Now any one who undertakes to encourage invention must necessarily make mistakes. He may indeed know that one case of brilliant success will make up for half a dozen comparative failures; but he reckons that at any rate the blanks in the chances which he is taking will numerically exceed the prizes. An official, however, will not dare to draw blanks. Better for him to draw nothing at all. He must therefore turn his back upon the inventor and approve of nothing which has not been shown to be a great success elsewhere.

This means that the socialised and municipalised enterprises must always lag behind those depending upon private effort; and the country which imposes disabilities on the latter must, for a time at least, lose its lead in the industrial race. This is what happened to England, as contrasted with the United States, when, under the influence of enthusiasm for future municipalisation, the British Legislature laid heavy penalties upon those who should venture to instal electric trams in the United Kingdom.

The American manufacturers and tramway companies, in their keen competition with one another and perfect freedom to compete on even terms with horse traction, soon took the lead in all matters pertaining to electric traction, and the British public, at the close of the nineteenth century, have had to witness the humiliating spectacle of their own public authorities being forced to import electrical apparatus, and even steam-engines applicable to dynamos used for tramway purposes, from the other side of the Atlantic!

The lesson thus enforced will not in the end be missed, although it may require a considerable time to be fully understood. Officialism is a foe to inventive progress; and whether it exists under a regime of collectivism or under one of autocracy, it must paralyse industrial enterprise to that extent, thus rendering the country which has adopted it liable to be outstripped by its competitors.

The true friend of inventive progress is generally the rising competitor in a busy hive of industry where the difficulties of securing a profitable footing are very considerable. Such a man is ever on the watch for an opportunity to gain some leverage by which he may raise himself to a level with older-established or richer competitors. If he be a good employer his workmen enter into the spirit of the competition, feeling that promotion will follow on any services they may render. They may perhaps possess the inventive talent themselves, or they may do even greater services by recognising it in others and co-operating in their work. It is thus that successful inventions are usually started on their useful careers.

It is therefore upon private enterprise that the principal onus of advancing the inventions which will contribute to the progress of the human race in the twentieth century must necessarily fall. The type of man who will cheerfully work pro bono publico, with just as much ardour as he would exhibit when labouring to advance his own interests, may already be found here and there in civilised communities at existing stages of development; but it is not sufficiently numerous to enable the world to dispense with the powerful stimulus of competition.

Just as a superior type of machinery can be elaborated during the course of a single century, there is no doubt that—mainly through the use of improved appliances for lessening the amount of brute force which man needs to exert in his daily avocations—the nervous organisations of the men and women constituting the rank and file during the latter part of the twentieth century will be immensely improved in sensitiveness. A corresponding advance will then take place in the capacity for collectivism. But a human being of the high class demanded for the carrying out of any scheme of State socialism must be bred by a slow improvement during successive generations. A hundred years do not constitute a long period of time in the process of the organic evolution of the human race, and, as Tennyson declared,

We are far from the noon of man— There is time for the race to grow.

Yet the public advantages of collectivist activities in certain particular directions cannot for a moment be denied. Much waste and heavy loss are entailed by the duplication of works of general utility by rival owners, each of them, perhaps, only half utilising the full capacities of his machinery or of the other plant upon which capital has been expended.

Moreover, as soon as companies have become so large that their managers and other officials are brought into no closer personal relations with the shareholders than the town clerks, engineers, and surveyors of cities, and the departmental heads of State bureaus are associated with the voters and ratepayers, the systems of private and of collective ownership begin to stand much more nearly on a par as regards the non-encouragement which they offer to inventiveness.

One of the greatest discoveries of the twentieth century, therefore, will be the adoption of a via media which will admit of the progressiveness of private ownership in promoting industrial inventions, combined with the political progressiveness of collectivism. One direction in which an important factor assisting in the solution of this problem is to be expected is in the removal of the causes which tend to make public officials so timid and unprogressive.

So long as a mere temporary outcry about the apparent non-success of some adopted improvement—whose real value perhaps cannot be proved unless by the exercise of patience—may result in the dismissal or in the disrating of the official who has recommended it, just so long will all those who are called upon to act as guides to public enterprises be compelled to stick to the most conservative lines in the exercise of their duties. More assurance of permanence in positions of public administration is needed.

The man upon whose shoulders rests the responsibility of adopting, or of condemning, new proposals brought before him, ostensibly in the interests of the public welfare, ought to be regarded as being called upon to carry out quasi-judicial functions; and his tenure of office, and his claim to a pension after a busy career, ought not to depend upon the chances of the evanescent politics of the day. If a man has proved, by his close and successful application to the study of his profession—as evinced in the tests which he has passed as a youth and during his subsequent career in subordinate positions—that he is really a lover of hard work, and imbued with conscientious devotion to duty, he may generally be trusted, when he has attained to a position of superintendence, to do his utmost in the interests of the public whom he serves. This is the theory upon which the appointment of a judge in almost any English-speaking community is understood to be made; and, although failures in its application may occur now and then, there is no doubt whatever that on the average of cases it works out well in practice.

If private manufacturers, whose success in life depends upon their appreciation of talent and inventiveness, could be assured that in dealing with public officials they would be brought into contact with men of the standing indicated, instead of being confronted so frequently with the demand for commissions and other kinds of solatium on account of the risks undertaken in recommending anything new, they would soon largely modify their distrust of what is known as collectivism. It is the duty of the public whose servant an official is, rather than of the private manufacturer, to insure him against the danger of losing his position on account of any possible mistake in the exercise of his judgment.

In short, the day is not far distant when the men upon whom devolves the responsibility of examining into, and reporting upon, the claims of those who profess to have made important industrial improvements will be looked upon as exercising judicial functions of the very highest type. When the important reforms arising from this recognition have been introduced, the forces of collectivism will cease to range themselves on the side of stolid conservatism in industry, as they undoubtedly have done in the nineteenth century even while they inconsistently professed to advance the cause of progress politically.

The inventor, who in the early part of the nineteenth century was generally denounced as a public enemy, will, in the latter part of the twentieth century, be hailed as a benefactor to the community, because he will be judged by the ultimate, rather than by the immediate, effects of his work, and because it will be the duty of the public authorities to see to it that the dislocation of one industry incidental the promotion of another by any invention does not, on the whole, operate to throw people out of employment, but, on the contrary, gives more constant work and better wages to all. But the slow progress of the fundamental traits of human nature will retard the attainment of this goal. The world has a long distance to travel in the uphill road of industrial and social improvement before it can succeed in obtaining a really true view of the part fulfilled by inventive genius in contributing to human happiness.

THE ABERDEEN UNIVERSITY PRESS LIMITED.



A CLASSIFIED CATALOGUE OF SCIENTIFIC WORKS

PUBLISHED BY MESSRS. LONGMANS, GREEN, & CO.

LONDON: 39 PATERNOSTER ROW, E.C. NEW YORK: 91 & 93 FIFTH AVENUE. BOMBAY: 32 HORNBY ROAD.

CONTENTS.

PAGE ADVANCED SCIENCE MANUALS 30 AGRICULTURE 27 ASTRONOMY 14 BACTERIOLOGY 25 BIOLOGY 25 BOTANY AND GARDENING 26 BUILDING CONSTRUCTION 10 CHEMISTRY 2 DYNAMICS 6 ELECTRICITY 11 ELEMENTARY SCIENCE MANUALS 30 ENGINEERING 12 GEOLOGY 16 HEALTH AND HYGIENE 18 HEAT 8 HYDROSTATICS 6 LIGHT 8 LONDON SCIENCE CLASS-BOOKS 32 LONGMANS' CIVIL ENGINEERING SERIES 13 MACHINE DRAWING AND DESIGN 13 MAGNETISM 11 MANUFACTURES 18 MECHANICS 6 MEDICINE AND SURGERY 19 METALLURGY 14 MINERALOGY 14 NATURAL HISTORY AND GENERAL SCIENCE 17 NAVAL ARCHITECTURE 13 NAVIGATION 14 OPTICS 8 PHOTOGRAPHY 8 PHYSICS 5 PHYSIOGRAPHY 16 PHYSIOLOGY 25 PRACTICAL ELEMENTARY SCIENCE SERIES 32 PROCTOR'S (R. A.) WORKS 15 SOUND 8 STATICS 6 STEAM, OIL AND GAS ENGINES 9 STRENGTH OF MATERIALS 12 TECHNOLOGY 18 TELEGRAPHY 12 TELEPHONE 12 TEXT-BOOKS OF SCIENCE 29 THERMODYNAMICS 8 TYNDALL'S (JOHN) WORKS 28 VETERINARY MEDICINE, ETC. 24 WORKSHOP APPLIANCES 14 ZOOLOGY 25



CHEMISTRY.

CROOKES.—SELECT METHODS IN CHEMICAL ANALYSIS, chiefly Inorganic. By Sir WILLIAM CROOKES, F.R.S., etc. Third Edition, Rewritten and Enlarged. With 67 Woodcuts. 8vo., 21s. net.

FURNEAUX.—ELEMENTARY CHEMISTRY, Inorganic and Organic. By W. FURNEAUX, F.R.G.S., Lecturer on Chemistry, London School Board. With 65 Illustrations and 155 Experiments. Crown 8vo., 2s. 6d.

GARRETT AND HARDEN.—AN ELEMENTARY COURSE OF PRACTICAL ORGANIC CHEMISTRY. By F. C. GARRETT, M.Sc. (Vict. et Dunelm.), Assistant Lecturer and Demonstrator in Chemistry, the Durham College of Science, Newcastle-on-Tyne; and ARTHUR HARDEN, M.Sc. (Vict.), Ph.D., Assistant Lecturer and Demonstrator in Chemistry, the Owens College, Manchester. With 14 Illustrations. Crown 8vo., 2s.

JAGO.—Works by W. JAGO, F.C.S., F.I.C.

INORGANIC CHEMISTRY, THEORETICAL AND PRACTICAL. With an Introduction to the Principles of Chemical Analysis Inorganic and Organic. With 63 Woodcuts and numerous Questions and Exercises. Fcp. 8vo., 2s. 6d.

AN INTRODUCTION TO PRACTICAL INORGANIC CHEMISTRY. Crown 8vo., 1s. 6d.

INORGANIC CHEMISTRY, THEORETICAL AND PRACTICAL. A Manual for Students in Advanced Classes of the Science and Art Department. With Plate of Spectra and 78 Woodcuts. Crown 8vo., 4s. 6d.

KOLBE.—A SHORT TEXT-BOOK OF INORGANIC CHEMISTRY. By Dr. HERMANN KOLBE. Translated and Edited by T. S. HUMPIDGE, Ph.D. With 66 Illustrations. Crown 8vo., 8s. 6d.

MENDELEEFF.—THE PRINCIPLES OF CHEMISTRY. By D. MENDELEEFF. Translated from the Russian (Sixth Edition) by GEORGE KAMENSKY, A.R.S.M., of the Imperial Mint, St. Petersburg; and Edited by T. A. LAWSON, B.Sc, Ph.D., Fellow of the Institute of Chemistry. With 96 Diagrams and Illustrations. 2 vols. 8vo., 36s.

MEYER.—OUTLINES OF THEORETICAL CHEMISTRY. By LOTHAR MEYER, Professor of Chemistry in the University of Tuebingen. Translated by Professors P. PHILLIPS BEDSON, D.Sc., and W. CARLETON WILLIAMS, B.Sc. 8vo., 9s.

MILLER.—INTRODUCTION TO THE STUDY OF INORGANIC CHEMISTRY. By W. ALLEN MILLER, M.D., LL.D. With 71 Woodcuts, Fcp. 8vo., 3s. 6d.

MUIR.—A COURSE OF PRACTICAL CHEMISTRY. By M. M. P. MUIR, M.A., Fellow and Praelector in Chemistry of Gonville and Caius College, Cambridge. (3 Parts.)

Part I. Elementary. Crown 8vo., 4s. 6d.

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Part III. [In preparation.

