Large numbers of newspapers will in futurebe sold from "penny-in-the-slot" machines. The system to be adopted for this particular purpose will doubtless differ in some important respects from that which has been successful in the vending of small articles such as sweetmeats and cigarettes. The newspapers may be hung on light bars within the machine, these being supported at the end by a carefully-adjusted cross piece, which, on the insertion of a penny in the slot, moves just sufficiently to permit the end of one bar with its newspaper to drop, and to precipitate the latter on to a table forming the front of the machine. When the full complement of newspapers has been exhausted the slot is automatically closed.
Some of the newspapers of the twentieth century will be given away gratis, and will be, for the most part, owned by the principal advertisers. This is the direction in which journalistic property is now tending, and at any juncture steps might be taken, in one or other of the great centres of newspaper enterprise, which would precipitate the ultimate movement. Hardly any one who buys a half-penny paper to-day imagines for a moment that there is any actual profit on the article.
It is understood on all hands that the advertisers keep the newspapers going and that the arrangement is mutually beneficial. Not thateither party can dictate to the other in matters outside of its own province. The effect is simply to permit the great public to purchase its news practically for the price of the paper and ink on which it is conveyed; the condition being that the said public will permit its eyes to be greeted with certain announcements placed in juxtaposition to the news and comments.
Sooner or later, therefore, the idea will occur to some of the leading advertisers to form a syndicate and give to the people a small broadsheet containing briefly the daily narrative. The ponderous newspapers of the latter end of the nineteenth century—filled full of enough of linotype matter to occupy more than the whole day of the subscriber in their perusal—will be to a large extent dispensed with; and the new art of journalism will consist in saying things as briefly—not as lengthily—as possible.
The ownership of machinery and of all the varied appliances in the evolution of which inventive genius is exercised is a matter which, strictly speaking, does not belong to the domain of this work. Nevertheless, in endeavouring to forecast the progress of invention during the twentieth century, it is necessary to take count of the risks involved in the inauguration of any public and social economical systems which might tend to stifle freedom of thought and to discourage the efforts of those who have suggestions of industrial improvements to make.
It is plain that those economic forces which prevent the inventor from having his ideas tested must to that extent retard the progress of industrial improvement. Thousands of men, who imagine that they possess the inventive talent in a highly developed degree, are either crack-brained enthusiasts or else utterly unpractical men whose services would never be worth anything at all in the work of attackingdifficult mechanical problems. It is in the task of discriminating between this class and the true inventors that many industrial organizers fail. Any economic system which offers inducements to the directors of industrial enterprises to shirk the onerous, and at times very irksome, duty of sifting out the good from the bad must stand condemned not only on account of its wastefulness, but by reason of its baneful effects in the discouragement of inventive genius.
Considerations of this kind lead to the conclusion that during the twentieth century the spread of collectivist or socialistic ideas, and the adoption of methods of State and municipal control of production and transport may have an important bearing upon the progress of civilisation through the adoption of new inventions. Many thinking men and women of the present generation are inclined to believethetwentieth century inventionpar excellencewill be the bringing of all the machinery of production, transport and exchange under the official control of persons appointed by the State or by the municipality, and therefore amenable to the vote of the people. Projects of collectivism are in the air, and high hopes are entertained that the twentieth century will be far more distinctively marked by the revolutionwhich it will witness in the social and industrial organisation of the people than in the improvements effected in the mechanical and other means for extending man's powers over natural forces.
The average official naturally wishes to retain his billet. That is the main motive which governs nearly all his official acts; and in the treatment which he usually accords to the inventor he shows this anxiety perhaps more clearly than in any other class of the actions of his administration. He wants to make no mistakes, but whether he ever scores a distinct and decided success is comparatively a matter of indifference to him. So long as he does not give a handle to his enemies to be used against him, he is fairly contented to go on from year to year in a humdrum style.
Even a man of fine feeling and progressive ideas soon experiences the numbing effects of the routine life after he has been a few years in office. He knows that he will be judged rather on the negative than on the positive principle, that is to say, for the things which it is accounted he ought not to have done rather than for the more enterprising good things which it is admitted he may have done.
Now any one who undertakes to encourage invention must necessarily make mistakes. Hemay 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 publicauthorities 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 successfulinventions 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 workpro 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 bredby 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 adoptionof avia mediawhich 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 outquasi-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 theevanescent 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 peopleout 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.
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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.
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.
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GUTHRIE.—MOLECULAR PHYSICS AND SOUND. ByF. Guthrie, Ph.D. With 91 Diagrams. Fcp. 8vo., 1s.6d.
HELMHOLTZ.—POPULAR LECTURES ON SCIENTIFIC SUBJECTS. ByHermann von Helmholtz. Translated byE. 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.
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MACLEAN.—EXERCISES IN NATURAL PHILOSOPHY. ByMagnus 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 byRobert 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. ByJ. H. van t'Hoff. Second, Revised, and Enlarged Edition. With a Preface byJohannes Wislicenus, Professor of Chemistry at the University of Leipzig; and an Appendix 'Stereo-chemistry among Inorganic Substances,' byAlfred Werner, Professor of Chemistry at the University of Zürich. Translated and Edited byArnold 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. ByA. M. Worthington, M.A., F.R.S. With Illustrations. Crown 8vo., 4s.6d.WRIGHT.—ELEMENTARY PHYSICS. ByMark R. Wright, M.A., Professor of Normal Education, Durham College of Science. With 242 Illustrations. Crown 8vo., 2s.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.
