ASTRONOMY.

Airy.-POPULAR ASTRONOMY.

With Illustrations by Sir G. B. AIRY, K.C.B., formerly Astronomer-Royal. New Edition. 18mo. 4s. 6d. Forbes.-TRANSIT OF VENUS. By G. FORBES, M.A., Professor of Natural Philosophy in the Andersonian University, Glasgow. Illustrated. Crown 8vo. 35. 6d. (Nature Series.) Godfray.-Works by HUGH GODFRAY, M.A., Mathematical Lecturer at Pembroke College, Cambridge.

A TREATISE ON ASTRONOMY, for the Use of Colleges and Schools. Fourth Edition. 8vo. 12s. 6d.

AN ELEMENTARY TREATISE ON THE LUNAR THEORY, with a Brief Sketch of the Problem up to the time of Newton. Second Edition, revised. Crown 8vo. 5s. 6d. Lockyer.-Works by J. NORMAN LOCKYER, F.R.S.

PRIMER OF ASTRONOMY. With numerous Illustrations. New Edition. 18mo. IS. (Science Primers.)

ELEMENTARY LESSONS IN ASTRONOMY. With Coloured Diagram of the Spectra of the Sun, Stars, and Nebulæ, and numerous Illustrations. New Edition. Fcap. 8vo. 5s. 6d. QUESTIONS ON LOCKYER'S ELEMENTARY LESSONS IN ASTRONOMY. For the Use of Schools. By JOHN FORBESROBERTSON. 18mo, cloth limp Is. 6d.

THE CHEMISTRY OF THE SUN. With Illust. Demy 8vo. 145. Newcomb.-POPULAR ASTRONOMY. By S. NEWCOMB,

LL.D., Professor U.S. Naval Observatory. With 112 Illustrations and 5 Maps of the Stars. Second Edition, revised. 8vo. 18s. 'It is unlike anything else of its kind, and will be of more use in circulating a knowledge of Astronomy than nine-tenths of the books which have appeared on the subject of late years."-SATURDAY REVIEW.

CHEMISTRY.

Armstrong.—A MANUAL CF INORGANIC CHEMISTRY
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Cohen.-THE OWENS COLLEGE JUNIOR COURSE OF
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Cooke.-ELEMENTS OF CHEMICAL PHYSICS. By JOSIAH
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Fleischer.-A SYSTEM OF VOLUMETRIC ANALYSIS.
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Frankland.-AGRICULTURAL CHEMICAL ANALYSIS, A Handbook of. By PERCY FARADAY FRANKLAND, Ph.D., B.Sc., F.C.S., Associate of the Royal School of Mines, and Demonstrator of Practical and Agricultural Chemistry in the Normal School of Science and Royal School of Mines, South Kensington Museum. Founded upon Leitfaden für die Agriculture Chemiche Analyse, von Dr. F. KROCKER. Crown 8vo. 7s. 6d. Jones. Works by FRANCIS JONES, F.R.S.E., F.C.S., Chemical Master in the Grammar School, Manchester.

THE OWENS COLLEGE JUNIOR COURSE OF PRACTICAL CHEMISTRY. With Preface by Sir HENRY ROSCOE, F.R.S., and Illustrations. New Edition. 18mo. 2s. 6d. QUESTIONS ON CHEMISTRY.

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Lupton.-ELEMENTARY CHEMICAL ARITHMETIC. With 1,200 Problems. By SYDNEY LUPTON, M.A., F.C.S., F.I.C., formerly Assistant-Master at Harrow. Second Edition, Revised and Abridged. Fcap. 8vo. 4s. 6d. Muir.-PRACTICAL CHEMISTRY FOR MEDICAL STUDENTS. Specially arranged for the first M.B. Course. By M. M. PATTISON MUIR, F.R.S.E. Fcap. 8vo. Is. 6d. Muir and Wilson.-THE ELEMENTS OF THERMAL CHEMISTRY. By M. M. PATTISON MUIR, M.A., F.R.S.E., Fellow and Prælector of Chemistry in Gonville and Caius College, Cambridge; Assisted by DAVID MUIR WILSON. 8vo. 12s. 6d. Remsen.-Works by IRA REMSEN, Professor of Chemistry in the Johns Hopkins University.

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AN INTRODUCTION TO THE STUDY OF CHEMISTRY (INORGANIC CHEMISTRY). Crown 8vo. 6s. 6d.

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PRIMER OF CHEMISTRY. With numerous Illustrations. New Edition. With Questions. 18mo. Is. (Science Primers.) LESSONS IN ELEMENTARY CHEMISTRY, INORGANIC AND ORGANIC. With numerous Illustrations and Chromolitho of the Solar Spectrum, and of the Alkalies and Alkaline Earths. New Edition. Fcap. 8vo. 4s. 6d.

(See under THORPE,)

Roscoe and Schorlemmer.-INORGANIC AND ORGANIC CHEMISTRY. A Complete Treatise on Inorganic and Organic Chemistry. By Sir HENRY E. ROSCOE, F.R.S., and Professor C. SCHORLEMMER, F.R.S. With numerous Illustrations. Medium 8vo.

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Thorpe.-A SERIES OF CHEMICAL PROBLEMS, prepared
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BIOLOGY.

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Balfour and Ward.-A GENERAL TEXT BOOK OF BOTANY. BY ISAAC BAYLEY BALFOUR, F.R.S., Professor of Botany in the University of Oxford, and H. MARSHALL WARD, Fellow of Christ College, Cambridge, and Professor of Botany in the Royal Indian Engineering College, Cooper's Hill. 8vo. [In preparation. Bettany.-FIRST LESSONS IN PRACTICAL BOTANY. By G. T. BETTANY, M.A., F.L.S., formerly Lecturer in Botany at Guy's Hospital Medical School. 18mo. IS.

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PTERIDOPHYTA.

Crown [Part II. in preparation.

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