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THE SOUTH KENSINGTON COIL, 48 in. spark. Special Coils for Wireless Telegraphy.

NEW TRIPLE-POLE MERCURY BREAK, giving a stream-like effect when used with Apps' Patented Induction Coil (this can be fitted to any Induction Coil), £6 6s.

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Examples of Work may be inspected and all information obtained at

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74 NEW OXFORD STREET, LONDON, W.C.

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Late Director of the Natural History Museum, and President of the Royal Zoological Society. A Personal Memoir. By CHARLES J. CORNISH, M.A., F.Z.S. With Photogravure Portraits. 8vo. 8s. 6d. net. THE NATION (U.S.A.).—"For details of the life we must refer to the volume. . . . Flower was a man of noble presence, striking manly beauty, and of a most kindly and unaffected nature. . . . His marriage proved ideal in its results. . . . He was a self-sacrificing worker, a miracle of persistent, steady devotion to the profession he had at heart... He was... the first man in Great Britain to elevate the keeping of a museum into one of the higher professions; was one of the first in the world to introduce modern ideas into the administration of museums, and the originator of many most important advances. . . . He was an excellent comparative anatomist, a specialist in the first rank of students of the Cetacea. . . a lover of poetry, of outdoor life, of children, and animals. Not a genius, he was lamented more than any scientist of his generation, in his own country, and by those of other lands who had had the privilege of his friendship, and knew his worth in spite of his modesty. . . . It was well that a memoir should be written to keep him and his work in remembrance."

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GRAPHIC STATICS. By T. ALEXANDER, C.E., M.Inst. C.E.I., M.A.I. (hon. causa), Professor of Engineering, Trinity College, Dublin; and Professor A. W. THOMSON, D.Sc., C.E., Member Inst. Engineers, Scotland. A Graduated Series of Problems and Practical Examples, with numerous Diagrams all drawn to Scale. 8vo. Limp Cloth. 25.

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PHOTOGRAPHY FOR THE SPORTSMAN NATURALIST. By L. W. BROWNELL.

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HUGHES' PHOTO ROTOSCOPE CINEMATOGRAPHS. THE MOST PERFECT. No Flickering. Superb Mechanism. Price £7 7 0. The Moto-Photo Camera for taking the Pictures. Illustrated Lists, 2d.

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NATURE

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