to children. Some of the biographies written for juvenile readers by distressingly conscientious and learned people fall very wide of the mark. But Miss Cather is of those who know what children like-not simplicity only, but detail, colour, and incident as well, and these are found in stories which read with delightful ease, despite the labour of research that has evidently gone to their making. These tales of the early life of Titian, Mozart, Murillo, and others form a charming little gift-book for any boy or girl. The Lawn Tennis Tip Book. By E. E. Beamish. (2s. net. Mills & Boon.) Splashing into Society. Stories and Sketches. By IRIS BARRY. (4s. 6d. net. Constable.) Cassell's Children's Book of Knowledge. (1s. 3d. net each. Parts Alciphron Letters from the Country and the Town of Fishermen, E. H. BLAKENEY. (4d. Blackie.) Manual of French Pronunciation and Diction: Based on the Notation of the Association Phonétique Internationale. By J. W. JACK. (7s. 6d. Harrap.) This manual gives the impression of being the work of an American student of phonetics. In the United States the teachers of French have in comparatively recent years come to realize the importance of the subject, and have thrown themselves into it with characteristic energy. Sometimes, however, their knowledge of theory seems to be rather in advance of their practical experience; and in particular they do not appear to have studied the phonetics of English with sufficient thoroughThese features are noticeable in Mr. Jack's book, admirable as it is in many other respects. He has taken great pains in the matter of orthoepy; and after reading through his book ness. one wonders, once again, how many Frenchmen know how to pronounce all the words it contains, and cannot help sympathizing with the earnest student who is confronted with them. It is in the sections dealing with the production of individual sounds that a certain weakness appears, and that the explanations are not always as full and clear as might be desired by the English student. The exercises are plentiful, and are like those in Mr. Dumville's well-known book, with which this manual naturally has other features of resemblance. The part of it which deals with "words in combination," i.e. in connected speech, is on the whole the best executed and most helpful. It deals with elision, tonic accent, liaison, emphatic accent, assimilation, intonation, and rhythm. Only the section on intonation might well have been fuller, as this is no less important than difficult; and it is a pity that no attempt has been made to contrast effectively the intonation of French and English. The bibliographical section calls for revision; it is inaccurate in minor details, and omits some useful books, while including some old ones that are hardly obtainable. From Montaigne to Molière: or, The Preparation for the Classical Age of French Literature. By A. TILLEY. Second Edition. Revised. (8s. 6d. net. Cambridge University Press.) Mr. Arthur Tilley has laid all modern language teachers under a great debt to him for his excellent text-books on French literature. The present book, which is a continuation of his 'Literature of the French Renaissance," was published first in 1908. This second edition does not differ materially from the first; it is an account of the forces which prepared the way for the classical age, and its chief features are Malherbe, Corneille, Descartes, and Pascal. Teachers will be glad to hear that Messrs. Tilley and Stewart will soon produce a book on the classical movement, similar to their " Romantic Movement in French Literature,' ," which is composed of carefully selected texts of the period, with a running commentary. It is regrettable that the present high costs of production forbid all but wealthy schools from using this excellent series. Cambridge Plain Texts. La Bruyère: Les Caractères ou Les Mœurs de ce Siècle. (Is. 3d. Cambridge University Press.) André Lichtenberger. Huit Épisodes Choisis: Extraits de Mon Petit Trott. Edited by Prof. G. ROTH. (2s. 3d. Clarendon Press.) In these days when all examinations in French contain portions of unseen translation, it is useful to have a set of texts, not too long or too expensive, so that senior pupils can read a variety of authors and not merely extracts of a few lines which lack interest and continuity. The Plain Texts have no notes and only a short introduction. The new volume in the Oxford Junior French Series is well chosen. Trott is a well-known figure in French nurseries, and even grown-ups have been known to laugh at and with him. But in the note on Nelson it might have been well to add that he did not