and point of view, and he brought unusual training and qualifications to his task." -From a review in N. E. L. A. bulletin, New York, May, 1915, p. 335.

Also reviewed in Engineering Record, New York, May 15, 1915, p. 625; in Engineering News, New York, July 15, 1915, p. 117; in Electrical Review & Western Electrician, Chicago, July 24, 1915, p. 163-164.

Explosives, Weapons, etc.

*Auerbach, Felix, 1856-. Die Physik im Kriege; eine allgemein verständliche Darstellung der Grundlagen moderner Kriegstechnik, von Felix Auerbach... Jena: G. Fischer, 1915. 188 p. illus.

12°.

A well illustrated little book for the lay reader. Considers the application of physical science to modern warfare by describing rockets, light bearing parachutes, telescopes, periscopes, range finders, Roentgen rays, topographical and photographic instruments, field telephony and telegraphy, submarine boats, aeronautical apparatus, artillery, projectiles, and mines.

Dewitz, Hrolf von. War's new weapons; an expert analysis in plain language of the weapons and methods used in the present great war. With introductory preface by Hudson Maxim. Illustrated. New York: Dodd, Mead and Co., 1915. 295 p. pl. 8°. "Baron von Dewitz, a subject of Denmark, very naturally views the present European conflict with the eyes of a neutral. He has endeavored to present facts as he has found them, and without partiality, and his handling of the specialized branches of modern warfare and weapons is that of a military expert."-From the preface by Hudson Maxim.

Dommett, W. E. Submarine vessels; including mines, torpedoes, guns, steering, propelling and navigating apparatus, and with notes on submarine offensive and defensive tactics, and exploits in the present war. London: Whittaker & Co., 1915. illus. 8°.

106 P.

"Its style is much better than the usual book on technical matters addressed to the non-technical public, and in particular the short section on the electrical means by which underwater propulsion is effected is clearly written, although of necessity many things that electrical engineers will want to know are left unexplained. Some interesting exploits both of our submarines and in the way of defence against the 'U boats' of the enemy are hinted at, but here again it is not good for us, at present, to know too much."-From a review in Electrical Engineering, London, April 15, 1915, p. 164.

Also reviewed in Journal of the Society of Engineers, London, May, 1915, p. vii; in Nautical Magazine, Glasgow, June, 1915, p. 589.

*Escales, Richard. Nitrosprengstoffe (Pikrinsäure, trinitrotoluol u. a.) von Dr. Richard Escales. Leipzig: Veit & Co., 1915. 448 p.

illus. 8°.

A timely and notable work-the sixth of a series by this well known authority, in which are discussed the use and manufacture of the aromatic nitro explosive compounds, including such new developments as tetranitroanalin, diphenylsulphides, etc. References to individual patents; also discussions of such topics as gas reactions, poisonous effects, and methods of testing.

Marshall, Arthur. Explosives; their manufacture, properties, tests and history. London: J. & A. Churchill, 1915.

624 p.

Since the publication of Guttmann's work in 1895 this is the most comprehensive book in English on the subject. Author is chemical inspector, Indian Ordnance Department.

"The above brief survey of mere chapter headings justifies the application of the description magnum opus to such a pile of work so well done. Apart from the interest which the book will possess for trade readers, no volume with which we are acquainted is so well suited for imparting a knowledge of explosives to laymen. Chemical formulae are as remarkable for their absence as for their presence in the more academic volumes."-From a review in Arms & Explosives, London, April, 1915, p. 46–47.

Also reviewed in the Mining Magazine, London, May, 1915, p. 296-297; Chemical Trade Journal, London, April 17, 1915, p. 354; Mining & Scientific Press, San Francisco, May 29, 1915, p. 857.

*Vennin, L., and G. CHESNEAU. Les poudres et explosifs, et les mesures de sécurité dans les mines de houille.

Béranger, 1914.

573 p. diagrs. illus.

pédie de science chimique appliquée.

8°.

tome 6.)

Paris: C.

(Encyclo

Part one, by Vennin, treats of the theory, dynamics, testing, chemistry, manufacture, and various uses of explosives. Part two, by Chesneau, deals with firedamp and coal dust and the use of safety explosives.

Reviewed in Zeitschrift für das gesamte Schiess und Sprengstoffwesen, Munich, October 1, 1914, p. 348-349.

Lighting

Gaster, Leon, and J. S. Dow. Modern illuminants and illuminating engineering. London: Whittaker & Co., 1915. 462 illus. 8°. (The specialists' series.)

p.

Brings together in a single well illustrated volume of four hundred and sixty-two pages a wealth of authoritative information regarding the various illuminants and their history, photometry, effects of illumination and of color on the eye, and the practical problems of interior and exterior lighting. The bibliographical notes are a feature.