NEWTH.—Works by G. S. NEWTH, F.I.C, F.C.S., Demonstrator in the Royal College of Science, London.

CHEMICAL LECTURE EXPERIMENTS. With 230 Illustrations. Crown 8vo., 6s.

CHEMICAL ANALYSIS, QUANTITATIVE AND QUALITATIVE. With 100 Illustrations. Crown 8vo., 6s. 6d.

A TEXT-BOOK OF INORGANIC CHEMISTRY. With 146 Illustrations. Crown 8vo., 6s. 6d.

ELEMENTARY PRACTICAL CHEMISTRY. With 108 Illustrations and 254 Experiments. Crown 8vo., 2s. 6d.

OSTWALD.—SOLUTIONS. By W. OSTWALD, Professor of Chemistry in the University of Leipzig. Being the Fourth Book, with some additions, of the Second Edition of Oswald's 'Lehrbuch der allgemeinen Chemie'. Translated by M. M. PATTISON MUIR, Fellow and Praelector in Chemistry of Gonville and Caius College, Cambridge. 8vo., 10s. 6d.

PERKIN.—QUALITATIVE ANALYSIS (INORGANIC AND ORGANIC). By F. MOLLWO PERKIN, Ph.D.

REYNOLDS.—EXPERIMENTAL CHEMISTRY FOR JUNIOR STUDENTS. By J. EMERSON REYNOLDS, M.D., F.R.S., Professor of Chemistry, University of Dublin. Fcp. 8vo., with numerous Woodcuts.

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SHENSTONE.—Works by W. A. SHENSTONE, F.R.S., Lecturer on Chemistry in Clifton College.

THE METHODS OF GLASS-BLOWING. For the use of Physical and Chemical Students. With 42 Illustrations. Crown 8vo., 1s. 6d.

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THORNTON AND PEARSON.—NOTES ON VOLUMETRIC ANALYSIS. By ARTHUR THORNTON, M.A., and MARCHANT PEARSON, B.A., Assistant Science Master, Bradford Grammar School. Medium 8vo., 2s.

THORPE.—Works by T. E. THORPE, C.B., B.Sc. (Vict.), Ph.D., F.R.S., Professor of Chemistry in the Royal College of Science, South Kensington. Assisted by Eminent Contributors.

A DICTIONARY OF APPLIED CHEMISTRY. 3 vols. 8vo. Vols. I. and II., 42s. each. Vol. III., 63s.

QUANTITATIVE CHEMICAL ANALYSIS. With 88 Woodcuts. Fcp. 8vo., 4s. 6d.

THORPE AND MUIR.—QUALITATIVE CHEMICAL ANALYSIS AND LABORATORY PRACTICE. By T. E. THORPE, C.B., Ph.D., D.Sc., F.R.S., and M. M. PATTISON MUIR, M.A. With Plate of Spectra and 57 Woodcuts. Fcp. 8vo., 3s. 6d.

TILDEN.—Works by WILLIAM A. TILDEN, D.Sc. London, F.R.S., Professor of Chemistry in the Royal College of Science, South Kensington.

A SHORT HISTORY OF THE PROGRESS OF SCIENTIFIC CHEMISTRY IN OUR OWN TIMES. Crown 8vo., 5s. net.

INTRODUCTION TO THE STUDY OF CHEMICAL PHILOSOPHY. The Principles of Theoretical and Systematic Chemistry. With 5 Woodcuts. With or without the ANSWERS of Problems. Fcp. 8vo., 4s. 6d.

PRACTICAL CHEMISTRY. The principles of Qualitative Analysis. Fcp. 8vo., 1s. 6d.

HINTS ON THE TEACHING OF ELEMENTARY CHEMISTRY IN SCHOOLS AND SCIENCE CLASSES. With 7 Illustrations. Crown 8vo., 2s.

WATTS' DICTIONARY OF CHEMISTRY. Revised and entirely Rewritten by H. FORSTER MORLEY, M.A., D.Sc., Fellow of, and lately Assistant Professor of Chemistry in, University College, London; and M. M. PATTISON MUIR, M.A., F.R.S.E., Fellow, and Praelector in Chemistry, of Gonville and Caius College, Cambridge. Assisted by Eminent Contributors. 4 vols. 8vo. Vols. I. and II., 42s. each. Vol. III., 50s. Vol. IV., 63s.

WHITELEY.—Works by R. LLOYD WHITELEY, F.I.C., Principal of the Municipal Science School, West Bromwich.

CHEMICAL CALCULATIONS. With Explanatory Notes, Problems and Answers, specially adapted for use in Colleges and Science Schools. With a Preface by Professor F. CLOWES, D.Sc. (Lond.), F.I.C. Crown 8vo., 2s.

ORGANIC CHEMISTRY: the Fatty Compounds. With 45 Illustrations. Crown 8vo., 3s. 6d.



PHYSICS, ETC.

GANOT.—Works by PROFESSOR GANOT. Translated and Edited by E. ATKINSON, Ph.D., F.C.S.

ELEMENTARY TREATISE ON PHYSICS, Experimental and Applied. With 9 Coloured Plates and Maps, and 1057 Woodcuts, and Appendix of Problems and Examples with Answers. Crown 8vo., 15s.

NATURAL PHILOSOPHY FOR GENERAL READERS AND YOUNG PERSONS. With 7 Plates, 624 Woodcuts, and an Appendix of Questions. Crown 8vo., 7s. 6d.

GLAZEBROOK AND SHAW.—PRACTICAL PHYSICS. By R. T. GLAZEBROOK, M.A., F.R.S., and W. N. SHAW, M.A. With 134 Woodcuts. Fcp. 8vo., 7s. 6d.

GUTHRIE.—MOLECULAR PHYSICS AND SOUND. By F. GUTHRIE, Ph.D. With 91 Diagrams. Fcp. 8vo., 1s. 6d.

HELMHOLTZ.—POPULAR LECTURES ON SCIENTIFIC SUBJECTS. By HERMANN VON HELMHOLTZ. Translated by E. ATKINSON, Ph.D., F.C.S., formerly Professor of Experimental Science, Staff College. With 68 Illustrations. 2 vols., crown 8vo., 3s. 6d. each.

CONTENTS.—Vol. I.—The Relation of Natural Science to Science in General—Goethe's Scientific Researches—The Physiological Causes of Harmony in Music—Ice and Glaciers—The Interaction of the Natural Forces—The Recent Progress of the Theory of Vision—The Conservation of Force—The Aim and Progress of Physical Science.

CONTENTS.—Vol. II.—Gustav Magnus. In Memoriam—The Origin and Significance of Geometrical Axioms—The Relation of Optics to Painting—The Origin of the Planetary System—Thought in Medicine—Academic Freedom in German Universities—Hermann Von Helmholtz—An Autobiographical Sketch.

HENDERSON.—ELEMENTARY PHYSICS. By JOHN HENDERSON, D.Sc. (Edin.), A.I.E.E., Physics Department, Borough Road Polytechnic. Crown 8vo., 2s. 6d.

MACLEAN.—EXERCISES IN NATURAL PHILOSOPHY. By MAGNUS MACLEAN, D.Sc., Professor of Electrical Engineering at the Glasgow and West of Scotland Technical College. Crown 8vo., 4s. 6d.

MEYER.—THE KINETIC THEORY OF GASES. Elementary Treatise, with Mathematical Appendices. By Dr. OSKAR EMIL MEYER, Professor of Physics at the University of Breslau. Second Revised Edition. Translated by ROBERT E. BAYNES, M.A., Student of Christ Church, Oxford, and Dr. Lee's Reader in Physics. 8vo., 15s. net.

VAN 'THOFF.—THE ARRANGEMENT OF ATOMS IN SPACE. By J. H. VAN T'HOFF. Second, Revised, and Enlarged Edition. With a Preface by JOHANNES WISLICENUS, Professor of Chemistry at the University of Leipzig; and an Appendix 'Stereo-chemistry among Inorganic Substances,' by ALFRED WERNER, Professor of Chemistry at the University of Zuerich. Translated and Edited by ARNOLD EILOART. Crown 8vo., 6s. 6d.

WATSON.—Works by W. WATSON, B.Sc., Assistant Professor of Physics in the Royal College of Science, London; Assistant Examiner in Physics, Science and Art Department.

ELEMENTARY PRACTICAL PHYSICS: a Laboratory Manual for Use in Organised Science Schools. With 120 Illustrations and 193 Exercises. Crown 8vo., 2s. 6d.

A TEXT-BOOK OF PHYSICS. With 564 Diagrams and Illustrations. Large crown 8vo., 10s. 6d.

WORTHINGTON.—A FIRST COURSE OF PHYSICAL LABORATORY PRACTICE. Containing 264 Experiments. By A. M. WORTHINGTON, M.A., F.R.S. With Illustrations. Crown 8vo., 4s. 6d.

WRIGHT.—ELEMENTARY PHYSICS. By MARK R. WRIGHT, M.A., Professor of Normal Education, Durham College of Science. With 242 Illustrations. Crown 8vo., 2s. 6d.



MECHANICS, DYNAMICS, STATICS, HYDROSTATICS, ETC.

BALL.—A CLASS-BOOK OF MECHANICS. By Sir R. S. BALL, LL.D. 89 Diagrams. Fcp. 8vo., 1s. 6d.

GELDARD.—STATICS AND DYNAMICS. By C. GELDARD, M.A., formerly Scholar of Trinity College, Cambridge. Crown 8vo., 5s.

GOODEVE.—Works by T. M. GOODEVE, M.A., formerly Professor of Mechanics at the Normal School of Science, and the Royal School of Mines.

THE ELEMENTS OF MECHANISM. With 357 Woodcuts. Crown 8vo., 6s.

PRINCIPLES OF MECHANICS. With 253 Woodcuts and numerous Examples. Crown 8vo., 6s.

A MANUAL OF MECHANICS: an Elementary Text-Book for Students of Applied Mechanics. With 138 Illustrations and Diagrams and 188 Examples taken from the Science Department Examination Papers, with Answers. Fcp. 8vo., 2s. 6d.

GOODMAN.—MECHANICS APPLIED TO ENGINEERING. By JOHN GOODMAN, Wh. Sch., A.M.I.C.E., M.I.M.E., Professor of Engineering in the Yorkshire College, Leeds (Victoria University). With 620 Illustrations and numerous examples. Crown 8vo., 7s. 6d. net.

GRIEVE.—LESSONS IN ELEMENTARY MECHANICS. By W. H. GRIEVE, late Engineer, R.N., Science Demonstrator for the London School Board, etc.

Stage 1. With 165 Illustrations and a large number of Examples. Fcp. 8vo., 1s. 6d.

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MAGNUS.—Works by SIR PHILIP MAGNUS, B.Sc., B.A.

LESSONS IN ELEMENTARY MECHANICS. Introductory to the study of Physical Science. Designed for the Use of Schools, and of Candidates for the London Matriculation and other Examinations. With numerous Exercises, Examples, Examination Questions, and Solutions, etc., from 1870-1895. With Answers, and 131 Woodcuts. Fcp. 8vo., 3s. 6d. Key for the use of Teachers only, price 5s. 3-1/2d.

HYDROSTATICS AND PNEUMATICS. Fcp. 8vo., 1s. 6d.; or, with Answers, 2s. The Worked Solutions of the Problems, 2s.

ROBINSON.—Works by the Rev. J. L. ROBINSON, M.A.

ELEMENTS OF DYNAMICS (Kinetics and Statics). With numerous Exercises. A Text-book for Junior Students. Crown 8vo., 6s.

A FIRST BOOK IN STATICS AND DYNAMICS. With numerous Examples and Answers. Crown 8vo, 3s. 6d. Sold separately: Statics, 2s.; Dynamics, 2s.

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ELEMENTARY STATICS. Crown 8vo., 3s.

ELEMENTARY HYDROSTATICS. Crown 8vo., 3s.