lose his arm at Trafalgar, as Trott's English governess asserts. Senior and Junior French Test Papers. By A. R. FLORIAN. (IS. each. Rivingtons.) French Intonation Exercises. By H. KLINGHARDT and M. DE French Composition from French Models. By R. A. SPENCER. (2s. 6d. Edward Arnold.) Les Pierres Qui Parlent: Une Visite à Paris. By JETTA S. WOLFF. (2s. 6d. Edward Arnold.) A Short History of French Literature. By W. H. HUDSON. (4s. 6d. net. Bell.) Fortuna. By E. P. ESCRICH. Edited with Notes, Direct-Method Exercises and Vocabulary by Prof. E. C. HILLS and LOUISE REINHARDT. (2s. 6d. Heath.) German Idioms Simplified. By OTTO BRANDT. (Is. 6d. Harrap.) La Pensionnaire: Comédie en un Acte. Par J. ROSELY. (6d. Blackie.) MUSIC. The Oxford Choral Songs. The issue by the Oxford University Press of a series of nearly sixty numbers, entitled as above, is an event of importance to teachers, not only of singing-classes, but also of soloists. The Series is edited by Dr. W. G. Whittaker, and its high musical quality is therefore guaranteed. It includes songs for unison, two-andthree-part singing by the most skilled craftsmen in this kind, with delightful words, the choice of which ranges from the Greek Anthology to De la Mare. Several of the numbers could well be sung as solos, duets, or trios; while the harmonic idioms employed include the simple as well as the distinctly modern. Frank Bridge's "Spring Song and "Pan's Holiday," Armstrong Gibbs's "Slow, horses, slow," Stanford's "Virtue," Peter Warlock's "Sleep" (a lovely song), and Whittaker's Stay in town are representative samples of the excellence of the series. Another section has been arranged by Messrs. Peter Warlock and Philip Wilson from the fascinating Lute Songs of the sixteenth and seventeenth centuries; Dr. Whittaker has made a two-part Cantata, "The Moon,' from Purcell; and also contributes editions of four Handel Arias. The series is a fine achievement, and every teacher of singing should obtain the prospectus and specimens. The voice parts throughout are in both notations. " The same house also sends Scholes's three "Books of the Great Musicians bound in one volume. A useful gift-book. Other interesting singing-class music comes from the pens of Ernest Austin (Larway), Granville Bantock, T. F. Dunhill, George Dyson, Henry Ley, Roy Thompson, and other skilful composers (Edward Arnold). Dream Themes. Book One. Six Poems for the Pianoforte. By E. AUSTIN. (2s. 6d. Larway.) Calling out the Fairies: Tone Stanza, No. 23. By E. AUSTIN. (Is. 6d. net. Larway.) " Mr. Austin's Dream Themes are fairly difficult, but will repay study; his Tone Stanza is pleasant music, just above the elementary grade. The Kiddies' Book: A Collection of Traditional and Nursery Rhymes. Arranged and set to music by T. RICHARDSON and ELIZABETH C. L. RICHARDSON. (2s. 6d. net. Curwen.) My Maid Mary: Six Songs for Children. Music by F. WHITE. (2s. 6d. net. Curwen.) Messrs. Curwen's volumes will be welcome in the nursery and in Infants' Classes. The illustrations to The Kiddies' Book" are attractive, and the new type used in both is very pleasing. O Sleep is a Net: Unison Song (with optional second part). The Empty House: Unison Song. Words by CHRISTINE PHILOSOPHY. The Life of Reason, or the Phases of Human Progress. Second Edition. Vol. I. Introduction and Reason in Commonsense. Vol. II. Reason in Society. Vol. III. Reason in Religion. Vol. IV. Reason in Art. Vol V.-Reason in Science. By G. SANTAYANA. (Ss. net each. Constable.) This work will appeal to all who are interested in philosophy. The Life of Reason is defined as "that part of experience which perceives and pursues ideals." Reference is made to the lack of positive ideals in modern philosophy, and the success of Greek philosophy is explained by the rational life led by the Greeks. Their philosophy needs re-stating for modern life, and this is the purpose of the present work. The author notes the facts and purposes which seem to be primary; the conception of nature and life which gathers around them; and from this the ideals of thought and action which are approached by the mastering of experience by reason. By Benedetto Croce: An Introduction to his Philosophy. R. PICCOLI. (8s. 6d. net. Cape.) One way of approaching the study of such a thinker as Croce is to make straight for his principal writings. Of these the Esthetic,' in Mr. Douglas Ainslie's translation, was noticed in our columns some months ago. Another mode of approach, and one which will commend itself to many readers, is to accept temporarily the guidance of one who has devoted himself to the master's system of thought. This method has the advantage