"Generally the authors are to be congratulated upon the production of a readable book, and students possessed of ordinary technical knowledge will find the vast amount of information thus collected, together with various comments and the numerous references for those who wish to specialize, of a very serviceable character"-From a review in Journal of Gas Lighting & Water Supply, London, April 20, 1915, p. 132–133, April 27, p. 193–194.

Also reviewed in Electrical Engineering, London, April 15, 1915, p. 163; in Lighting Journal, New York, July, 1915, p. 161; in Journal of the Royal Society of Arts, London, July 23, 1915, p. 803; in the Gas World, London, July 24, 1915, p. 82-83.

Godinez, F. L. Display window lighting and the city beautiful; facts and new ideas for progressive merchants. New York: W. T. Comstock Co., 1914.

226 p. illus. 8°.

Author has been retained by the Public Service Electric Company of New Jersey to advise merchants regarding “lighting that is more useful — in being more

reliable and permanent — and of nearer approach to those esthetic ideals which find their beginning in a radical departure from the common-place and ugly equipment which predominates everywhere." Has chapters on sign lighting and color attraction. A wealth of half-tone illustrations. Adapted to the needs of the lay reader.

"An interesting discussion on the different light powers and their uses is given and this section of the book alone will be invaluable to those interested in display lighting. Several color plates have been used to show the highest degree to which effective lighting may be made. The photographs used to illustrate the text are excellent and these, together with drawings and diagrams, make it particularly intelligible."-From a review in the Upholsterer, New York, June 15, 1915, p. 71.

Mechanical Engineering

*Batey, John. Steam boilers and combustion.

Scott, Greenwood & Son, 1915.

211 p.

series of engineering handbooks. v. 15.)

12°.

London: (Broadway

"Chapters IV to and including VII are devoted chiefly to types of boilers. In these chapters there is practically nothing that is new or that is not common knowledge and found in nearly every book on the subject of boilers. The use of the chapters may be justified, however, as conducing to a better understanding of the balance of the book, which treats of combustion, movements of gases, boiler performances, etc. Being an English book, the Scotch and other British types of boiler are treated of and referred to chiefly."-From a review in Power, New York, Aug. 10, 1915, p. 216.

Burley, George W. Lathes: their construction and operation. London: Scott, Greenwood & Son, 1913. 12°. (Broadway series of engineering handbooks v. 14.) illus. 12°.

"The limits of the book restrict the author in going much beyond the elementary principles of the lathe and the materials worked upon, but so far as it goes it is sound and may be regarded as a useful text book to the elementary engineering student."-From a review in the Mechanical Engineer, Manchester, April 23, 1915, p. 316.

Also reviewed in Canadian Engineer, Toronto, June 24, 1915, p. 707; in Machinery, New York, July, 1915, p. 948; in Mining and Scientific Press, San Francisco, July 10, 1915, p. 70; and in National Engineer, Chicago, Aug., 1915, p. 450.

Burrows, C. H. A text-book on welding and cutting metals by the oxyacetylene process... Minneapolis: Vulcan Process Co., 1915. 134 p. illus. 3. ed. rev. 8°.

A very practical little treatise originally published as a book of instructions for users of Vulcan equipment, but containing much general information. Has chapters on elementary physics and chemistry as pertaining to the art.

Reviewed in Railway Age Gazette (Mechanical ed.), July, 1915, p. 331.

Daugherty, Robert Long. Centrifugal pumps. New York: McGraw-Hill Book Co., Inc., 1915. illus. 8°.

192 p.

"This book has a special appeal for the practical man who wants to know how, rather than why; that is, the construction and operation of centrifugal pumps are treated in such a manner as to be exceedingly valuable to the practical man while only the essential theories are developed. The author undoubtedly

knows centrifugal pumps, as is evidenced by the field he has covered under the descriptions of the various types."-From a review in Journal of the Western Society of Engineers, Chicago, April, 1915, p. 393-94.

Also reviewed in Engineering Record, New York, April 24, 1915, p. 532; in Mining & Scientific Press, San Francisco, April 17, 1915, p. 634; in Canadian Engineer, Toronto, May 27, 1915, p. 611; in Electrical World, New York, July 10, 1915, p. 78; in Practical Engineer, Chicago, Aug. 1, 1915, p. 758.

Dowd, Albert A. Tools, chucks and fixtures; a comprehensive and detailed treatise covering the design and use of cutting tools and holding devices employed in turning and boring operations in modern manufacturing plants for obtaining accuracy and increasing production, by Albert A. Dowd. New York: Industrial Press, 1915. illus. 1. ed. 8°.

304 p.

Fleming, Burton Percival. Practical irrigation and pumping; water requirements, methods of irrigation, and analyses of cost and profit. New York: J. Wiley & Sons, Inc., 1915.

226

Author, who is head of the department of mechanical engineering in the State University of Iowa, brings to the preparation of this work eight years of practical irrigation experience.