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TARLETON.—AN INTRODUCTION TO THE MATHEMATICAL THEORY OF ATTRACTION. By FRANCIS A. TARLETON, LL.D., Sc.D., Fellow of Trinity College, and Professor of Natural Philosophy in the University of Dublin. Crown 8vo., 10s. 6d.

TAYLOR.—Works by J. E. TAYLOR, M.A., B.Sc. (Lond.).

THEORETICAL MECHANICS, including Hydrostatics and Pneumatics. With 175 Diagrams and Illustrations, and 522 Examination Questions and Answers. Crown 8vo., 2s. 6d.

THEORETICAL MECHANICS—SOLIDS. With 163 Illustrations, 120 Worked Examples and over 500 Examples from Examination Papers, etc. Crown 8vo., 2s. 6d.

THEORETICAL MECHANICS.—FLUIDS. With 122 Illustrations, numerous Worked Examples, and about 500 Examples from Examination Papers, etc. Crown 8vo., 2s. 6d.

THORNTON.—THEORETICAL MECHANICS—SOLIDS. Including Kinematics, Statics and Kinetics. By ARTHUR THORNTON, M.A., F.R.A.S. With 200 Illustrations, 130 Worked Examples, and over 900 Examples from Examination Papers, etc. Crown 8vo., 4s. 6d.

TWISDEN.—Works by the Rev. JOHN F. TWISDEN, M.A.

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THEORETICAL MECHANICS. With 172 Examples, numerous Exercises, and 154 Diagrams. Crown 8vo., 8s. 6d.

WILLIAMSON.—INTRODUCTION TO THE MATHEMATICAL THEORY OF THE STRESS AND STRAIN OF ELASTIC SOLIDS. By BENJAMIN WILLIAMSON, D.Sc., F.R.S. Crown 8vo., 5s.

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WORTHINGTON.—DYNAMICS OF ROTATION: an Elementary Introduction to Rigid Dynamics. By A. M. WORTHINGTON, M.A., F.R.S. Crown 8vo., 4s. 6d.



OPTICS AND PHOTOGRAPHY.

ABNEY.—A TREATISE ON PHOTOGRAPHY. By Sir WILLIAM DE WIVELESLIE ABNEY, K.C.B., F.R.S., Principal Assistant Secretary of the Secondary Department of the Board of Education. With 115 Woodcuts. Fcp. 8vo., 3s. 6d.

GLAZEBROOK.—PHYSICAL OPTICS. By R. T. GLAZEBROOK, M.A., F.R.S., Principal of University College, Liverpool. With 183 Woodcuts of Apparatus, etc. Fcp. 8vo., 6s.

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 Illustrations. Crown 8vo., 6s.



SOUND, LIGHT, HEAT, AND THERMODYNAMICS.

CUMMING.—HEAT TREATED EXPERIMENTALLY. By LINNAEUS CUMMING, M.A. With 192 Illustrations. Crown 8vo., 4s. 6d.

DAY.—NUMERICAL EXAMPLES IN HEAT. By R. E. DAY, M.A. Fcp. 8vo., 3s. 6d.

EMTAGE.—LIGHT. By W. T. A. EMTAGE, M.A. With 232 Illustrations. Crown 8vo., 6s.

HELMHOLTZ.—ON THE SENSATIONS OF TONE AS A PHYSIOLOGICAL BASIS FOR THE THEORY OF MUSIC. By HERMANN VON HELMHOLTZ. Royal 8vo., 28s.

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 Assistant Master at Eton College. Crown 8vo., 9s.

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 Illustrations. Fcp. 8vo., 4s. 6d.

SMITH.—THE STUDY OF HEAT. By J. HAMBLIN SMITH M.A., of Gonville and Caius College, Cambridge. Crown 8vo., 3s.

TYNDALL.—Works by JOHN TYNDALL, D.C.L., F.R.S See p. 28.

WORMELL.—A CLASS-BOOK OF THERMODYNAMICS By RICHARD WORMELL, B.Sc., M.A. Fcp. 8vo., 1s. 6d.

WRIGHT.—Works by MARK R. WRIGHT, M.A.

SOUND, LIGHT, AND HEAT. With 160 Diagrams and Illustrations. Crown 8vo., 2s. 6d.

ADVANCED HEAT. With 136 Diagrams and numerous Examples and Examination Papers. Crown 8vo., 4s. 6d.



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., 2s. 6d.

CLERK.—THE GAS AND OIL ENGINE. By DUGALD CLERK, Associate Member of the Institution of Civil Engineers, Fellow of the Chemical Society, Member of the Royal Institution, Fellow of the Institute of Patent Agents. With 228 Illustrations. 8vo., 15s.

HOLMES.—THE STEAM ENGINE. By George C. V. Holmes, Whitworth Scholar, Secretary of the Institution of Naval Architects. With 212 Woodcuts. Fcp. 8vo., 6s.

NORRIS.—A PRACTICAL TREATISE ON THE 'OTTO' CYCLE GAS ENGINE. By WILLIAM NORRIS, M.I.Mech.E. With 207 Illustrations. 8vo., 10s. 6d.

RIPPER.—Works by WILLIAM RIPPER, Professor of Mechanical Engineering in the Sheffield Technical School.

STEAM. With 142 Illustrations. Crown 8vo., 2s. 6d.

STEAM ENGINE THEORY AND PRACTICE. With 438 Illustrations. 8vo., 9s.

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., 21s.

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 Institute of Naval Architects, etc. 8vo., 18s. net.



BUILDING CONSTRUCTION.

ADVANCED BUILDING CONSTRUCTION. By the Author of 'Rivingtons' Notes on Building Construction'. With 385 Illustrations. Crown 8vo., 4s. 6d.

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

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 Illustrations. Medium 8vo., 16s.

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, 10s. 6d.

Part II. Advanced Stage. With 479 Woodcuts, 10s. 6d.

Part III. Materials. Course for Honours. With 188 Woodcuts, 21s.

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



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., 7s. 6d.

CUMMING.—ELECTRICITY TREATED EXPERIMENTALLY. By LINNAEUS CUMMING, M.A. With 242 Illustrations. Cr. 8vo., 4s. 6d.

DAY.—EXERCISES IN ELECTRICAL AND MAGNETIC MEASUREMENTS, with Answers. By R. E. DAY. 12mo., 3s. 6d.

GORE.—THE ART OF ELECTRO-METALLURGY, including all known Processes of Electro-Deposition. By G. GORE, LL.D., F.R.S. With 56 Woodcuts. Fcp. 8vo., 6s.

HENDERSON.—Works by JOHN HENDERSON, D.Sc., F.R.S.E.

PRACTICAL ELECTRICITY AND MAGNETISM. With 159 Illustrations and Diagrams. Crown 8vo., 6s. 6d.

PRELIMINARY PRACTICAL MAGNETISM AND ELECTRICITY: A Text-book for Organised Science Schools and Elementary Evening Science Schools. Crown 8vo., 1s.

JENKIN.—ELECTRICITY AND MAGNETISM. By FLEEMING JENKIN, F.R.S.S., L. and E., M.I.C.E. With 177 Illustrations. Fcp. 8vo., 3s. 6d.

JOUBERT.—ELEMENTARY TREATISE ON ELECTRICITY AND MAGNETISM. By G. C. FOSTER, F.R.S., and E. ATKINSON, Ph.D. With 381 Illustrations. Crown 8vo., 7s. 6d.

JOYCE.—EXAMPLES IN ELECTRICAL ENGINEERING. By SAMUEL JOYCE, A.I.E.E. Crown 8vo., 5s.

LARDEN.—ELECTRICITY FOR PUBLIC SCHOOLS AND COLLEGES. By W. LARDEN, M.A. With 215 Illustrations. Cr. 8vo., 6s.

MACLEAN AND MARCHANT.—ELEMENTARY QUESTIONS IN ELECTRICITY AND MAGNETISM. With Answers. Compiled by MAGNUS MACLEAN, D.Sc., M.I.E.E., and E. W. MARCHANT, D.Sc., A.I.E.E. Crown 8vo., 1s.

MERRIFIELD.—MAGNETISM AND DEVIATION OF THE COMPASS. By JOHN MERRIFIELD, LL.D., F.R.A.S., 18mo., 2s. 6d.

PARR.—PRACTICAL ELECTRICAL TESTING IN PHYSICS AND ELECTRICAL ENGINEERING: being a Course suitable for First and Second Year Students and others. By G. D. ASPINALL PARR, Assoc. M.I.E.E., Head of the Electrical Engineering Department, Yorkshire College, Victoria University. With Illustrations. Crown 8vo.

POYSER.—Works by A. W. POYSER, M.A.

MAGNETISM AND ELECTRICITY. With 235 Illustrations. Crown 8vo., 2s. 6d.

ADVANCED ELECTRICITY AND MAGNETISM. With 317 Illustrations. Crown 8vo., 4s. 6d.

SLINGO AND BROOKER.—Works by W. SLINGO and A. BROOKER.

ELECTRICAL ENGINEERING FOR ELECTRIC LIGHT ARTISANS AND STUDENTS. With 359 Illustrations. Crown 8vo., 12s.

PROBLEMS AND SOLUTIONS IN ELEMENTARY ELECTRICITY AND MAGNETISM. With 67 Illustrations. Cr. 8vo., 2s.

TYNDALL.—Works by JOHN TYNDALL, D.C.L., F.R.S. See p. 28.



TELEGRAPHY AND THE TELEPHONE.

HOPKINS.—THE TELEPHONE: Outlines of the Development of Transmitters and Receivers. By WILLIAM J. HOPKINS, Professor of Physics in the Drexel Institute, Philadelphia; Author of 'Telephone Lines and their Properties,' etc. With 7 Full-page Illustrations and 39 Diagrams. Crown 8vo., 3s. 6d.

PREECE AND SIVEWRIGHT.—TELEGRAPHY. By Sir W. H. PREECE, K.C.B., F.R.S., V.P.Inst., C.E., etc., Engineer-in-Chief and Electrician, Post Office Telegraphs; and Sir J. SIVEWRIGHT, K.C.M.G., General Manager, South African Telegraphs. With 267 Illustrations. Fcp. 8vo., 6s.



ENGINEERING, STRENGTH OF MATERIALS, ETC.

ANDERSON.—THE STRENGTH OF MATERIALS AND STRUCTURES: the Strength of Materials as depending on their Quality and as ascertained by Testing Apparatus. By Sir J. ANDERSON, C.E., LL.D., F.R.S.E. With 66 Woodcuts. Fcp. 8vo., 3s. 6d.

BARRY.—RAILWAY APPLIANCES: a Description of Details of Railway Construction subsequent to the completion of the Earthworks and Structures. By Sir JOHN WOLFE BARRY, K.C.B., F.R.S., M.I.C.E. With 218 Woodcuts. Fcp. 8vo., 4s. 6d.

GOODMAN.—MECHANICS APPLIED TO ENGINEERING. By JOHN GOODMAN, Wh.Sch., A.M.I.C.E., M.I.M.E., Professor of Engineering in the Yorkshire College, Leeds (Victoria University). With 620 Illustrations and numerous Examples. Crown 8vo., 7s. 6d. net.

LOW.—A POCKET-BOOK FOR MECHANICAL ENGINEERS. By DAVID ALLAN LOW (Whitworth Scholar), M.I.Mech.E., Professor of Engineering, East London Technical College (People's Palace), London. With over 1000 specially prepared Illustrations. Fcp. 8vo., gilt edges, rounded corners, 7s. 6d.

SMITH.—GRAPHICS, or the Art of Calculation by Drawing Lines, applied especially to Mechanical Engineering. By ROBERT H. SMITH, Professor of Engineering, Mason College, Birmingham. Part I. With separate Atlas of 29 Plates containing 97 Diagrams. 8vo., 15s.

STONEY.—THE THEORY OF STRESSES IN GIRDERS AND SIMILAR STRUCTURES; with Practical Observations on the Strength and other Properties of Materials. By BINDON B. STONEY, LL.D., F.R.S., M.I.C.E. With 5 Plates and 143 Illust. in the Text. Royal 8vo., 36s.

