THE FORCE OF THE WIND.

By HERBERT CHATLEY, D.Sc., Eng.(Lond.), Professor of Civil Eng., Tong Shan Engineering College, N. China.

SECOND EDITION. In Crown 8vo. Cloth. Pp. i-viii+ 83. With 20 Diagrams. 3s. 6d.

"Could not well be more terse or pointed."-Symon's Meteorological Magazine.

By HERBERT CHATLEY, D.Sc., Eng.(Lond.), Professor of Civil Eng., Tong Shan Engineering College, N. China.

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A TEXT-BOOK ON AERONAUTICS.

By HERMAN SHAW, B.Sc., A.R.C.S., A.F.Ae.S. With Foreword by Col. THE MASTER of SEMPILL, A.F.C

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THE AEROPLANE. A Concise Scientific Study.

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A TEXT-BOOK OF AERONAUTICAL ENGINEERING: The Problem of Flight.

By HERBERT CHATLEY, D.Sc.(Eng.), London.

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AIRMAN'S INTERNATIONAL DICTIONARY. English

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By MARIO M. DANDER, Engineer, Lieut. in the Royal Italian Flying Corps.

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A POCKET-BOOK OF ELECTRICAL RULES AND TABLES. For the Use of Electricians and Engineers. By JOHN MUNRO, C.E., and Prof. JAMIESON, M.Inst.C.E. Under the general Editorship of W. R. COOPER and ROLLO APPLEYARD. TWENTY-SECOND EDITION. Re-written. In Pocket Size. 765 pages.

By HERMANN BOHLE, Prof. of Electrotechnics at the University of Cape Town, and Prof. DAVID ROBERTSON, B.Sc., A.I.E.E.

SECOND EDITION, Thoroughly Revised. In Large 8vo. Cloth. With Plates and Figures in the Text. In Preparation.

ELECTRICAL PHOTOMETRY AND ILLUMINATION. A Treatise on Light and its Distribution, Photometric Apparatus, and Illuminating Engineering.

By HERMANN BOHLE, Prof. of Electrotechnics at the University of Cape Town.

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OVERHEAD ELECTRICAL POWER TRANSMISSION ENGINEERING.

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ELECTRICITY METER PRACTICE.
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INDUSTRIAL ELECTRIC VEHICLES AND TRUCKS.

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ELECTRICAL PRACTICE IN COLLIERIES. A Manual for Colliery Managers, Under-Managers, Engineers, and Mining Students.

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A TREATISE ON ELECTRO-METALLURGY: embracing the Application of Electrolysis to the Plating, Depositing, Smelting, and Refining of Various Metals, etc.

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SPOT AND ARC WELDING.

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BIBLIOGRAPHICAL HISTORY OF ELECTRICITY AND MAGNETISM. Chronologically arranged.

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RADIO FREQUENCY MEASUREMENTS.

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TELEGRAPH SYSTEMS AND OTHER NOTES. Handbook of Principles on which Telegraphic Practice is based.

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ELECTRICAL THEORY AND THE PROBLEM OF THE UNIVERSE. Considered from the Physical Point of View, with Mathematical Appendices.

By G. W. DE TUNZELMANN, B.Sc., London.

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MAGNETISM AND ELECTRICITY.

A Practical Elementary Manual, specially arranged for Science Teachers and Students.

By ANDREW JAMIESON, M.Inst.C.E., M.Inst.E.E. Revised by EWART S. ANDREWS, B.Sc., Eng.

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