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.
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WRIGHT.—ELEMENTARY PHYSICS. ByMark R. Wright, M.A., Professor of Normal Education, Durham College of Science. With 242 Illustrations. Crown 8vo., 2s.6d.
BALL.—A CLASS-BOOK OF MECHANICS. By SirR. S. Ball, LL.D. 89 Diagrams. Fcp. 8vo., 1s.6d.GELDARD.—STATICS AND DYNAMICS. ByC. 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. ByJohn 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. ByW. 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.Stage 2. With 122 Illustrations. Fcp. 8vo., 1s.6d.Stage 3. With 103 Illustrations. Fcp. 8vo., 1s.
BALL.—A CLASS-BOOK OF MECHANICS. By SirR. S. Ball, LL.D. 89 Diagrams. Fcp. 8vo., 1s.6d.
GELDARD.—STATICS AND DYNAMICS. ByC. 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.
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. ByJohn 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. ByW. 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.Stage 2. With 122 Illustrations. Fcp. 8vo., 1s.6d.Stage 3. With 103 Illustrations. Fcp. 8vo., 1s.
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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.SMITH.—Works by J. HAMBLIN SMITH, M.A.ELEMENTARY STATICS. Crown 8vo., 3s.ELEMENTARY HYDROSTATICS. Crown 8vo., 3s.KEY TO STATICS AND HYDROSTATICS. Crown 8vo., 6s.TARLETON.—AN INTRODUCTION TO THE MATHEMATICAL THEORY OF ATTRACTION. ByFrancis 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. ByArthur 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.
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.
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.
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.
SMITH.—Works by J. HAMBLIN SMITH, M.A.
ELEMENTARY STATICS. Crown 8vo., 3s.ELEMENTARY HYDROSTATICS. Crown 8vo., 3s.KEY TO STATICS AND HYDROSTATICS. Crown 8vo., 6s.
ELEMENTARY STATICS. Crown 8vo., 3s.
ELEMENTARY HYDROSTATICS. Crown 8vo., 3s.
KEY TO STATICS AND HYDROSTATICS. Crown 8vo., 6s.
TARLETON.—AN INTRODUCTION TO THE MATHEMATICAL THEORY OF ATTRACTION. ByFrancis 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.
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. ByArthur 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.PRACTICAL MECHANICS; an Elementary Introduction to their Study. With 855 Exercises, and 184 Figures and Diagrams. Crown 8vo., 10s.6d.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. ByBenjamin Williamson, D.Sc., F.R.S. Crown 8vo., 5s.WILLIAMSONandTARLETON.—AN ELEMENTARY TREATISE ON DYNAMICS. Containing Applications to Thermodynamics, with numerous Examples. ByBenjamin Williamson, D.Sc., F.R.S., andFrancis A. Tarleton, LL.D. Crown 8vo., 10s.6d.WORTHINGTON.—DYNAMICS OF ROTATION: an Elementary Introduction to Rigid Dynamics. ByA. M. Worthington, M.A., F.R.S. Crown 8vo., 4s.6d.
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PRACTICAL MECHANICS; an Elementary Introduction to their Study. With 855 Exercises, and 184 Figures and Diagrams. Crown 8vo., 10s.6d.THEORETICAL MECHANICS. With 172 Examples, numerous Exercises, and 154 Diagrams. Crown 8vo., 8s.6d.
PRACTICAL MECHANICS; an Elementary Introduction to their Study. With 855 Exercises, and 184 Figures and Diagrams. Crown 8vo., 10s.6d.
THEORETICAL MECHANICS. With 172 Examples, numerous Exercises, and 154 Diagrams. Crown 8vo., 8s.6d.
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WORTHINGTON.—DYNAMICS OF ROTATION: an Elementary Introduction to Rigid Dynamics. ByA. M. Worthington, M.A., F.R.S. Crown 8vo., 4s.6d.
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EMTAGE.—LIGHT. ByW. 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. ByHermann von Helmholtz. Royal 8vo., 28s.MADAN.—AN ELEMENTARY TEXT-BOOK ON HEAT For the Use of Schools. ByH. 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. ByJ. Clerk Maxwell, M.A., F.R.SS., L. and E. With Corrections and Additions by LordRayleigh. With 38 Illustrations. Fcp. 8vo., 4s.6d.SMITH.—THE STUDY OF HEAT. ByJ. Hamblin SmithM.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 ByRichard 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.
EMTAGE.—LIGHT. ByW. 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. ByHermann von Helmholtz. Royal 8vo., 28s.
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MAXWELL.—THEORY OF HEAT. ByJ. Clerk Maxwell, M.A., F.R.SS., L. and E. With Corrections and Additions by LordRayleigh. With 38 Illustrations. Fcp. 8vo., 4s.6d.
SMITH.—THE STUDY OF HEAT. ByJ. Hamblin SmithM.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 ByRichard 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.
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.