UNWIN.—Works by W. CAWTHORNE UNWIN, F.R.S., B.S.C.

THE TESTING OF MATERIALS OF CONSTRUCTION. A Text-book for the Engineering Laboratory and a Collection of the Results of Experiment. With 5 Plates and 188 Illustrations and Diagrams in the Text. 8vo., 16s. net.

ON THE DEVELOPMENT AND TRANSMISSION OF POWER FROM CENTRAL STATIONS: being the Howard Lectures delivered at the Society of Arts in 1893. With 81 Diagrams. 8vo., 10s. net.

WARREN.—ENGINEERING CONSTRUCTION IN IRON, STEEL, AND TIMBER. By WILLIAM HENRY WARREN, Challis Professor of Civil and Mechanical Engineering, University of Sydney. With 13 Folding Plates and 375 Diagrams. Royal 8vo., 16s. net.



LONGMANS' CIVIL ENGINEERING SERIES. Edited by the Author of 'Notes on Building Construction'.

TIDAL RIVERS: their (1) Hydraulics, (2) Improvement, (3) Navigation. By W. H. WHEELER, M.Inst.C.E. With 75 Illustrations. Medium 8vo., 16s. net.

NOTES ON DOCKS AND DOCK CONSTRUCTION. By C. COLSON, M.Inst.C.E., Deputy Civil Engineer-in-Chief, Admiralty. With 365 Illustrations. Medium 8vo., 21s. net.

PRINCIPLES AND PRACTICE OF HARBOUR CONSTRUCTION. By WILLIAM SHIELD, F.R.S.E., M.Inst.C.E., and Executive Engineer, National Harbour of Refuge, Peterhead, N.B. With 97 Illustrations. Medium 8vo., 15s. net.

CALCULATIONS IN HYDRAULIC ENGINEERING: a Practical Text-Book for the use of Students, Draughtsmen and Engineers. By T. CLAXTON FIDLER, M.Inst.C.E., Professor of Engineering, University College, Dundee.

Part I. Fluid Pressure and the Calculation of its Effects in Engineering Structures. With numerous Illustrations and Examples. 8vo., 6s. 6d. net.

RAILWAY CONSTRUCTION. By W. H. MILLS, M.I.C.E., Engineer-in-Chief of the Great Northern Railway of Ireland. With 516 Illustrations and Diagrams. 8vo., 18s. net.



NAVAL ARCHITECTURE.

ATTWOOD.—TEXT-BOOK OF THEORETICAL NAVAL ARCHITECTURE: a Manual for Students of Science Classes and Draughtsmen Engaged in Shipbuilders' and Naval Architects' Drawing Offices. By EDWARD LEWIS ATTWOOD, Assistant Constructor, Royal Navy; Member of the Institution of Naval Architects. With 114 Diagrams. Crown 8vo., 7s. 6d.

WATSON.—NAVAL ARCHITECTURE: A Manual of Laying-off Iron, Steel and Composite Vessels. By THOMAS H. WATSON, Lecturer on Naval Architecture at the Durham College of Science, Newcastle-upon-Tyne. With numerous Illustrations. Royal 8vo., 15s. net.



MACHINE DRAWING AND DESIGN.

LOW.—Works by DAVID ALLAN LOW, Professor of Engineering, East London Technical College (People's Palace).

IMPROVED DRAWING SCALES. 6d. in case.

AN INTRODUCTION TO MACHINE DRAWING AND DESIGN. With 153 Illustrations and Diagrams. Crown 8vo, 2s. 6d.

LOW AND BEVIS.—A MANUAL OF MACHINE DRAWING AND DESIGN. By DAVID ALLAN LOW and ALFRED WILLIAM BEVIS, M.I.Mech.E. With 700 Illustrations. 8vo., 7s. 6d.

UNWIN.—THE ELEMENTS OF MACHINE DESIGN. By W. CAWTHORNE UNWIN, F.R.S.

Part I. General Principles, Fastenings, and Transmissive Machinery. With 304 Diagrams, etc. Fcp. 8vo., 6s.

Part II. Chiefly on Engine Details. With 174 Woodcuts. Fcp. 8vo., 4s. 6d.



WORKSHOP APPLIANCES, ETC.

NORTHCOTT.—LATHES AND TURNING, Simple, Mechanical and Ornamental. By W. H. NORTHCOTT. With 338 Illustrations. 8vo., 18s.

SHELLEY.—WORKSHOP APPLIANCES, including Descriptions of some of the Gauging and Measuring Instruments, Hand-cutting Tools, Lathes, Drilling, Planeing, and other Machine Tools used by Engineers. By C. P. B. SHELLEY, M.I.C.E. With an additional Chapter on Milling by R. R. LISTER. With 323 Woodcuts. Fcp. 8vo., 5s.



MINERALOGY, METALLURGY, ETC.

BAUERMAN.—Works by HILARY BAUERMAN, F.G.S.

SYSTEMATIC MINERALOGY. With 373 Woodcuts and Diagrams. Fcp. 8vo., 6s.

DESCRIPTIVE MINERALOGY. With 236 Woodcuts and Diagrams. Fcp. 8vo., 6s.

GORE.—THE ART OF ELECTRO-METALLURGY, including all known Processes of Electro-Deposition. By G. GORE, LL.D., F.R.S. With 56 Woodcuts. Fcp. 8vo., 6s.

HUNTINGTON AND McMILLAN—METALS: their Properties and Treatment. By A. K. HUNTINGTON, Professor of Metallurgy in King's College, London, and W. G. McMillan, Lecturer on Metallurgy in Mason's College, Birmingham. With 122 Illustrations. Fcp. 8vo., 7s. 6d.

RHEAD.—METALLURGY. An Elementary Text-Book. By E. C. RHEAD, Lecturer on Metallurgy at the Municipal Technical School, Manchester. With 94 Illustrations. Fcp. 8vo., 3s. 6d.

RUTLEY.—THE STUDY OF ROCKS: an Elementary Text-book of Petrology. BY F. RUTLEY, F.G.S. With 6 Plates and 88 Woodcuts. Fcp. 8vo., 4s. 6d.



ASTRONOMY, NAVIGATION, ETC.

ABBOTT.—ELEMENTARY THEORY OF THE TIDES: the Fundamental Theorems Demonstrated without Mathematics and the Influence on the Length of the Day Discussed. By T. K. ABBOTT, B.D., Fellow and Tutor, Trinity College, Dublin. Crown 8vo., 2s.

BALL.—Works by Sir ROBERT S. BALL, LL.D., F.R.S.

ELEMENTS OF ASTRONOMY. With 130 Figures and Diagrams. Fcp. 8vo., 6s. 6d.

A CLASS-BOOK OF ASTRONOMY. With 41 Diagrams. Fcp. 8vo., 1s. 6d.

DE CAMPIGNEULLES.—OBSERVATIONS TAKEN AT DUMRAON, BEHAR, INDIA, during the Eclipse of the 22nd January, 1898, by a Party of Jesuit Fathers of the Western Bengal Mission. By the Rev. V. DE CAMPIGNEULLES, S.J. With 14 Plates. 4to., 10s. 6d. net.

GILL.—TEXT-BOOK ON NAVIGATION AND NAUTICAL ASTRONOMY. By J. GILL, F.R.A.S., late Head Master of the Liverpool Corporation Nautical College. 8vo., 10s. 6d.

HERSCHEL.—OUTLINES OF ASTRONOMY. By Sir JOHN F. W. HERSCHEL, Bart., K.H., etc. With 9 Plates and numerous Diagrams. 8vo., 12s.

JORDAN.—ESSAYS IN ILLUSTRATION OF THE ACTION OF ASTRAL GRAVITATION IN NATURAL PHENOMENA. By WILLIAM LEIGHTON JORDAN. With Diagrams. 8vo., 9s.

LAUGHTON.—AN INTRODUCTION TO THE PRACTICAL AND THEORETICAL STUDY OF NAUTICAL SURVEYING. By JOHN KNOX LAUGHTON, M.A., F.R.A.S. With 35 Diagrams. Crown 8vo., 6s.

LOWELL.—MARS. By PERCIVAL LOWELL, Fellow American Academy, Member Royal Asiatic Society, Great Britain and Ireland, etc. With 24 Plates. 8vo., 12s. 6d.

MARTIN.—NAVIGATION AND NAUTICAL ASTRONOMY. Compiled by Staff Commander W. R. MARTIN, R.N. Royal 8vo., 18s.

MERRIFIELD.—A TREATISE ON NAVIGATION. For the Use of Students. By J. MERRIFIELD, LL.D., F.R.A.S., F.M.S. With Charts and Diagrams. Crown 8vo., 5s.

PARKER.—ELEMENTS OF ASTRONOMY. With Numerous Examples and Examination Papers. By GEORGE W. PARKER, M.A., of Trinity College, Dublin. With 84 Diagrams. 8vo., 5s. 6d. net.

WEBB.—CELESTIAL OBJECTS FOR COMMON TELESCOPES. By the Rev. T. W. WEBB, M.A., F.R.A.S. Fifth Edition, Revised and greatly Enlarged by the Rev. T. E. ESPIN, M.A., F.R.A.S. (Two Volumes.) Vol. I., with Portrait and a Reminiscence of the Author, 2 Plates, and numerous Illustrations. Crown 8vo., 6s. Vol. II., with numerous Illustrations. Crown 8vo., 6s. 6d.



WORKS BY RICHARD A. PROCTOR.

THE MOON: Her Motions, Aspect, Scenery, and Physical Condition. With many Plates and Charts, Wood Engravings, and 2 Lunar Photographs. Crown 8vo., 3s. 6d.

OTHER WORLDS THAN OURS: the Plurality of Worlds Studied Under the Light of Recent Scientific Researches. With 14 Illustrations; Map, Charts, etc. Crown 8vo., 3s. 6d.

OUR PLACE AMONG INFINITIES: a Series of Essays contrasting our Little Abode in Space and Time with the Infinities around us. Crown 8vo., 3s. 6d.

MYTHS AND MARVELS OF ASTRONOMY. Crown 8vo., 3s. 6d.

LIGHT SCIENCE FOR LEISURE HOURS: Familiar Essays on Scientific Subjects, Natural Phenomena, etc. Vols. I. and II. Crown 8vo., 5s. each. Vol. I. Cheap Edition. Crown 8vo., 3s. 6d.

THE ORBS AROUND US; Essays on the Moon and Planets, Meteors and Comets, the Sun and Coloured Pairs of Suns. Crown 8vo., 3s. 6d.

THE EXPANSE OF HEAVEN: Essays on the Wonders of the Firmament. Crown 8vo., 3s. 6d.

OTHER SUNS THAN OURS: a Series of Essays on Suns—Old, Young, and Dead. With other Science Gleanings. Two Essays on Whist, and Correspondence with Sir John Herschel. With 9 Star-Maps and Diagrams. Crown 8vo., 3s. 6d.

HALF-HOURS WITH THE TELESCOPE: a Popular Guide to the Use of the Telescope as a means of Amusement and Instruction. With 7 Plates. Fcp. 8vo., 2s. 6d.

NEW STAR ATLAS FOR THE LIBRARY, the School, and the Observatory, in Twelve Circular Maps (with Two Index-Plates). With an Introduction on the Study of the Stars. Illustrated by 9 Diagrams. Cr. 8vo., 5s.

THE SOUTHERN SKIES: a Plain and Easy Guide to the Constellations of the Southern Hemisphere. Showing in 12 Maps the position of the principal Star-Groups night after night throughout the year. With an Introduction and a separate Explanation of each Map. True for every Year. 4to., 5s.

HALF-HOURS WITH THE STARS: a Plain and Easy Guide to the Knowledge of the Constellations. Showing in 12 Maps the position of the principal Star-Groups night after night throughout the year. With Introduction and a separate Explanation of each Map. True for every Year. 4to., 3s. 6d.

