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NEW TECHNICAL BOOKS

A SELECTED LIST ON INDUSTRIAL ARTS
AND ENGINEERING ADDED TO THE

NEW YORK PUBLIC LIBRARY
SEPTEMBER-NOVEMBER, 1915

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VIEW THROUGH A PERISCOPE

(Enlarged partial view, surrounded by annular panoramic view. Repro-
duced by courtesy of Scientific American and La Nature)

THE NEW YORK PUBLIC LIBRARY

NEW TECHNICAL BOOKS

Titles marked with a star (*) are not for circulation, and may be consulted only in the Technology Division, Room 115, 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.

Aeronautics

L'observation aérienne et les conséParis: Chapelot, 1914. 87 p. 8°. An interesting and timely discussion in which the author points out the advantages and limitations of aerial observation in warfare.

1. *Blaise, Capitaine. quences de son emploi.

2. Burls, George Arthur. Aero engines; with a general introductory account of the theory of the internal-combustion engine. London: C. Griffin & Co., Ltd., 1915. 196 p. illus. 8°. (Griffin's aeronautical series.)

A rearrangement and extension of a course of lectures delivered at Northampton Polytechnic Institute during 1914. Describes, with considerable detail of text and illustration, representative engines of the horizontal, radial, diagonal, vertical, and rotary types. Appendix has a tabular list of engines of 1914 with leading particulars.

Reviewed in Canadian Engineer, Toronto, June 24, 1915, p. 707; in Mechanical World, London, Aug. 20, 1915, p. 89.

3. Fage, A. By A. Fage... front. illus.

The aeroplane. A concise scientific study. London: C. Griffin & Co., Ltd., 1915. 136 P., 8°. (Griffin's aeronautical series.)

A somewhat technical treatise intended to meet the requirements of engineers desirous of studying the underlying principles of aeroplane construction. Author is aeronautics research scholar of the Imperial College of Science and Technology (England). Has drawn to a considerable extent upon the reports of the several aeronautical laboratories. Chapters cover winds, streamline bodies and struts, wings, construction of an aeroplane, equilibrium, stability, propellers, and engines.

4. Grahame-White, Claude, and HARRY HARPER. The aeroplane, by Claude Grahame-White and Harry Harper... New York: F. A. Stokes Co. [1915.] 279 p. 8°. ("Romance of reality" series, [v.] 1.)

illus. (incl. maps, plans.)

A delightfully told, richly illustrated, and romantic story of the aerial conquest from the beginnings to present day achievements and the latesttype machines. Has chapters on air perils, military and cross-country flying, sea-planes and airships, aerial warfare, aerodromes, flying schools, suggestions to prospective air tourists, and a glance into the aerial future.

Reviewed in Electrician, London, Oct. 15, 1915, p. 58.

5. Loening, Grover Cleveland. Military aeroplanes; an explanatory consideration of their characteristics, performances,

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