of enabling the reader to view that system as a whole, an advantage not to be underrated, considering the extent of Croce's writings. It has the still greater advantage, at any rate as exemplified by Dr. Piccoli, of exhibiting the system of thought as it gradually shaped itself in the course of years. The ordinary histories of philosophy, with their neatly arranged expositions of philosophical systems, remind one of the stuffed contents of museum cases, whereas the systems themselves were always the outcome of an actual life lived in a certain intellectual and social environment. This is the point of view from which Dr. Piccoli writes. He has the double advantage, as an exponent of Croce in English, that he himself sat long at Croce's feet, and that he has lived long in England and America. So excellent an introduction to Croce's thought should have a large number of readers. The Moral Self: Its Nature and Development. By A. K. WHITE and A. MAC BEATH. (6S. net. Edward Arnold.) Mysticism of East and West: Studies in Mystical and Moral Philosophy. By W. L. HARE. (10s. 6d. net. Cape.) POETRY. Roast Leviathan. By L. UNTERMAYER. (5s. net. Cape.) The freshness and originality of this American volume of Jewish verse is very welcome. The country note in "Daybreak' has a Wordsworthian width as in the sweet Pastoral of an empty street." " The war-poems as On the Field of Honour" show daring and tender feeling, while the love-poems as The Holy City have a reverence not generally labelled American. "Roast Leviathan " and other poems on Hebrew legends are interesting, but on a strange, gigantic scale. Their realism seems garish and unrestful compared with the solemn beauty of the Old Testament. Browning himself might have been proud of dramatic monologues like the poem on Heine, and we close the book with the conviction that Louis Untermayer is a true poet with wide scope. The Two Crowns. A Romantic Drama in Three Acts. By CLARA REED. (2s. 6d. net. Stock.) This play is called a romantic drama," and as a romance it has merits. The idea that Leicester's treachery opened Mary's eyes to the peace of divine love is well brought out. Mary's calm at the scaffold springs from knowledge that God can turn the worst death into "a perfect end." Again, Leicester's treachery to Elizabeth throws her back wholly on her love of England. The development of these two ideas gives unity to the play. It is, however, impossible to justify the wanton distortion of history which places the 1572 Massacre of St. Bartholomew immediately before Mary's execution in 1587, and makes other equally futile confusions. Public School Verse. An Anthology. Volume III. 1921-1922. 3s. 6d. Heinemann.) " " I hear the wood stir where a low branch swung, Yuletide Revels in Merrie England: Arranged for Acting. By The Works of Shakespeare. The Second Part of King Henry Green Broom. By FLORENCE H. DARWIN. (Is. 6d. net. Heffer.) Types of English Drama, 1660-1780: Edited from the Original Editions with Notes, Biographical Sketches, and Airs of The Beggar's Opera." By Prof. D. H. STEVENS. (17s. 6d. net. Ginn.) 46 PSYCHOLOGY. An Outline of Psychology. By Prof. W. MCDOUGALL. (125. net. Methuen.) A fairly full and yet manageable outline of psychology from the pen of Prof. McDougall is an event for teachers and students of the subject, though not perhaps for the foremost specialists, except that the author's general point of view, as well as his latest conclusions on special problems, are here very conveniently summarized. To compare Prof. McDougall's treatment with that of his brilliant predecessor at Harvard, William James, would have been inevitable in any case, but the comparison is explicitly made in the preface to the present work. James swayed somewhat between the atomistic and the purposive view of mental process, whereas McDougall adheres consistently to the latter. So much was to be expected by any one acquainted with the author's previous writings-and who, that pretends to any knowledge of recent developments in psychology, is not acquainted with them? This book, whilst shirking no difficulty, carries the reader along by its apt illustrations and its lively style. The device of printing difficult portions in smaller type is convenient both for beginners and for maturer students. To the student of psychology we may safely say-to whatever books you already have, you must add this one. " " the hope The Nature of "Intelligence" and the Principles of Cognition. By Prof. C. SPEARMAN. (15s. net. Macmillan.) For many years past Prof. Spearman has been the inspirer and director of a large amount of work purporting to investigate intelligence