LARGER STAR ATLAS FOR OBSERVERS AND STUDENTS. In Twelve Circular Maps, showing 6000 Stars, 1500 Double Stars, Nebulae, etc. With 2 Index-Plates. Folio, 15s.

THE STARS IN THEIR SEASONS: an Easy Guide to a Knowledge of the Star-Groups. In 12 Large Maps. Imperial 8vo., 5s.

ROUGH WAYS MADE SMOOTH. Familiar Essays on Scientific Subjects. Crown 8vo., 3s. 6d.

PLEASANT WAYS IN SCIENCE. Crown 8vo., 3s. 6d.

NATURE STUDIES. By R. A. PROCTOR, GRANT ALLEN, A. WILSON, T. FOSTER, and E. CLODD. Crown 8vo., 3s. 6d.

LEISURE READINGS. By R. A. PROCTOR, E. CLODD, A. WILSON, T. FOSTER, and A. C. RANYARD. Crown 8vo., 3s. 6d.



PHYSIOGRAPHY AND GEOLOGY.

BIRD.—Works by CHARLES BIRD, B.A.

ELEMENTARY GEOLOGY. With Geological Map of the British Isles, and 247 Illustrations. Crown 8vo., 2s. 6d.

ADVANCED GEOLOGY. A Manual for Students in Advanced Classes and for General Readers. With over 300 Illustrations, a Geological Map of the British Isles (coloured), and a set of Questions for Examination. Crown 8vo., 7s. 6d.

GREEN.—PHYSICAL GEOLOGY FOR STUDENTS AND GENERAL READERS. By A. H. GREEN, M.A., F.G.S. With 236 Illustrations. 8vo., 21s.

MORGAN.—ELEMENTARY PHYSIOGRAPHY. Treated Experimentally. By ALEX. MORGAN, M.A., D.Sc., F.R.S.E., Lecturer in Mathematics and Science, Church of Scotland Training College, Edinburgh. With 4 Maps and 243 Diagrams. Crown 8vo., 2s. 6d.

THORNTON.—Works by J. THORNTON, M.A.

ELEMENTARY PRACTICAL PHYSIOGRAPHY. Part I. With 215 Illustrations. Crown 8vo., 2s. 6d. Part II. With 98 Illustrations. Crown 8vo., 2s. 6d.

ELEMENTARY PHYSIOGRAPHY: an Introduction to the Study of Nature. With 13 Maps and 295 Illustrations. With Appendix on Astronomical Instruments and Measurements. Crown 8vo., 2s. 6d.

ADVANCED PHYSIOGRAPHY. With 6 Maps and 203 Illustrations. Crown 8vo., 4s. 6d.



NATURAL HISTORY AND GENERAL SCIENCE.

BEDDARD.—THE STRUCTURE AND CLASSIFICATION OF BIRDS. By FRANK E. BEDDARD, M.A., F.R.S., Prosector and Vice-Secretary of the Zoological Society of London. With 252 Illustrations. 8vo., 21s. net.

FURNEAUX.—Works by WILLIAM FURNEAUX, F.R.G.S.

THE OUTDOOR WORLD; or, The Young Collector's Hand-book. With 18 Plates, 16 of which are coloured, and 549 Illustrations in the Text. Crown 8vo., 6s. net.

LIFE IN PONDS AND STREAMS. With 8 Coloured Plates and 331 Illustrations in the Text. Crown 8vo., 6s. net.

BUTTERFLIES AND MOTHS (British). With 12 Coloured Plates and 241 Illustrations in the Text. Crown 8vo., 6s. net.

HUDSON.—BRITISH BIRDS. By W. H. HUDSON, C.M.Z.S. With 8 Coloured Plates from Original Drawings by A. THORBURN, and 8 Plates and 100 Figures by C. E. LODGE, and 3 Illustrations from Photographs. Crown 8vo., 6s. net.

NANSEN.—THE NORWEGIAN NORTH POLAR EXPEDITION, 1893-1896: Scientific Results. Edited by FRIDTJOF NANSEN. Volume I. With 44 Plates and numerous Illustrations in the Text. Demy 4to, 40s. net.

CONTENTS: 1. COLIN ARCHER: The Fram—2. J. F. POMPECKJ: The Jurassic Fauna of Cape Flora. With a Geological Sketch of Cape Flora and its Neighbourhood by FRIDTJOF NANSEN—3. A. G. NATHORST: Fossil Plants from Franz Josef Land—4. R. COLLETT and F. NANSEN: An Account of the Birds—5. G. O. SARS: Crustacea.

*** The aim of this Report (which will be published in English only) is to give, in a series of separate Memoirs, a complete account of the Scientific Results of the Norwegian Polar Expedition, 1893-1896. The whole work is estimated to form five or six Quarto Volumes, which it is hoped will be finished in the course of about two years.

STANLEY.—A FAMILIAR HISTORY OF BIRDS. By E. STANLEY, D.D., formerly Bishop of Norwich. With 160 Illustrations. Crown 8vo, 3s. 6d.



MANUFACTURES, TECHNOLOGY, ETC.

BELL.—JACQUARD WEAVING AND DESIGNING. By F. T. BELL. With 199 Diagrams. 8vo., 12s. net.

CALDER.—THE PREVENTION OF FACTORY ACCIDENTS: being an Account of Manufacturing Industry and Accident, and a Practical Guide to the Law on the Safe-guarding, Safe-working and Safe-construction of Factory Machinery, Plant and Premises. By JOHN CALDER, sometime Her Majesty's Inspector of Factories for the North of Scotland. With 20 Tables and 124 Illustrations. Crown 8vo., 7s. 6d. net.

LUPTON.—MINING. An Elementary Treatise on the Getting of Minerals. By ARNOLD LUPTON, M.I.C.E., F.G.S., etc. With 596 Diagrams and Illustrations. Crown 8vo., 9s. net.

MORRIS AND WILKINSON.—THE ELEMENTS OF COTTON SPINNING. By JOHN MORRIS and F. WILKINSON. With a Preface by Sir B. A. DOBSON, C.E., M.I.M.E. With 169 Diagrams and Illustrations. Crown 8vo., 7s. 6d. net.

SHARP.—BICYCLES AND TRICYCLES: an Elementary Treatise on their Design and Construction. With Examples and Tables. By ARCHIBALD SHARP, B.Sc. With 565 Illustrations and Diagrams. Cr. 8vo., 15s.

TAYLOR.—COTTON WEAVING AND DESIGNING. By JOHN T. TAYLOR. With 373 Diagrams. Crown 8vo., 7s. 6d. net.

WATTS.—AN INTRODUCTORY MANUAL FOR SUGAR GROWERS. By FRANCIS WATTS, F.C.S., F.I.C. With 20 Illustrations. Crown 8vo., 6s.



HEALTH AND HYGIENE.

ASHBY.—HEALTH IN THE NURSERY. By HENRY ASHBY, M.D., F.R.C.P., Physician to the Manchester Children's Hospital, and Lecturer on the Diseases of Children at the Owens College. With 25 Illustrations. Crown 8vo., 3s. 6d.

BUCKTON.—HEALTH IN THE HOUSE; Twenty-five Lectures on Elementary Physiology. By Mrs. C. M. BUCKTON. With 41 Woodcuts and Diagrams. Crown 8vo., 2s.

CORFIELD.—THE LAWS OF HEALTH. By W. H. CORFIELD, M.A., M.D. Fcp. 8vo., 1s. 6d.

NOTTER AND FIRTH.—Works by J. L. NOTTER, M.A., M.D., and R. H. FIRTH, F.R.C.S.

HYGIENE. With 95 Illustrations. Crown 8vo., 3s. 6d.

PRACTICAL DOMESTIC HYGIENE. With 83 Illustrations. Crown 8vo., 2s. 6d.

POORE.—Works by GEORGE VIVIAN POORE, M.D.

ESSAYS ON RURAL HYGIENE. Crown 8vo., 6s. 6d.

THE DWELLING-HOUSE. With 36 Illustrations. Crown 8vo., 3s. 6d.

WILSON.—A MANUAL OF HEALTH-SCIENCE: adapted for use in Schools and Colleges. By ANDREW WILSON, F.R.S.E., F.L.S., etc. With 74 Illustrations. Crown 8vo., 2s. 6d.



MEDICINE AND SURGERY.

ASHBY AND WRIGHT.—THE DISEASES OF CHILDREN, MEDICAL AND SURGICAL. By HENRY ASHBY, M.D., Lond., F.R.C.P., Physician to the General Hospital for Sick Children, Manchester; and G. A. WRIGHT, B.A., M.B. Oxon., F.R.C.S., Eng., Assistant-Surgeon to the Manchester Royal Infirmary, and Surgeon to the Children's Hospital. Enlarged and Improved Edition. With 192 Illustrations. 8vo., 25s.

BENNETT.—Works by WILLIAM H. BENNETT, F.R.C.S., Surgeon to St. George's Hospital; Member of the Board of Examiners, Royal College of Surgeons of England.

CLINICAL LECTURES ON VARICOSE VEINS OF THE LOWER EXTREMITIES. With 3 Plates. 8vo., 6s.

ON VARICOCELE; A PRACTICAL TREATISE. With 4 Tables and a Diagram. 8vo., 5s.

CLINICAL LECTURES ON ABDOMINAL HERNIA: chiefly in relation to Treatment, including the Radical Cure. With 12 Diagrams in the Text. 8vo., 8s. 6d.

ON VARIX, ITS CAUSES AND TREATMENT, WITH ESPECIAL REFERENCE TO THROMBOSIS: an Address delivered at the Inaugural Meeting of the Nottingham Medico-Chirurgical Society, Session 1898-99. 8vo., 3s. 6d.

BENTLEY.—A TEXT-BOOK OF ORGANIC MATERIA MEDICA. Comprising a Description of the Vegetable and Animal Drugs of the British Pharmacopoeia, with some others in common use. Arranged Systematically, and Especially Designed for Students. By ROBERT BENTLEY, M.R.C.S. Eng., F.L.S. With 62 Illustrations on Wood. Crown 8vo., 7s. 6d.

BRODIE.—THE ESSENTIALS OF EXPERIMENTAL PHYSIOLOGY. For the Use of Students. By T. G. BRODIE, M.D., Lecturer on Physiology, St. Thomas's Hospital Medical School. With 2 Plates and 177 Illustrations in the Text. Crown 8vo., 6s. 6d.

CABOT.—Works by RICHARD C. CABOT, M.D., Physician to Out-patients, Massachusetts General Hospital.

A GUIDE TO THE CLINICAL EXAMINATION OF THE BLOOD FOR DIAGNOSTIC PURPOSES. With 3 Coloured Plates and 28 Illustrations in the Text. 8vo., 16s.

THE SERUM DIAGNOSIS OF DISEASE. With 31 Temperature Charts and 9 Illustrations. Royal 8vo., 7s. 6d.

CELLI.—MALARIA, ACCORDING TO THE NEW RESEARCHES. By Prof. ANGELO CELLI, Director of the Institute of Hygiene, University of Rome. Translated from the Second Italian Edition by JOHN JOSEPH EYRE, M.R.C.P., L.R.C.S. Ireland, D.P.H. Cambridge. With an Introduction by Dr. PATRICK MANSON, Medical Adviser to the Colonial Office. 8vo., 10s. 6d.

CHEYNE AND BURGHARD.—A MANUAL OF SURGICAL TREATMENT. By W. WATSON CHEYNE, M.B., F.R.C.S., F.R.S., Professor of Surgery in King's College, London, Surgeon to King's College Hospital, etc.; and F. F. BURGHARD, M.D. and M.S., F.R.C.S., Teacher of Practical Surgery in King's College, London, Surgeon to King's College, Hospital (Lond.), etc.

Part I. The Treatment of General Surgical Diseases, including Inflammation, Suppuration, Ulceration, Gangrene, Wounds and their Complications, Infective Diseases and Tumours; the Administration of Anaesthetics. With 66 Illustrations. Royal 8vo., 10s. 6d. [Ready.

