After an introduction containing a sketch of the history of logic, including an account of the labours of the principal schoolmen and improvers of the art of reasoning, the treatise divides itself into the four usual parts of logic-perceptivity, judgment, ratiocination, and method. Among the subjects most copiously treated are the nature and kinds of evidence; the uses of syllogisms, which are illustrated by familiar examples in each figure and mood; the various classes of fallacies; and the science of method. The work, in addition to its peculiar province of stating, analysing, and exemplifying the laws of the Aristotelian logic, comprehends a sort of catalogue raisonnée of the chief writers on this subject in ancient and modern times; and an Appendix “On Recent Logical Developments," carries down this species of information to the present day. ENGLISH COMPOSITION. The Elements of Rhetoric; a Manual of the Laws of Taste, including the Theory and Practice of Composition. By SAMUEL NEIL. Crown 8vo. 4s. 6d. cloth. THE design of this treatise is to popularise the study of rhetoric, by uniting strict philosophical accuracy of thought with a familiar mode of exposition. After defining the province of rhetoric, and explaining its utility, the author proceeds to investigate the origin of language, and of the various parts of speech, including the philosophy of general grammar. The history and structure of the English language occupies a separate section, in which are explained the modifications it has undergone by the influence of the distinct races who have successively inhabited the island. The subject of style is copiously dwelt on, and the component qualities of a good style are severally analysed and illustrated, and rules and aphorisms respecting diction are deduced. The work proceeds to treat on the imaginative faculties, comprehending the sources of poetic taste, and the logic, science, and characteristics of poetry and poetical language. This is followed by a chapter on the emotions, another on literary æsthetics, and by several chapters on figurative expressions. The sources of the ludicrous, of wit and humour, are then traced. The subject of method, in written compositions, and in orations adapted to the senate, the bar, the pulpit, and the platform, are next considered. Rhetorical is distinguished from logical method, and the partitions of oral and written discourses are laid down. Throughout this work, which embraces a great variety of topics, summaries of the principles are added in the form of axioms at the close of each subject. Several analytical or synoptical tables are given; for example, of the passions, the figures of speech, the principles of proof, the appetites, desires, affections, and passions, etc. Numerous illustrations, drawn from modern English poets, are interspersed; and under most heads are given lists of authors whose works may be consulted for further or more minute information. MAPS. Teaching Maps. England, Wales, and Part of Scotland. I. Rivers and Mountains, 6d. II. Towns, 6d. THE two teaching maps of England-1. Mountains and Rivers; 2. Towns-have been prepared upon the principle that rivers should be made the basis of geographical instruction, because they are so much more definite in form than mountains, and because they for the most part determine the site of large towns, to which water-carriage is of the first importance; moreover, rivers very commonly give a name to towns, as, for example, the Plym, Dart, Teign, Exe, Axe, Sheaf, Rother, Don, to the several towns, Plymouth, Dartmouth, Teignmouth, Exmouth, Axmouth, Axminster, Sheffield, Rotherham, Doncaster. But, perhaps, the chief advantage is, that a river with its branches affords a natural method of connecting in the memory the relative position of towns. In the river map care has been taken that the name of each river shall run parallel to, and so show the direction of, the stream; while in the Map of Towns, the names are all horizontal, and have their commencing capital letter on the right of the town's site. It may also be observed, that each map may be made the basis of self-examination in the other. Thus a pupil may accustom himself to assign to each little circle in the river map the name of the town which belongs to it. Outline Maps. Mercator- Europe-British Isles. Projection only: Three Maps, folio; single Maps, 4d. each. Projection, with Outline of Country: Three Maps, folio; single Maps, 4d. each. THESE maps are constructed on the principle that the pupil will be assisted in remembering localities by being frequently called on to point out the position of particular places on maps where they are not named. The mind and memory are active in an exercise of this kind; and the power of recollection derived from it is, therefore, likely to be stronger than the vague impression, as to the situation of a place, passively received from seeing its name on a map. In the latter case, the