by means of objective tests. This work has incurred reproach for the simple reason that its methods are only objective, and that the all-important subjective analysis has been mostly neglected. In other words, people have been testing and measuring something as to whose very nature the opinions of authorities are all at sixes and sevens. This omission Prof. Spearman claims to have partly rectified in this important volume. He conducts his readers through a careful and exhaustive process of analysis, the result of which is, he believes, that psychology may now be regarded, not merely as of a science," but as a real science resting upon just as sure a foundation of ultimate laws or principles as that upon which physics rests. With the aid of these principles, which furnish the master-key to all cognitive analysis, he demonstrates the inward constitution of the classical faculties, such as perception, intellect, memory, imagination, and so on; and he re-attacks the problem of intelligence. But he goes much further, and thinks that the principles at which he has arrived may have profound consequences for education, industry, art, anthropology, sociology, and even metaphysics. These are high claims, but Prof. Spearman writes with a sense of responsibility to be expected from a man in his position. We must wait and see. Psychology and Morals: An Analysis of Character. By J. A. HADFIELD. (6s. net. Methuen.) The traditional practice has been to keep psychology and ethics apart. It has been held that the former is a positive and the latter a normative science, and that though the moralist must to a certain extent stand indebted to the psychologist, only confusion can arise from intermingling the functions of the two. True, William James set convention at naught in his famous chapter on Habit, but then, say the critics, James was a genius, and a genius must be allowed to be so in his own way. But recent developments in psychology, and especially in the practical applications of psycho-analytic methods, have broken down the traditional distinction, and we find some of the wilder psycho-therapists recommending " for the body which are brutally destructive of the soul. So far, therefore, from condemning Mr. Hadfield's method, we rejoice to find a practical physician and a competent psychologist definitely facing moral issues, whilst disclaiming the ability or the obligation to produce a system of moral philosophy. The professor of mental hygiene here comes to the assistance of the teacher and the pastor. He does his work well, and we hope his interesting book will be widely read. cures Three Chapters on the Nature of Mind. By the late W. B. Talks on Psychotherapy. By Dr. W. BROWN. (2s. 6d. net. RELIGIOUS KNOWLEDGE. The Acts of the Apostles in the Revised Version. With Introduction and Commentary by A. W. F. BLUNT. (4s. 6d. net. Clarendon Press.) This first instalment of a new series of Commentaries on the Bible promises well. It is planned on new and most attractive lines. The general idea is to place the Books in their historical setting, using historical and archaeological aids as much as possible. There is an ample introduction, and a number of detached notes (really essays) inserted at various points in the Commentary. The whole is illustrated by appropriate pictures drawn from classical art. We strongly recommend teachers to acquaint themselves with this stimulating volume, embodying as it does new and fruitful ideas. Jeremiah: The Prophet of Hope. By DOROTHEA STEPHEN. (4s. 6d. net. Cambridge University Press.) This is a really useful little book, scholarly, yet popular. It is admirably adapted for one who is prepared to begin the serious study of a prophetic book. With the Revised Version in his hand, the student is given the history that forms the background of the prophecies, and can begin his study of the prophetic collection in earnest. Addresses to Children. By Mrs. N. L. COHEN. (3s. net. Routledge.) " Some of our readers will be glad to know of this volume. The addresses contained in it are based on the religion and institutions of Judaism, and embrace such themes as the Shemang " ("Hear, O Israel "), three addresses; Pentecost and the Ten Commandments; the Fast of Ab; Holidays; New Year; Day of Atonement; Passover; certain Psalms and Bible stories. The addresses are simple, straightforward, and practical, and are eminently adapted for their special purpose. The Christian Faith; A Series of Essays for the Use of Parents and Teachers Written at the Instance of the Christian Evidence Society. Edited by Dr. C. F. NOLLOTH. (Murray. 