8vo. 4s. 6d. ROSCOE-SCHORLEMMER.-A TREATISE ON INORGANIC AND ORGANIC CHEMISTRY. By Sir HENRY ROSCOE, F.R.S., and Prof. C. SCHORLEMMER, F.R.S. 8vo. Vols. I. and II. INORGANIC CHEMISTRY. Vol. I.-The Non-Metallic Elements. 2nd Ed. 21s. Vol. II. Two Parts, 18s. each. Vol. III.-ORGANIC CHEMISTRY. THE CHEMISTRY OF THE HYDROCARBONS and their Derivatives. Parts I. II. IV. and VI. 21s. each. 18s. each. Parts III. and V. ROSCOE-SCHUSTER.-SPECTRUM ANALYSIS. By Sir HENRY ROSCOE, F.R.S. 4th Ed., revised by the Author and A. SCHUSTER, F.R.S., Professor of Applied Mathematics in the Owens College, Manchester. 8vo. 21s. *THORPE.-A SERIES OF CHEMICAL PROBLEMS. With Key. By T. E. THORPE, F.R.S., Professor of Chemistry, Royal College of Science. New Ed. Fcap. 8vo. 2s. THORPE RÜCKER.—A TREATISE ON CHEMICAL PHYSICS. By Prof. T. E. THORPE and Prof. A. W. RÜCKER. 8vo. [In preparation. WURTZ.-A HISTORY OF CHEMICAL THEORY. By AD. WURTZ. Translated by HENRY WATTS, F.R.S. Crown 8vo. 6s. PHYSICAL GEOGRAPHY, GEOLOGY, AND BLANFORD.-THE RUDIMENTS OF PHYSICAL GEOGRAPHY FOR INDIAN Cr. 8vo. 4s. 6d. 28s. *A PRIMER OF PHYSICAL GEOGRAPHY. Illus. With Questions. 18mo. 1s. LOCKYER.-OUTLINES OF PHYSIOGRAPHY-THE MOVEMENTS OF THE |