pupil scarcely ever thinks of more than catching sight of the word he is in search of; but in determining the position of a place which does not appear on the map, he of necessity considers its bearings or relations to other places, and his interest in the subject is awakened by thus stimulating his powers of observation. The parallels of latitude and the meridianal lines being drawn on these maps, they may be used for solving the problem: given the latitude and longitude of a place to find its position on the map;-an exercise highly instructive, and attended with little or no difficulty. Other modes of using the maps will readily suggest themselves to the teacher. DRAWING. Lineal Drawing Copies for the earliest Instruction. Comprising upwards of 200 subjects on 24 sheets, mounted on 12 pieces of thick pasteboard, in a Portfolio. By the Author of "DRAWING FOR YOUNG CHILDREN." 5s. 6d. THESE Copies consist of Geometrical Figures and Forms of simple objects, with the Roman and Writing Alphabets in Capital and Small Letters. They are printed white on a black ground. They may also be used in teaching the Letters, in teaching Writing, and in giving Lessons on the Elements of Form and Geometry. Easy Drawing Copies for Elementary Instruction. Simple Outlines without Perspective. 67 subjects, in a Portfolio. By the Author of " DRAWING FOR YOUNG CHILDREN." 6s. 6d. Sold also in Two Sets. SET I. Twenty-six Subjects mounted on thick pasteboard, in a Portfolio. Price 3s. 6d. SET II. Forty-one Subjects mounted on thick pasteboard, in a Portfolio. Price 3s. 6d. The copies are sufficiently large and bold to be drawn from by forty or fifty children at the same time. Drawing Materials. A Quarto Copybook of 24 leaves, common paper, 6d. Ditto Ditto Ditto Pencils, with very thick lead, B.B.B., 28. per half dozen. Ditto F. 1s. 6d. Ditto ditto. Perspective: Its Principles and Practice. By G. B. MOORE, Teacher of Drawing in University College, London. In Two Parts, Text and Plates. 8vo. cloth, 8s. 6d. THIS treatise is intended as a guide to the artist and the amateur in the formation of correct notions of the theory of Perspective, and in the application of the laws of that science to pictorial representation. The subject is treated not only as a study necessary to the painter, but as a branch of Optics useful to all persons desirous of improving their power of correct vision. As an introduction to the more directly practical details of the book-which are illustrated by a volume of diagrams and architectural viewsthe principles of Orthographic Projection are laid down, being considered indispensable to a clear understanding of the theory of Perspective. Besides plane and spherical projective surfaces, the author treats of perspective representation on a cylindrical transparent medium as used in Panoramic views. An explanation is given of the most useful practical methods employed in obtaining a representation on a plane: among others, those of Dr. Brook Taylor, Ubaldi, Vignola, and Pozzo. The effect of pictures produced by the Camera Obscura, Daguerreotype, etc., is analysed; and, in the concluding chapter, the perspective representation of lights and shadows, and of the reflections of objects in water, is illustrated. In the course of the work, the science is vindicated from attacks which have been made on the validity of its principles as producing a true delineation of objects as they appear to the eye. SINGING. The Singing Master. Containing First Lessons in Singing, and the Notation of Music; Rudiments of the Science of Harmony; The First Class Tune Book; The Second Class Tune Book; and the Hymn Tune Book. Sixth Edition. 8vo. 6s. cloth, lettered. "WHAT chiefly delights us in the Singing Master is the intermixture of many little moral songs with the ordinary glees. These are chiefly composed by Mr. Hickson himself; and we could scarcely imagine anything of the kind better executed. They relate to exactly the class of subjects which all who wish well to the industrious orders would wish to see imprinted on their inmost nature-contentment with their lowly but honourable lot, the blessings that flow from industry, the fostering of the domestic | affections, and the aspirations for the improvement of society."-Chambers' Journal. Sold also in Five Parts, any of which may be had separately. * I.-First Lessons in Singing and the Notation of Music. Containing Nineteen Lessons in the Notation and Art of Reading Music, as adapted for the Instruction of Children, and especially for Class Teaching, with Sixteen Vocal Exercises, arranged as simple two-part harmonies. 8vo. 1s. sewed. *II.-Rudiments of the Science of Harmony or Thorough Bass. Containing a general view of the principles of Musical Composition, the Nature of Chords and Discords, mode of applying them, and an explanation of Musical Terms connected with this branch of the Science. 8vo. 1s. sewed. III.