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VOL. 6

No. 3

New Technical Books

A Selected List on Industrial Arts and Engineering
Added to The New York Public Library

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NEW TECHNICAL BOOKS

Titles marked with a star (*) are not for circulation, but may be consulted in the Science and Technology Division, Central Building, Fifth Avenue and Forty-second Street, daily from 9 a. m. to 10 p.m. Sundays, 1 p. m. to 10 p. m.

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York, 1921. 41 p. 16°.

This association now numbers forty-five clubs. During the past year it has assisted in the campaign to protect the national parks from commercial inroads; also in preserving the groves of California redwood. The current bulletin lists several new books on mountaineering, outlines the proposed expedition to Mount Everest, and gives information on other timely topics. Copies may be obtained gratis from Mr. Le Roy Jeffers, 476 Fifth Avenue, New York City.

Audley, James A. Silica and the silicates. London: Baillière, Tindall and Cox, 1921. xiv, 374 p. illus. 8°. 15 s. net. (Industrial chemistry, edited by Samuel Rideal.)

PND (118)

A comprehensive outline of the occurrence and uses of these substances and a satisfactory account of lime, cement, and mortar, with more detailed consideration of the ceramic industries, glass, and enamels. Bibliographies at the section endings. Although scarcely complete enough for the technician, there is much to interest the general reader and the beginner.

Reviewed in Journal of the Society of Chemical Industry, May 31, 1921; Journal of the Society of Glass Technology, Aug., 1921.

*Barnett, Edward de Barry. Anthracene and anthraquinone. London: Baillière, Tindall and Cox, 1921. xi, 436 p. 8°. $6.00. POD (118) Contains numerous references to patents. A timely book that "should be heartily welcomed by all those research chemists [dye chemists] and students specializing in or wishing to acquire an inti mate knowledge of the important but complex chemistry of anthracene derivatives." Chemical trade journal and chemical engineer, March 12, 1921.

Also reiewed in Journal of the Society of Chemical Industry, May 31, 1921; American dye-stuff reporter, Aug. 1, 1921.

Beck, Ernest G. Tank construction, relating principally to the design, manufacture and erection of tanks in mild steel. Manchester: Emmott & Co., Ltd., 1921. x, 265 p. illus. 8°. 12 s. 6 d. VDL (121)

Revision of a series of articles which appeared in the Mechanical world, 1916-1920. Covers materials, stresses, riveting, economy of form, and the design of rectangular and cylindrical tanks. No attempt has been made to treat in detail the steelwork or other construction for supporting elevated tanks.. Author claims originality for the discussion regarding econ omy of form; the suggested method for staying the walls of rectangular tanks by means of horizontal rails; the investigation concerning the action and design of curbs and rails; the treatment for troughbottomed rectangular tanks; methods for simplifying the design, manufacture and erection of the roofs,

walls and floors of cylindrical tanks, and the treatment for dished bottoms of elevated cylindrical tanks. 178 well executed drawings.

Reviewed in Industrial management, July 1, 1921; Colliery guardian, Aug. 19, 1921.

*Biddulph-Smith, Thomas. Coke-oven and by-product works chemistry. London: Charles Griffin & Co., Ltd., 1921. x, 180 p. illus. charts. 8°. 21 s. VOF (118)

Brings together a large amount of material hitherto scattered throughout the technical press. Covers analytical and testing methods in the various departments, including the ammonium sulphate and benzol recovery plants. There is also a chapter on calori metry and pyrometry. Appendix I has the title "Some constituents of coal tar and their properties" -a translation from the German circulated privately by the Ministry of Munitions. Appendix II comprises various tables.

"For the chemist who has made up his mind to adopt certain tests and does not desire to waste his time with superfluous language, Mr. Biddulph Smith's book will be found ideal, for if it has been possible to cut out a word, without danger to the meaning, the author has done so. The result is a bare statement of the procedure of any test, it being taken for granted that the operator is an experienced chemist fully acquainted with the innumerable pitfalls of analytical work. As a reference book, the volume is all that can be desired, and, owing to its special character, we have no hesitation in prophesying a ready sale." Colliery guardian, June 17, 1921.

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In addition to a dictionary of scientific instruments, the work contains a sketch of the British optical instruments industry, an account of navigating instru ments, some facts about British optical glass, and notes on the work of the Royal Meteorological Society and the Royal Observatory at Greenwich. Gives illustrations of about 250 instruments.

Reviewed in Nature, May 12, 1921.

*Brodetsky, S. The mechanical principles of the aeroplane. London: J. & A. Churchill, 1921. vii, 272 p. diagrs. 8°. £1,1 s. VDY (121)

Strictly theoretical treatment of motion in air, dynamics of the air, and of aeroplane motion, empha sizing the theory of dimensions, moving axes, and the hydrodynamics of a perfect fluid in two dimensions. Presupposes a knowledge of the calculus. Author is Reader in Applied Mathematics, University of Leeds.

"Aeronautics, in spite of the fact that as a science it is yet a child, has already acquired quite a voluminous library and literature, but, with very few excep tions, the books are intended preeminently for designers. The present volume is certainly not of that nature. It bears the clear imprint of the student textbook and is evidently intended as a guide to students of applied mathematics that they may recognize that in aeronautics and aerodynamics lies a fruitful field for theoretic investigation. In that the author has

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