"Mr. Fleming's book is written for the man who is considering the installation of a small pumping plant. He tells him first how much water he should have for the irrigation of the various crops, how large a stream he should have to work economically, and the area which he can irrigate in a ten-hour day with streams of different sizes...all of which the man must know to decide intelligently how large a plant he should have... The book, as a whole, is typical of Mr. Fleming's work as an investigator and a teacher, with which the reviewer has been familiar for years, and shows a very unusual combination of theoretical knowledge and common sense."-From a review in Engineering News, New York, June 17, 1915, p. 1174.

Also reviewed in Engineering Record, New York, April 3, 1915, p. 436; in Engineering & Contracting, Chicago, April 28, 1915, p. 388; in Canadian Engineer, Toronto, May 27, 1915, p. 610.

Furman, Franklin De Ronde. Valves and valve gears. v. 1. New York: J. Wiley & Sons, Inc., 1915.

v. 1: Steam engines and steam turbines.

2. ed.

8°.

A practical work originally issued privately for use in the Stevens Institute of Technology. The new edition represents considerable expansion especially with reference to steam turbines. A second volume dealing with internal combustion engines is announced to follow.

"Professor Furman has been very successful in his arrangement of material and treatment of the subject which is especially well adapted to the work of instruction. Numerous problems to be worked out in the drawing room accompany the text, and the method of procedure in each case is logically presented. The introduction of preliminary freehand exercises for drill before taking up the more detailed drafting-room problems is an excellent feature which must appeal to the teacher of machine design."-From a review of the first edition in Engineering News, New York, March 14, 1912, p. 510.

2. ed. reviewed in Machinery, New York, July 1915, p. 948; in Mining & Scientific Press, San Francisco, June 19, 1915, p. 971; in Engineering News, July 15, 1915, p. 119; in American Machinist, New York, July 29, 1915, p. 218.

Greene, Arthur Maurice. Heat engineering; a text book of applied thermodynamics for engineers and students in technical schools. New York: McGraw-Hill Book Co., Inc., 1915. 462 p. illus. 8°.

For advanced students. Special consideration of air compressors, steam engines, steam nozzles, injectors, steam turbines, condensers, cooling towers, evaporators, internal combustion engines, and refrigeration. Many practical problems.

"For operating engineers, however, who may be striving to acquire a technical education by private study, and who have already negotiated a complete and profitable passage through the elementary mathematics, algebra and geometry, it is likewise an admirable work... The book is well printed and bound, and is plentifully supplied with diagrams and drawings of apparatus."-From a review in the National Engineer, Chicago, June, 1915, p. 328.

Also reviewed in Power, New York, May 11, 1915, p. 660; in Electrical World, New York, May 15, 1915, p. 1248; in Engineering News, New York, Aug. 19, 1915, p. 356.

New York:

Hancock, Edward Lee. Hancock's Applied mechanics for engineers, revised and rewritten by N. C. Riggs... Macmillan Co., 1915.

441 p. 12°.

"This work, the original edition of which was published in 1909, is intended as a text-book for engineering students of advanced standing in technical schools. Problems pertaining to practical engineering work are given in abundance. Graphical methods in the solution are used quite as freely as are the methods of analysis. This feature commends the book to working engineers who may be desirous of perfecting their educations by private study. The general flavor of the work, however, stamps it essentially as a class book; and as such, it is a good one." -From a review in the National Engineer, Chicago, June, 1915, p. 328.

Haven, George Bartholomew, and G. W. SWETT. The design of steam boilers and pressure vessels. New York: J. Wiley & Sons, Inc., 1915.

416 p.

illus. 8°.

Authors are professors in the Massachusetts Institute of Technology.

"This book forms an interesting addition to the books on boiler design, and was written by men who have had considerable experience in teaching such work, so that the matter is well put and illustrated by clear working drawings of many details."-From a review in Canadian Engineer, March 25, 1915.

Also reviewed in Power, New York, July 27, 1915, p. 135.

*Jervis-Smith, Frederick John, 1848-1911. Dynamometers, by Rev. Frederick John Jervis-Smith... Edited and amplified by Charles Vernon Boys... London: Constable & Co., Ltd., 1915. 267 P. illus. 8°.

"Prof. Boys to whom the task fell to complete and prepare for publication this work of the late Rev. F. J. Jervis-Smith, has prefaced it with a charming little biographical note of the author, who is well known as having been the pioneer of engineering education at Oxford, and had devoted close attention for many years to problems in the measurement of power. The book deals with dynamometry with great thoroughness, giving us an interesting historical sketch of experimental progress, setting forth such theoretical considerations as are required with clearness, and describing the construction and working of practically every apparatus that has been devised for the measurement of mechanical power, including appliances for the laboratory, the test bed, the steamship, and the