-The First Class Tune Book. A Selection of Thirty Single and Pleasing Airs, arranged with suitable words for young children. 8vo. 1s. sewed. IV. The Second Class Tune Book. A Selection of Vocal Music, adapted for youth of different ages, and arranged (with suitable words) as two or three-part harmonies. 8vo. 1s. 6d. V.-The Hymn Tune Book. A Selection of Seventy popular Hymn and Psalm Tunes, arranged with a view of facilitating the progress of children learning to sing in parts. 8vo. 1s. 6d. The words of the Hymns without the Music may be had separately as under :— HYMNS from the HYMN TUNE BOOK, 1d. **The Vocal Exercises, Moral Songs, and Hymns, with the Music, may also be had, printed on Cards, price Two-pence each Card, or Twenty-five for Three Shillings. CHEMISTRY. *Handbook of Chemistry. For the use of Students. ORGANIC CHEMISTRY. New Edition, very carefully revised, and THESE volumes are calculated to afford, in a moderate compass, and in a style adapted to the beginner, an acquaintance with all the most important facts known and theories entertained; so as to serve for an introduction to elaborate treatises. The preface states, that it is designed for the use of students attending lectures on chemistry, and is more particularly adapted as a text book for the Author's Lectures. INORGANIC CHEMISTRY.-This is a systematic treatise on Chemistry proper, that is, the chemistry of ponderable substances; the collateral subjects of heat, light and electricity being only slightly noticed in order to devote a large portion of the work to Organic Chemistry. In the present edition a brief account has been introduced of the effects produced on matter by Heat, including the phenomena connected with liquefaction and vaporisation. In treating of the Analysis of Water, the Author has taken the opportunity of explaining the nature of the Galvanic current, and of the decomposition of compound bodies by electricity. Under the head of AIR, a short account is given of the physical properties of gases and vapours. Although these subjects belong to Physics, yet, as they have so important and direct a bearing on Chemistry, it has been thought desirable to provide the student with some elementary notions of them, leaving him to study them more fully in works on Natural Philosophy. After introductory observations on the general principles of chemistry, such as chemical combination and decomposition, chemical equivalents, the atomic theory, etc., an account is given of the properties and mode of preparing individual substances in the order generally followed in systematic treatises. ORGANIC CHEMISTRY opens with a dissertation on the theory of compounds, radicals, the theory of organic types, and doctrine of substitution, and on the metamorphosis of organic compounds by various agents: after which follows an account of the properties and modes of preparing particular organic compounds. In this edition the section on the nutrition of Plants and Animals has been entirely re written and very much enlarged. Tabular views have been largely employed as a means of illustration. Principles of Agricultural Chemistry; with special Reference to the late Researches made in England. By JUSTUS VON LIEBIG. Small 8vo. 3s. 6d. cloth. THIS work contains, in the shape of fifty propositions, a summary of the true relation between Chemistry and Agriculture. These propositions are true, so far as our present knowledge extends, and contain principles, the due appreciation and application of which is of the last importance to all who wish to cultivate Agriculture on true, that is, on scientific principles. The work demonstrates that the author's so-called "Mineral Theory" has been entirely misunderstood by Mr. Lawes, and that the experiments of the latter gentleman, in all points, really prove the truth of the "Theory," as it exists in the author's works. Handbook of Inorganic Analysis; One Hundred and Twenty-two Examples, illustrating the most important processes for determining the Elementary composition of Mineral substances. By FREDERICK WÖHLER, Professor of Chemistry in the University of Göttingen. Edited by Dr. A. W. HOFMANN, Professor in the Royal College of Chemistry. Large 12mo. 6s. 6d. "This collection of examples for practice in Chemical Analysis, is designed chiefly for the use of the laboratory. It is drawn up under the impression that it is easier for most minds to obtain a clear insight into general relations and laws by the study of special cases, than inversely to acquire a knowledge of individual cases by first directing the attention to general rules."-From the Preface. Handbook of Organic Analysis; containing a detailed Account of the various methods used in determining the Elementary composition of Organic substances. By JUSTUS LIEBIG. Edited by Dr. HOFMANN. Illustrated by 85 woodcuts. 12mo. 5s. cloth. THIS work is a second edition of BARON LIEBIG'S "Instructions in Organic Analysis." In preparing it he was assisted by DR. STRECKER of Christiania, and |