7s. 6d. net.) We can only, in our restricted space, call the attention of our readers to this valuable volume, and briefly indicate its contents. The subjects of the essays are as follows: (1) Religion and Philosophy, by Prof. C. C. J. Webb; (2) The Comparative Study of Religion, by Dr. Weitbrecht Stanton; (3) The Bible and Science, by Mr. W. M. Bell; (4) The Religious Value of the Old Testament, by Canon Kennett; (5) The Evidences of Christianity by Mr. R. Webb-Odell; (6) The New Testament Record, by Prof. Peake; (7) Jesus Christ, by the Editor, Dr. Nolloth; (8) The Ethics of Christ, by Dr. Percy Gardner; (9) Christianity and Social Problems, by Dr. Hastings Rashdall; (10) Modern Psychology; its Bearing on Religious Teaching, by Canon E. W. Barnes; (11) Christianity and History, by Canon E. W. Watson (Christ Church, Oxford). For thoughtful, well-educated people, and especially for dealing with difficulties and perplexities likely to affect them, nothing could be better than this book. What Jesus Taught: For Discussion Groups and Classes. By A. W. SLATEN. ($1.50. The University of Chicago Press.) A useful book, intended for use by study-circles, containing chapters on such topics as, What Jesus taught about civilization, Hate, War, and Non-resistance, Democracy, Religion, Himself, the Hope of the World. The volume is brightly written, and is suggestive in presenting subjects for discussion and methods of treatment. Lessons on the Way. By Dr. P. DEARMER. Vol. II. Belief in God and in Jesus Christ. (3s. 6d. net. S.P.C.K.) Dr. Dearmer's second volume will be welcomed by teachers. It is fresh, stimulating, and.eminently suggestive. Like the first it is divided into thirty lessons, intended to cover a year's instruction. In it he discusses in simple, non-technical language the use and importance of the traditional creeds (the defence of the traditional credal forms is quite admirable), and then proceeds to expound the fundamental articles of belief in God, Christ, and so on. The book is modern and up to date in the best sense, and we cordially recommend it to the notice of teachers. " The Catholic Student's Aids to the Study of the Bible. By Prof. H. POPE. Vol. III. The New Testament (The Acts, Epistles, and Apocalypse). (s. 6d. net. Oates & Washbourne.) With the present volume Prof. Pope completes his "Catholic Students' Aids' to the Study of the Bible." He is to be congratulated on the result. The third volume exhibits all the qualities of its predecessors-solid learning, and a remarkable (Continued on page 540.) MACAULAY-Essay on Clive. By A. J. F. COLLINS, M.A. 2s. 3d. (S.) SHAKESPEARE-Henry V. By A. J. F. COLLINS, M.A. 3s. (S.) CAESAR-Gallic War, Book V. By A. H. ALLCROFT, M.A., and W. F. LIVY-Book IX. By W. J. WOODHOUSE, M.A. With Introduction, Text, and Notes. 4s. 6d. (S.) • PLATO Apology. By T. R. MILLS, M.A. With Introduction, Text, and Notes. 3s. 6d. (S.) SOPHOCLES-Ajax. By J. H. HAYDON, M.A. With Introduction, Text, and Notes. 3s. 6d. (S.) VERGIL-Aeneid, Book II. By A. H. ALLCROFT, M.A., and T. R. MILLS, M.A. With Introduction, Text, Notes, and Complete Alphabetical Lexicon. 2s. (S.) CAESAR-Gallic War, Book VII. By A. H. ALLCROFT, M.A., and W. F. MASOM, M.A. Introduction, Text, Notes, and Complete Alphabetical Lexicon. 2s. (J.) VERGIL Aeneid, Book X. By A. H. ALLCROFT, M.A., and B. J. HAYES, M.A. Introduction, Text, Notes, and Complete Alphabetical Lexicon. 2s. (J.) LIVY-Book II, Ch. 1-50. By J. F. STOUT, M.A., and A. J. F. COLLINS, M.A. 3s. 6d. (S.) CICERO De Senectute. By A. H. ALLCROFT, M.A., and W. F. MASOM, M.A. Introduction, Text, Notes, and Complete Alphabetical Lexicon. 2s. (S.) HORACE Odes, Book III. By A. H. ALLCROFT, M.A., and B. J. HAYES, M.A. Introduction, Text, Notes, and Complete Alphabetical Lexicon. 2s. (S.) PLATO Apology. By T. R. MILLS, M.A. 3s. 6d. (S.) GALT'S for School Prizes. Leading House in the North for books in Tree Calf, Full Calf, Half Calf, Paste Grain, &c. Quality and Finish Guaranteed. Inspection Invited. Postal Inquiries receive prompt attention. JAMES GALT & CO., Ltd., 27 JOHN DALTON STREET, SECOND-HAND SCHOOL BOOKS FOR USE NEXT TERM. NEW CATALOGUE READY SHORTLY. Please write for copy (sent to Holiday address if desired) to— GEORGE OVER, Educational Bookseller, RUGBY. All Persons interested in Phonetics are recommended to join the INTERNATIONAL PHONETIC ASSOCIATION. Subscription, 8s. per annum. Entrance fee, 4s. Members receive free of charge Le Maitre Phonétique, the official organ of the Association (Editor: P. Passy, 20 Madeleine, Bourg-la Reine, Seine, France; Assistant Editor: D. JONES, University College, London, W.C. 1). New Members receive in return for the Entrance fee: The Principles of the I.P.A., What is Phonetics? by H. E. Palmer, and La Phonétique appliquée à l'Enseignement de la Lecture, by P. Passy.