Part II. The Treatment of the Surgical Affections of the Tissues, including the Skin and Subcutaneous Tissues, the Nails, the Lymphatic Vessels and Glands, the Fasciae, Bursae, Muscles, Tendons and Tendon-sheaths, Nerves, Arteries and Veins. Deformities. With 141 Illustrations. Royal 8vo., 14s. [Ready.

Part III. The Treatment of the Surgical Affections of the Bones. Amputations. With 100 Illustrations. Royal 8vo., 12s.

Part IV. The Treatment of the Surgical Affections of the Joints (including Excisions) and the Spine. With 138 Illustrations. Royal 8vo., 14s.

Other Parts are in preparation.

CLARKE.—Works by J. JACKSON CLARKE, M.B. Lond., F.R.C.S., Assistant Surgeon at the North-west London and City Orthopaedic Hospitals, etc.

SURGICAL PATHOLOGY AND PRINCIPLES. With 194 Illustrations. Crown 8vo., 10s. 6d.

POST-MORTEM EXAMINATIONS IN MEDICO-LEGAL AND ORDINARY CASES. With Special Chapters on the Legal Aspects of Post-mortems, and on Certificates of Death. Fcp. 8vo., 2s. 6d.

COATS.—A MANUAL OF PATHOLOGY. By JOSEPH COATS, M.D., late Professor of Pathology in the University of Glasgow. Fourth Edition. Revised throughout and Edited by LEWIS R. SUTHERLAND, M. D., Professor of Pathology, University of St. Andrews. With 490 Illustrations. 8vo., 31s. 6d.

COOKE.—Works by THOMAS COOK, F.R.C.S. Eng., B.A., B.Sc., M.D., Paris.

TABLETS OF ANATOMY. Being a Synopsis of Demonstrations given in the Westminster Hospital Medical School. Eleventh Edition in Three Parts, thoroughly brought up to date, and with over 700 Illustrations from all the best Sources, British and Foreign. Post 4to. Part I. The Bones. 7s. 6d. net. Part II. Limbs, Abdomen, Pelvis. 10s. 6d. net. Part III. Head and Neck, Thorax, Brain. 10s. 6d. net.

APHORISMS IN APPLIED ANATOMY AND OPERATIVE SURGERY. Including 100 Typical viva voce Questions on Surface Marking, etc. Crown 8vo., 3s. 6d.

DISSECTION GUIDES. Aiming at Extending and Facilitating such Practical work in Anatomy as will be specially useful in connection with an ordinary Hospital Curriculum. 8vo., 10s. 6d.

CURTIS.—THE ESSENTIALS OF PRACTICAL BACTERIOLOGY: An Elementary Laboratory Book for Students and Practitioners. By H. J. CURTIS, B.S. and M.D. Lond., F.R.C.S., late Surgical Registrar, University College Hospital; formerly Assistant to the Professor of Pathology, University College, London. With 133 Illustrations. 8vo., 9s.

DAKIN.—A HANDBOOK OF MIDWIFERY. By WILLIAM RADFORD DAKIN, M.D., F.R.C.P., Obstetric Physician and Lecturer on Midwifery at St. George's Hospital, etc. With 394 Illustrations. Large crown 8vo., 18s.

DICKINSON.—Works by W. HOWSHIP DICKINSON, M.D. Cantab., F.R.C.P.

ON RENAL AND URINARY AFFECTIONS. With 12 Plates and 122 Woodcuts. Three Parts. 8vo., L3 4s. 6d.

THE TONGUE AS AN INDICATION OF DISEASE; being the Lumleian Lectures delivered March, 1888. 8vo., 7s. 6d.

OCCASIONAL PAPERS ON MEDICAL SUBJECTS, 1855-1896. 8vo., 12s.

MEDICINE OLD AND NEW. An Address Delivered on the Occasion of the Opening of the Winter Session, 1899-1900, at St. George's Hospital Medical School, on 2nd October, 1899. Crown 8vo., 2s. 6d.

DUCKWORTH.—Works by SIR DYCE DUCKWORTH, M.D., LL.D., Fellow and Treasurer of the Royal College of Physicians, etc.

THE SEQUELS OF DISEASE: being the Lumleian Lectures, 1896. 8vo., 10s. 6d.

THE INFLUENCE OF CHARACTER AND RIGHT JUDGMENT IN MEDICINE: the Harveian Oration, 1898. Post 4to. 2s. 6d.

ERICHSEN.—THE SCIENCE AND ART OF SURGERY; a Treatise on Surgical Injuries, Diseases, and Operations. By Sir JOHN ERIC ERICHSEN, Bart., F.R.S., LL.D. Edin., Hon. M.Ch. and F.R.C.S. Ireland. Illustrated by nearly 1000 Engravings on Wood. 2 vols. Royal 8vo., 48s.

FOWLER AND GODLEE.—THE DISEASES OF THE LUNGS. By JAMES KINGSTON FOWLER, M.A., M.D., F.R.C.P., Physician to the Middlesex Hospital and to the Hospital for Consumption and Diseases of the Chest, Brompton, etc.; and RICKMAN JOHN GODLEE, M.S., F.R.C.S., Fellow and Professor of Clinical Surgery, University College, London, etc.; With 160 Illustrations. 8vo., 25s.

GARROD.—Works by SIR ALFRED BARING GARROD, M.D., F.R.S., etc.

A TREATISE ON GOUT AND RHEUMATIC GOUT (RHEUMATOID ARTHRITIS). With 6 Plates, comprising 21 Figures (14 Coloured), and 27 Illustrations engraved on Wood. 8vo., 21s.

THE ESSENTIALS OF MATERIA MEDICA AND THERAPEUTICS. Crown 8vo., 12s. 6d.

GOODSALL AND MILES.—DISEASES OF THE ANUS AND RECTUM. By D. H. GOODSALL, F.R.C.S., Senior Surgeon, Metropolitan Hospital; Senior Surgeon (late House Surgeon), St. Mark's Hospital; and W. ERNEST MILES, F.R.C.S., Assistant Surgeon to the Cancer Hospital, Assistant Surgeon to the Gordon Hospital, etc. With Illustrations. (In Two Parts.) Part I. 8vo., 7s. 6d. net.

GRAY.—ANATOMY, DESCRIPTIVE AND SURGICAL. By HENRY GRAY, F.R.S., late Lecturer on Anatomy at St. George's Hospital. The Fourteenth Edition, re-edited by T. PICKERING PICK, Surgeon to St. George's Hospital, Inspector of Anatomy in England and Wales, late Member of the Court of Examiners, Royal College of Surgeons of England. With 705 large Woodcut Illustrations, a large proportion of which are Coloured, the Arteries being coloured red, the Veins blue, and the Nerves yellow. The attachments of the muscles to the bones, in the section on Osteology, are also shown in coloured outline. Royal 8vo., 36s.

HALLIBURTON.—Works by W. D. HALLIBURTON, M.D., F.R.S., F.R.C.P., Professor of Physiology in King's College, London.

A TEXT-BOOK OF CHEMICAL PHYSIOLOGY AND PATHOLOGY. With 104 Illustrations. 8vo., 28s.

ESSENTIALS OF CHEMICAL PHYSIOLOGY. With 77 Illustrations. 8vo., 5s.

LANG.—THE METHODICAL EXAMINATION OF THE EYE. Being Part I. of a Guide to the Practice of Ophthalmology for Students and Practitioners. By WILLIAM LANG, F.R.C.S. Eng., Surgeon to the Royal London Ophthalmic Hospital, Moorfields, etc. With 15 Illustrations. Crown 8vo., 3s. 6d.

LIVEING.—HANDBOOK ON DISEASES OF THE SKIN. With especial reference to Diagnosis and Treatment. By ROBERT LIVEING, M.A. and M.D., Cantab., F.R.C.P. Lond., etc., Physician to the Department for Diseases of the Skin at the Middlesex Hospital, etc. Fcp. 8vo., 5s.

LUFF.—TEXT-BOOK OF FORENSIC MEDICINE AND TOXICOLOGY. By ARTHUR P. LUFF, M.D., B.Sc. (Lond.), Physician in Charge of Out-Patients and Lecturer on Medical Jurisprudence and Toxicology in St. Mary's Hospital. With 13 full-page Plates (1 in colours) and 33 Illustrations in the Text. 2 vols. Crown 8vo., 24s.

NEWMAN.—ON THE DISEASES OF THE KIDNEY AMENABLE TO SURGICAL TREATMENT. Lectures to Practitioners. By DAVID NEWMAN, M.D., Surgeon to the Western Infirmary Out-Door Department; Pathologist and Lecturer on Pathology at the Glasgow Royal Infirmary; Examiner in Pathology in the University of Glasgow; Vice-President, Glasgow Pathological and Clinical Society. 8vo., 8s.

PICK.—SURGERY: a Treatise for Students and Practitioners. By T. PICKERING PICK, Consulting Surgeon to St. George's Hospital; Senior Surgeon to the Victoria Hospital for Children; H.M. Inspector of Anatomy in England and Wales. With 441 Illustrations. Medium 8vo., 25s.

POOLE.—COOKERY FOR THE DIABETIC. By W. H. and Mrs. POOLE. With Preface by Dr. PAVY. Fcap. 8vo., 2s. 6d.

QUAIN.—A DICTIONARY OF MEDICINE; Including General Pathology, General Therapeutics, Hygiene, and the Diseases of Women and Children. By Various Writers. Edited by RICHARD QUAIN, Bart., M.D. Lond., LL.D. Edin. (Hon.) F.R.S., Physician Extraordinary to H.M. the Queen, etc. Assisted by FREDERICK THOMAS ROBERTS, M.D. Lond., B.Sc., Fellow of the Royal College of Physicians, Fellow of University College, etc.; and J. MITCHELL BRUCE, M.A. Abdn., M.D. Lond., Fellow of the Royal College of Physicians of London, etc. 2 Vols. Medium 8vo., 40s. net.

QUAIN.—QUAIN'S (JONES) ELEMENTS OF ANATOMY. The Tenth Edition. Edited by EDWARD ALBERT SCHAeFER, F.R.S., Professor of Physiology in the University of Edinburgh; and GEORGE DANCER THANE, Professor of Anatomy in University College, London.

*** The several parts of this work form COMPLETE TEXT-BOOKS OF THEIR RESPECTIVE SUBJECTS.

VOL. I., PART I. EMBRYOLOGY. By E. A. SCHAeFER, F.R.S. With 200 Illustrations. Royal 8vo., 9s.

VOL. I., PART II. GENERAL ANATOMY OR HISTOLOGY By E. A. SCHAeFER, F.R.S. With 291 Illustrations. Royal 8vo., 12s. 6d.

VOL. II., PART I. OSTEOLOGY—ARTHROLOGY. By G. D. THANE. With 224 Illus. Royal 8vo., 11s.

VOL. II., PART II. MYOLOGY—ANGEIOLOGY. By G. D. THANE. With 199 Illustrations. Royal 8vo., 16s.

VOL. III., PART I. THE SPINAL CORD AND BRAIN. By E. A. SCHAeFER, F.R.S. With 139 Illustrations. Royal 8vo., 12s. 6d.

VOL. III., PART II. THE NERVES. By G. D. THANE. With 102 Illustrations. Royal 8vo., 9s.

VOL III., PART III. THE ORGANS OF THE SENSES. By E. A. SCHAeFER, F.R.S. With 178 Illustrations. Royal 8vo., 9s.

VOL. III, PART IV. SPLANCHNOLOGY. By E. A SCHAeFER, F.R.S and JOHNSON SYMINGTON, M.D. With 337 Illustrations. Royal 8vo., 16s.

APPENDIX. SUPERFICIAL AND SURGICAL ANATOMY. By Professor G. D. THANE and Professor R. J. GODLEE, M.S. With 29 Illustrations. Royal 8vo., 6s. 6d.