-List of other publications and prices and back numbers of Le Maître Phonétique (from 1889) on application. FITCH & SON, LTD. (Established 1784), NARROW QUAY, BRISTOL Pure Honey, Cane Syrup, and Canned Goods. :: Schools and Institutions specially catered for at wholesale prices Send for Price List F.H.M. power of presenting lucidly a number of complicated facts. Dr. Pope is acquainted with modern critical work of all kinds, and when criticizing it is able to set forth its strong points impartially. The treatise thus has a value for students of all sorts. We hope it will be widely consulted. It is equipped with a remarkably good and useful series of maps, and with admirable indexes. Besides the introductions to the particular books there are full discussions of special points-like "the chronology of the Apostolic Age,' "The Brethren of the Lord," "The Writings of Josephus and Philo," &c. It may be added that the indexes include one of Greek words. " The Book of Hosea. By Prof. T. W. CRAFER. (25. Cambridge University Press.) Dr. Crafer's edition of Hosea (in the Cambridge Press Revised Version series for Schools) is a scholarly but in no sense a difficult treatment of a prophetic book which is not simple in itself. Just the right kind of help is provided to enable classes to read the text with profit. There is a useful introduction. Egypt and the Old Testament. By Prof. T. E. PEET. (5s. net the Rev. Canon E. C. OWEN. (2s. 6d. net. Philip & New Testament Teaching in the Light of St. Paul's. By Prof. A. H. MCNEILE. (IOS. net. Cambridge University Press.) Old Testament Life and Literature. By Prof. I. G. MATTHEWS. (128. net. Macmillan.) Palestine, the Land of Three Faiths. By P. GRAVES. (12s. 6d. net. Cape.) Rydal School Hymnal. (Printed by Hazell, Watson, & Viney.) The Old Testament and After. By Dr. CLAUDE G. MONTEFIORE. (7s. 6d. net. Macmillan.) SCIENCE. The Calculations of Analytical Chemistry. Third Edition. Revised and Enlarged. By Prof. E. H. MILLER. (9s. net. Macmillan). This is an exceedingly useful and practical manual. The method of presentation and the arrangements differ materially from those of the old books on chemical calculations in that the student is led to consider each problem on its own merit and to solve it from a knowledge of general principles. Over two hundred examples are given, all of them as practical as possible. Apart from the simpler calculations of the elementary worker, there are chapters devoted to calorific values, electrolytic contents, gas analysis, and useful tabular matter. The fact that this book has passed through three editions illustrates the necessity for such a work. Waves and Ripples in Water, Air, and Aether. Being the 76th Course of Christmas Lectures delivered at the Royal Institution of Great Britain. By Prof. J. A. Fleming. Fourth Issue, Revised. (7s. 6d. net. The Sheldon Press.) It is now about twenty years since Prof. J. A. Fleming delivered his course of Christmas Lectures at the Royal Institution on Waves and Ripples in Water, Air, and Aether." These lectures, as we are reminded in the preface, are for an audience which, if not wholly juvenile in age, is at least young in spirit, and the topics are selected accordingly. Wireless telegraphy was, at the time of Prof. Fleming's lectures, emerging from the experimental stage while to-day its appeal is to all. There is on that account all the more need for a clear and simple explanation of the fundamentals of the subject such as can be provided alone by pioneers such as Prof. Fleming. Advanced Practical Physics for Students. By B. L. WORSNOP and Dr. H. T. FLINT. (21s. net. Methuen.) Based upon the course in practical physics followed in King's College, London, this book is intended for students proceeding to a pass or honours degree examination. An important feature of the book is the opening chapter, which is devoted entirely to those parts of the calculus which are required for a clear understanding of the subsequent text. Another characteristic of the book is the extensive theoretical treatment which precedes many of the experiments. By this means, the student saves time which otherwise would be required for seeking information from other sources. One of the most distinctive chapters is on ammeters, voltmeters, and galvanometers: this gives much information on the relative merits and characteristics of different types of galvanometer. In some sections the treatment is exceptionally complete; thus, ten separate methods are de scribed for the measurement