SCHAeFER.—THE ESSENTIALS OF HISTOLOGY. Descriptive and Practical. For the Use of Students. By E. A. SCHAeFER, F.R.S., Professor of Physiology in the University of Edinburgh; Editor of the Histological Portion of Quain's 'Anatomy'. Illustrated by nearly 400 Figures. Fifth Edition, Revised and Enlarged. 8vo., 8s. (Interleaved, 10s. 6d.)

SCHENK.—MANUAL OF BACTERIOLOGY. For Practitioners and Students. With especial reference to Practical Methods. By Dr. S. L. SCHENK, Professor (Extraordinary) in the University of Vienna. Translated from the German, with an Appendix, by W. R. DAWSON, B.A., M.D., Univ. Dub.; late University Travelling Prizeman in Medicine. With 100 Illustrations, some of which are coloured. 8vo., 10s. net.

SMALE AND COLYER. DISEASES AND INJURIES OF THE TEETH, including Pathology and Treatment: a Manual of Practical Dentistry for Students and Practitioners. By MORTON SMALE, M.R.C.S., L.S.A., L.D.S., Dental Surgeon to St. Mary's Hospital, Dean of the School, Dental Hospital of London, etc.; and J. F. COLYER, L.R.C.P., M.R.C.S., L.D.S., Assistant Dental Surgeon to Charing Cross Hospital, and Assistant Dental Surgeon to the Dental Hospital of London. With 334 Illustrations. Large crown 8vo., 15s.

SMITH (H. F.). THE HANDBOOK FOR MIDWIVES. By HENRY FLY SMITH, B.A., M.B. Oxon., M.R.C.S. 41 Woodcuts. Cr. 8vo., 5s.

STEVENSON.—WOUNDS IN WAR: the Mechanism of their Production and their Treatment. By Surgeon-Colonel W. F. STEVENSON (Army Medical Staff), A.B., M.B., M.Ch. Dublin University, Professor of Military Surgery, Army Medical School, Netley. With 86 Illustrations. 8vo., 18s.

TAPPEINER.—INTRODUCTION TO CHEMICAL METHODS OF CLINICAL DIAGNOSIS. By Dr. H. TAPPEINER, Professor of Pharmacology and Principal of the Pharmacological Institute of the University of Munich. Translated by EDMOND J. MCWEENEY, M.A., M.D. (Royal Univ. of Ireland), L.R.C.P.I., etc. Crown 8vo. 3s. 6d.

TIRARD.—DIPHTHERIA AND ANTITOXIN. By NESTOR TIRARD, M.D. Lond., Fellow of the Royal College of Physicians; Fellow of King's College, London; Professor of Materia Medica and Therapeutics at King's College; Physician to King's College Hospital; and Senior Physician to the Evelina Hospital for Sick Children. 8vo., 7s. 6d.

WALLER.—Works by AUGUSTUS D. WALLER, M.D., Lecturer on Physiology at St. Mary's Hospital Medical School, London; late External Examiner at the Victorian University.

AN INTRODUCTION TO HUMAN PHYSIOLOGY. Third Edition, Revised. With 314 Illustrations. 8vo., 18s.

LECTURES ON PHYSIOLOGY. First Series. On Animal Electricity. 8vo., 5s. net.

EXERCISES IN PRACTICAL PHYSIOLOGY. Part I. Elementary Physiological Chemistry. By AUGUSTUS D. WALLER and W. LEGGE SYMES. 8vo., 1s. net. Part II. in the press. Part III. Physiology of the Nervous System; Electro-Physiology. 8vo., 2s. 6d. net.

WEICHSELBAUM.—THE ELEMENTS OF PATHOLOGICAL HISTOLOGY. With Special Reference to Practical Methods. By Dr. ANTON WEICHSELBAUM, Professor of Pathology in the University of Vienna. Translated by W. R. DAWSON, M.D. (Dub.), Demonstrator of Pathology in the Royal College of Surgeons, Ireland, late Medical Travelling Prizeman of Dublin University, etc. With 221 Figures, partly in Colours, a Chromo-lithographic Plate, and 7 Photographic Plates. Royal 8vo., 21s. net.

WILKS AND MOXON.—LECTURES ON PATHOLOGICAL ANATOMY. By Sir SAMUEL WILKS, Bart., M.D., F.R.S., President of the Royal College of Physicians, and Physician Extraordinary to H. M. the Queen, and the late WALTER MOXON, M.D., F.R.C.P., Physician to, and some time Lecturer on Pathology at, Guy's Hospital. Third Edition, thoroughly Revised. By Sir SAMUEL WILKS, Bart., M.D., LL.D., F.R.S. 8vo., 18s.



VETERINARY MEDICINE, ETC.

STEEL.—Works by JOHN HENRY STEEL, F.R.C.V.S., F.Z.S., A.V.D., late Professor of Veterinary Science and Principal of Bombay Veterinary College.

A TREATISE ON THE DISEASES OF THE DOG; being a Manual of Canine Pathology. Especially adapted for the use of Veterinary Practitioners and Students. With 88 Illustrations. 8vo., 10s. 6d.

A TREATISE ON THE DISEASES OF THE OX; being a Manual of Bovine Pathology. Especially adapted for the use of Veterinary Practitioners and Students. With 2 Plates and 117 Woodcuts. 8vo., 15s.

A TREATISE ON THE DISEASES OF THE SHEEP; being a Manual of Ovine Pathology for the use of Veterinary Practitioners and Students. With Coloured Plate and 99 Woodcuts. 8vo., 12s.

OUTLINES OF EQUINE ANATOMY; a Manual for the use of Veterinary Students in the Dissecting Room. Crown 8vo., 7s. 6d.

FITZWYGRAM.—HORSES AND STABLES. By Major-General Sir F. FITZWYGRAM, Bart. With 56 pages of Illustrations. 8vo. 2s. 6d. net.

SCHREINER.—THE ANGORA GOAT. By S. C. CRONWRIGHT SCHREINER. With 26 Illustrations. 8vo., 10s. 6d.

YOUATT.—Works by WILLIAM YOUATT.

THE HORSE. With 52 Wood Engravings. 8vo., 7s. 6d.

THE DOG. With 33 Wood Engravings. 8vo., 6s.



PHYSIOLOGY, BIOLOGY, BACTERIOLOGY, AND ZOOLOGY. (And see MEDICINE AND SURGERY.)

ASHBY.—NOTES ON PHYSIOLOGY FOR THE USE OF STUDENTS PREPARING FOR EXAMINATION. By HENRY ASHBY, M.D. Lond., F.R.C.P., Physician to the General Hospital for Sick Children, Manchester; formerly Demonstrator of Physiology, Liverpool School of Medicine. With 148 Illustrations. 18mo., 5s.

BARNETT.—THE MAKING OF THE BODY: a Children's Book on Anatomy and Physiology. By Mrs. S. A. BARNETT. With 113 Illustrations. Crown 8vo., 1s. 9d.

BEDDARD.—Works by FRANK E. BEDDARD, M.A. Oxon.

ELEMENTARY PRACTICAL ZOOLOGY. With 93 Illustrations. Crown 8vo., 2s. 6d.

THE STRUCTURE AND CLASSIFICATION OF BIRDS. With 252 Illustrations. 8vo., 21s. net.

BIDGOOD.—A COURSE OF PRACTICAL ELEMENTARY BIOLOGY. By JOHN BIDGOOD, B.Sc, F.L.S. With 226 Illustrations. Crown 8vo., 4s. 6d.

BRAY.—PHYSIOLOGY AND THE LAWS OF HEALTH, in Easy Lessons for Schools. By Mrs. CHARLES BRAY. Fcp. 8vo., 1s.

BRODIE.—THE ESSENTIALS OF EXPERIMENTAL PHYSIOLOGY. For the Use of Students. By T. G. BRODIE, M.D., Lecturer on Physiology, St. Thomas's Hospital Medical School. With 2 Plates and 177 Illustrations in the Text. Crown 8vo., 6s. 6d.

FRANKLAND.—MICRO-ORGANISMS IN WATER. Together with an Account of the Bacteriological Methods involved in their Investigation. Specially designed for the use of those connected with the Sanitary Aspects of Water-Supply. By PERCY FRANKLAND, Ph.D., B.Sc. (Lond.), F.R.S., and Mrs. PERCY FRANKLAND. With 2 Plates and Numerous Diagrams. 8vo., 16s. net.

FURNEAUX.—HUMAN PHYSIOLOGY. By W. FURNEAUX, F.R.G.S. With 218 Illustrations. Crown 8vo., 2s. 6d.

HUDSON AND GOSSE.—THE ROTIFERA, or 'WHEEL-ANIMACULES'. By C. T. HUDSON, LL.D., and P. H. GOSSE, F.R.S. With 30 Coloured and 4 Uncoloured Plates. In 6 Parts. 4to., 10s. 6d. each. Supplement 12s. 6d. Complete in 2 vols., with Supplement, 4to., L4 4s.

LEUMANN.—NOTES ON MICRO-ORGANISMS PATHOGENIC TO MAN. By Surgeon-Captain B. H. S. LEUMANN, M.B., Indian Medical Service. 8vo., 3s.

MACALISTER.—Works by ALEXANDER MACALISTER, M.D.

AN INTRODUCTION TO THE SYSTEMATIC ZOOLOGY AND MORPHOLOGY OF VERTEBRATE ANIMALS. With 41 Diagrams 8vo., 10s. 6d.

ZOOLOGY OF THE INVERTEBRATE ANIMALS. With 59 Diagrams. Fcp. 8vo., 1s. 6d.

ZOOLOGY OF THE VERTEBRATE ANIMALS. With 77 Diagrams. Fcp. 8vo., 1s. 6d.

MOORE.—ELEMENTARY PHYSIOLOGY. By BENJAMIN MOORE, M.A., Lecturer on Physiology at the Charing Cross Hospital Medical School. With 125 Illustrations. Crown 8vo., 3s. 6d.

MORGAN.—ANIMAL BIOLOGY: an Elementary Text-Book. By C. LLOYD MORGAN, F.R.S., Principal of University College, Bristol. With 103 Illustrations. Crown 8vo., 8s. 6d.

SCHENK.—MANUAL OF BACTERIOLOGY, for Practitioners and Students, with Especial Reference to Practical Methods. By Dr. S. L. SCHENK. With 100 Illustrations, some Coloured. 8vo., 10s. net.

THORNTON.—HUMAN PHYSIOLOGY. By JOHN THORNTON, M.A. With 267 Illustrations, some Coloured. Crown 8vo., 6s.



BOTANY AND GARDENING.

AITKEN.—ELEMENTARY TEXT-BOOK OF BOTANY. By EDITH AITKEN, late Scholar of Girton College. With 400 Diagrams. Crown 8vo., 4s. 6d.

BENNETT AND MURRAY.—HANDBOOK OF CRYPTOGAMIC BOTANY. By ALFRED W. BENNETT, M.A., B.Sc., F.L.S., Lecturer on Botany at St. Thomas's Hospital; and GEORGE MURRAY, F.L.S., Keeper of Botany, British Museum. With 378 Illustrations. 8vo., 16s.

CROSS AND BEVAN.—CELLULOSE: an Outline of the Chemistry of the Structural Elements of Plants. With Reference to their Natural History and Industrial Uses. By CROSS and BEVAN (C. F. Cross, E. J. Bevan, and C. Beadle). With 14 Plates. Crown 8vo., 12s. net.

CURTIS.—A TEXT-BOOK OF GENERAL BOTANY. By CARLTON C. CURTIS, A.M., Ph.D., Tutor in Botany in Columbia University, U.S.A. With 87 Illustrations. 8vo., 12s. net.

DE TABLEY.—THE FLORA OF CHESHIRE. By the late LORD DE TABLEY (Hon. J. BYRNE LEICESTER WARREN, M.A.). Edited by SPENCER MOORE. With a Biographical Notice of the Author by Sir MOUNTSTUART GRANT DUFF. With a Map of Cheshire and a Photogravure Portrait. Crown 8vo., 10s. 6d. net.