of surface-tension. Modern investigation is represented by the measurement of the velocity of electric waves in wires, the determination of ejm and for cathode rays, the characteristics of triode valves, and radioactivity. The illustrations, as a rule, are good but there are a few line-diagrams which are scarcely up to the standard of the text. A Text-book of Intermediate Physics. By H. MOORE. (22s. 6d net. Methuen.) Theoretical Physics is a subject of increasing interest and importance; but as the subject widens the difficulty of the teacher grows, and the problem of incorporating new knowledge without overloading the curriculum becomes more acute. It is instructive to see how an experienced teacher deals with the present situation. In the volume under review Mr. H. Moore frankly admits his inability to define exactly all the ground which might fairly be assigned to an intermediate course, and he, therefore, provides a text-book to be used in conjunction with a series of experimental lectures. The decision to separate the more theoretical parts of the subject from those which are mainly descriptive and experimental seems on the whole a wise one, even though it may occasion some regret. The treatment of each branch commences with a summary of the most elementary phenomena; but, as the author points out, such a presentation cannot be considered complete until sufficient facts have been accumulated to enable a unifying hypothesis to be formulated which links these facts together. The volume is to be recommended strongly as giving an exceptionally clear and up-to-date account of the various branches of Physics. Reference is made to the Theory of Relativity, and there are chapters dealing with high-frequency oscillations, wireless telegraphy, and the discharge of electricity through gases. The book contains over 800 pages, and the absence of questions and numerical examples is probably due to the desire to economize space. There is, we are glad to note, a copious index. Two small criticisms may be made the definitions of centrifugal and centripetal force on page 58 are not in accord with etymology and it would be better to interchange them, and Sir Alfred Ewing would be the last to deny to Weber the credit due to him in connexion with the molecular theory of magnetism. Elementary Physical Chemistry. By W. H. BARRETT. (68. Edward Arnold.) Mr. Barrett has written an excellent book on elementary physical chemistry, which will be welcomed not only by schoolmasters, but also by those in charge of elementary classes at the universities. It is thoroughly sound, but, nevertheless, pleasant and easy to read, while the practical instructions, which form a noticeable feature of the book, are clear and adequate. There has long been a need for such a book, and this is especially welcome, coming as it does from one who has made the teaching of physical chemistry in schools a subject particularly his own. Theoretical Chemistry from the Standpoint of Avogadro's Rule and Thermodynamics. By Prof. W. NERNST. Revised in Accordance with the Eighth-Tenth German Edition by L. W. CODD. Fifth English Edition. (28s. net. Macmillan.) There is no need for us to praise Prof. Nernst's book, which became a classic as soon as it was published. It is sufficient to say here that the present edition is a credit to author, translator, and publisher, and that twenty-eight shillings seems a very modest price to pay for nearly a thousand pages of the essence of chemistry! Perhaps one ought to add that, although the mathematical chemist chiefly will delight in Nernst, yet the non-mathematician will find the greater part of the book quite intelligible; he should not neglect to read those parts which he can understand, for nowhere else in English will he find them dealt with in such a masterly fashion. Food, Health, and Growth: A Discussion of the Nutrition of Children. By Dr. L. E. HOLT. (7s. 6d. net. Macmillan.) This book contains the substance of six lectures delivered in 1921 at the Leland Stanford Junior University, the object being to give in a simple form some account of recent discoveries relating to nutrition, and especially to the food and nutrition of children, which is obviously of paramount importance. There is much in the book which has not hitherto been easily accessible to the general reader, but which all who have at heart the wise feeding of children will be glad to know. The relative values of vegetable and animal proteins, the harm resulting from the consumption of too much or too little fat and of an excessive proportion of carbohydrate, and especially the great importance (Continued on page 542.) |