EDMONDS.—Works by HENRY EDMONDS, B.Sc., London.

ELEMENTARY BOTANY. With 342 Illustrations. Cr. 8vo., 2s. 6d.

BOTANY FOR BEGINNERS. With 85 Illustrations. Fcp. 8vo., 1s. 6d.

FARMER.—A PRACTICAL INTRODUCTION TO THE STUDY OF BOTANY: Flowering Plants. By J. BRETLAND FARMER, F.R.S., M.A., Professor of Botany in the Royal College of Science, London. With 121 Illustrations. Crown 8vo, 2s. 6d.

KITCHENER.—A YEAR'S BOTANY. Adapted to Home and School Use. By FRANCES A. KITCHENER. With 195 Illustrations. Cr. 8vo., 5s.

LINDLEY AND MOORE.—THE TREASURY OF BOTANY. Edited by J. LINDLEY, M.D., F.R.S., and T. MOORE, F.L.S. With 20 Steel Plates and numerous Woodcuts. Two parts. Fcp. 8vo., 12s.

McNAB.—CLASS-BOOK OF BOTANY. By W. R. MCNAB.

MORPHOLOGY AND PHYSIOLOGY. With 42 Diagrams. Fcp. 8vo., 1s. 6d.

CLASSIFICATION OF PLANTS. With 118 Diagrams. Fcp. 8vo., 1s. 6d.

SORAUER.—A POPULAR TREATISE ON THE PHYSIOLOGY OF PLANTS. By Dr. PAUL SORAUER. Translated by F. E. WEISS, B.Sc., F.L.S. With 33 Illustrations. 8vo., 9s. net.

THOME AND BENNETT.—STRUCTURAL AND PHYSIOLOGICAL BOTANY. By OTTO WILHELM THOME and by ALFRED W. BENNETT, B.Sc., F.L.S. With Coloured Map and 600 Woodcuts. Fcp. 8vo., 6s.

TUBEUF.—DISEASES OF PLANTS INDUCED BY CRYPTOGAMIC PARASITES. Introduction to the Study of Pathogenic Fungi, Slime Fungi, Bacteria and Algae. By Dr. KARL FREIHERR VON TUBEUF, Privatdocent in the University of Munich. English Edition by WILLIAM G. SMITH, B.Sc., Ph.D., Lecturer on Plant Physiology, University of Edinburgh. With 330 Illustrations. Royal 8vo., 18s. net.

WATTS.—A SCHOOL FLORA. For the use of Elementary Botanical Classes. By W. MARSHALL WATTS, D.Sc. Lond. Cr, 8vo., 2s. 6d.

WEATHERS.—A PRACTICAL GUIDE TO GARDEN PLANTS. Containing Descriptions of the Hardiest and most Beautiful Annuals and Biennials, Hardy Herbaceous and Bulbous Perennials, Hardy Water and Bog Plants, Flowering and Ornamental Trees and Shrubs, Conifers, Hardy Ferns, Hardy Bamboos and other Ornamental Grasses; and also the best kinds of Fruit and Vegetables that may be grown in the Open Air in the British Islands, with Full and Practical Instructions as to Culture and Propagation. By JOHN WEATHERS, F.R.H.S., late Assistant Secretary to the Royal Horticultural Society, formerly of the Royal Gardens, Kew, etc. With 159 Diagrams. 8vo.



AGRICULTURE.

ADDYMAN.—AGRICULTURAL ANALYSIS. A Manual of Quantitative Analysis for Students of Agriculture. By FRANK T. ADDYMAN, B.Sc. (Lond.), F.I.C. With 49 Illustrations. Crown 8vo., 5s. net.

COLEMAN AND ADDYMAN.—PRACTICAL AGRICULTURAL CHEMISTRY. By J. BERNARD COLEMAN, A.R.C.Sc., F.I.C., and FRANK T. ADDYMAN, B.Sc. (Lond.), F.I.C. With 24 Illustrations. Crown 8vo., 1s. 6d. net.

WEBB.—Works by HENRY J. WEBB, Ph.D., B.Sc. (Lond.).

ELEMENTARY AGRICULTURE. A Text-Book specially adapted to the requirements of the Science and Art Department, the Junior Examination of the Royal Agricultural Society, and other Elementary Examinations. With 34 Illustrations. Crown 8vo., 2s. 6d.

AGRICULTURE. A Manual for Advanced Science Students. With 100 Illustrations. Crown 8vo., 7s. 6d. net.



WORKS BY JOHN TYNDALL, D.C.L., LL.D., F.R.S.

FRAGMENTS OF SCIENCE: a Series of Detached Essays, Addresses, and Reviews. 2 vols. Crown 8vo., 16s.

Vol. I.—The Constitution of Nature—Radiation—On Radiant Heat in Relation to the Colour and Chemical Constitution of Bodies—New Chemical Reactions produced by Light—On Dust and Disease—Voyage to Algeria to observe the Eclipse—Niagara—The Parallel Roads of Glen Roy—Alpine Sculpture—Recent Experiments on Fog-Signals—On the Study of Physics—On Crystalline and Slaty Cleavage—On Paramagnetic and Diamagnetic Forces—Physical Basis of Solar Chemistry—Elementary Magnetism—On Force—Contributions to Molecular Physics—Life and Letters of FARADAY—The Copley Medallist of 1870—The Copley Medallist of 1871—Death by Lightning—Science and the Spirits.

Vol. II.—Reflections on Prayer and Natural Law—Miracles and Special Providences—On Prayer as a Form of Physical Energy—Vitality—Matter and Force—Scientific Materialism—An Address to Students—Scientific Use of the Imagination—The Belfast Address—Apology for the Belfast Address—The Rev. JAMES MARTINEAU and the Belfast Address—Fermentation, and its Bearings on Surgery and Medicine—Spontaneous Generation—Science and Man—Professor Virchow and Evolution—The Electric Light.

NEW FRAGMENTS. Crown 8vo., 10s. 6d.

CONTENTS.—The Sabbath—Goethe's 'Farbenlehre'—Atoms, Molecules, and Ether Waves—Count Rumford—Louis Pasteur, his Life and Labours—The Rainbow and its Congeners—Address delivered at the Birkbeck Institution on October 22, 1884—Thomas Young—Life in the Alps—About Common Water—Personal Recollections of Thomas Carlyle—On Unveiling the Statue of Thomas Carlyle—On the Origin, Propagation, and Prevention of Phthisis—Old Alpine Jottings—A Morning on Alp Lusgen.

LECTURES ON SOUND. With Frontispiece of Fog-Syren, and 203 other Woodcuts and Diagrams in the Text. Crown 8vo., 10s. 6d.

HEAT, A MODE OF MOTION. With 125 Woodcuts and Diagrams. Crown 8vo., 12s.

LECTURES ON LIGHT DELIVERED IN THE UNITED STATES IN 1872 AND 1873. With Portrait, Lithographic Plate, and 59 Diagrams. Crown 8vo., 5s.

ESSAYS ON THE FLOATING MATTER OF THE AIR IN RELATION TO PUTREFACTION AND INFECTION. With 24 Woodcuts. Crown 8vo., 7s. 6d.

RESEARCHES ON DIAMAGNETISM AND MAGNECRYSTALLIC ACTION; including the Question of Diamagnetic Polarity. Crown 8vo., 12s.

NOTES OF A COURSE OF NINE LECTURES ON LIGHT, delivered at the Royal Institution of Great Britain, 1869. Crown 8vo., 1s. 6d.

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INTRODUCTION TO THE STUDY OF INORGANIC CHEMISTRY. By WILLIAM ALLEN MILLER, M.D., LL.D., F.R.S. With 72 Illustrations. 3s. 6d.

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MAGNETISM AND ELECTRICITY. By ARTHUR WILLIAM POYSER, M.A. With 317 Illustrations. Crown 8vo., 4s. 6d.

INORGANIC CHEMISTRY, THEORETICAL AND PRACTICAL. A Manual for Students in Advanced Classes of the Science and Art Department. By WILLIAM JAGO, F.C.S., F.I.C. With Plate of Spectra and 78 Woodcuts. Crown 8vo., 4s. 6d.

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HUMAN PHYSIOLOGY: a Manual for Students in advanced Classes of the Science and Art Department. By JOHN THORNTON, M.A. With 268 Illustrations, some of which are Coloured, and a set of Questions for Examination. Crown 8vo., 6s.

PHYSIOGRAPHY. By JOHN THORNTON, M.A. With 6 Maps, 203 Illustrations, and Coloured Plate of Spectra. Crown 8vo., 4s. 6d.

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GEOMETRICAL DRAWING FOR ART STUDENTS. Embracing Plane Geometry and its Applications, the Use of Scales, and the Plans and Elevations of Solids, as required for the Examinations of the Science and Art Department. By I. H. MORRIS. Crown 8vo., 1s. 6d.

TEXT-BOOK ON PRACTICAL, SOLID, OR DESCRIPTIVE GEOMETRY. By DAVID ALLAN LOW (Whitworth Scholar). Part I. Crown 8vo., 2s. Part II. Crown 8vo., 3s.

AN INTRODUCTION TO MACHINE DRAWING AND DESIGN. By DAVID ALLAN LOW. With 153 Illustrations. Crown 8vo., 2s. 6d.

BUILDING CONSTRUCTION AND DRAWING. By EDWARD J. BURRELL. With 308 Illustrations and Working Drawings. Crown 8vo., 2s. 6d.

AN ELEMENTARY COURSE OF MATHEMATICS. Containing Arithmetic; Euclid (Book I., with Deductions and Exercises); and Algebra. Crown 8vo., 2s. 6d.

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THEORETICAL MECHANICS—SOLIDS. By J. E. TAYLOR, M.A., B.Sc. (Lond.). With 163 Illustrations, 120 Worked Examples, and over 500 Examples from Examination Papers, etc. Crown 8vo., 2s. 6d.

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A MANUAL OF MECHANICS. With 138 Illustrations and Diagrams, and 188 Examples taken from Examination Papers, with Answers. By T. M. GOODEVE, M.A. Crown 8vo., 2s. 6d.

SOUND, LIGHT, AND HEAT. By MARK R. WRIGHT, M.A. With 160 Diagrams and Illustrations. Crown 8vo., 2s. 6d.

METALLURGY: an Elementary Text-Book. By E. L. RHEAD. With 94 Illustrations. Crown 8vo., 3s. 6d.

PHYSICS. Alternative Course. By MARK R. WRIGHT, M.A. With 242 Illustrations. Crown 8vo., 2s. 6d.

MAGNETISM AND ELECTRICITY. By A. W. POYSER, M.A. With 235 Illustrations. Crown 8vo., 2s. 6d.

ORGANIC CHEMISTRY: the Fatty Compounds. By R. LLOYD WHITELEY, F.I.C., F.C.S. With 45 Illustrations. Crown 8vo., 3s. 6d.

INORGANIC CHEMISTRY, THEORETICAL AND PRACTICAL. By WILLIAM JAGO, F.C.S., F.I.C. With 63 Illustrations and numerous Questions and Exercises. Fcp. 8vo., 2s. 6d.

AN INTRODUCTION TO PRACTICAL INORGANIC CHEMISTRY. By WILLIAM JAGO, F.C.S., F.I.C. Crown 8vo., 1s. 6d.

PRACTICAL CHEMISTRY: the Principles of Qualitative Analysis. By WILLIAM A. TILDEN, D.Sc. Fcp. 8vo., 1s. 6d.

ELEMENTARY INORGANIC CHEMISTRY. By WILLIAM FURNEAUX, F.R.G.S. Crown 8vo., 2s. 6d.

ELEMENTARY GEOLOGY. By CHARLES BIRD, B.A., F.G.S. With Coloured Geological Map of the British Islands, and 247 Illustrations. Crown 8vo., 2s. 6d.

THE END