American Engineering Council. Industrial coal, purchase, delivery, and storage. New York: The Ronald Press Co., 1924. ix, 419 p. 8°. $5.00. VHW (117)

Formulation of a survey by 400 engineers in leading industrial centers, with the purpose of obviating the difficulties due to the prevailing intermittance of operation. Emphasizes the need of greater storage facilities.

Reviewed in Iron trade review, Jan. 8, 1925; Jour nal of the Western Society of Engineers, Dec., 1924; Engineering world, Feb., 1925; Electrical world, Jan. 10, 1925.

Anderson, Robert J. The metallurgy of aluminium and aluminium alloys. New York: Henry Carey Baird & Co., Inc., 1925. xxxi, 913 p. illus. 8°. $10.00. VIT (117)

Outstanding work since the revision of Richards' treatise in 1896. Covers in detail the mining of bauxite, the various processes of production, properties of aluminium and its alloys, corrosion; preparation, descriptions, and uses of alloys; melting furnaces, foundry practice, die castings, rolling and other mechanical treatment, diagrams of thermal equilibrium, micrography and macrography, heat treatment, soldering and welding, fabricating operation. Amply illustrated. Bibliographies at chapter endings. Steers a course between the academic and the more practical viewpoints.

Reviewed in Industrial and engineering chemistry, July, 1925; Machinery, July, 1925.

Angle, Glenn D. Engine dynamics and crankshaft design. Detroit, Mich. : Airplane Engine Encyclopedia Co., 1925. 299 p. illus. VDY (121)

8°.

Partly a mathematical introduction to a proposed series on airplane engine design. Simplifies and condenses much scattered material into suitable form for the designer, but is also of value to the student and to those desiring to check the equations. Numerous bibliographies. Author was formerly in charge of airplane engine design, United States Army Air Service.

Connect

Annett, F. A., and A. C. ROE. ing and testing direct-current machines. New York: McGraw-Hill Book Co., Inc., 1925. x, 237 p. illus. 8°. $2.50. VGI (121)

Deals with the reconnection of machines for a change in voltage, speed, or both; also with the locating and remedying of faults. Most of the material was published in Power, during three years, 19211924.

Reviewed in Power, May 5, 1925.

Baskin, Janet. Artificial flower making, a practical craft for domestic science classes, girls' schools, women's institutes, trade classes for millinery and dressmaking, and the home worker. London and New York: Sir Isaac Pitman & Sons, Ltd., 1925. x, 150 p. illus. 8°. $2.50. VNK (121)

Excellent half-tone and colored illustrations show both finished results and process details.

Bassett, Henry. The theory of quantitative analysis and its practical application. London: George Routledge & Sons, Ltd., 1925. vii, 308 p. 8°. 15s. PMI (119)

Advanced work for students of analytical and physical chemistry. Illustrates and discusses the physico-chemical basis of analysis rather than the more purely chemical aspect.

Reviewed in Chemical trade journal, April 24, 1925.

Bogert, L. Jean. Fundamentals of chemistry, a text-book for nurses and other students of applied chemistry. Philadelphia and London: W. B. Saunders Company, 1924. 324 p. illus. 8°. $2.75. PPB (119)

Covers inorganic and organic chemistry with modern theoretical developments. Special attention to nutrition and biochemistry. Author is research chemist of the Henry Ford Hospital, Detroit, Michigan.

*Bottler, Max. Harze und Harzindustrie. Leipzig: Max Jänecke, 1924. viii, 236 p. 2. ed. rev. & enl. illus. 8°. 7.5 gold marks. VOP (119)

Comprehensive and up-to-date work on the working-up and industrial uses of balsams and resins. Chapter on artificial resins. Line drawings of various apparatus.

Bragg, Sir William. Concerning the nature of things. Six lectures delivered at the Royal Institution. London: G. Bell & Sons, Ltd., 1925. xi, 231 p. illus. 12°. 7s. 6d. PAW (117)

Popular account, by an eminent authority, of the new conceptions of atoms, gases, liquids; also of crystals as shown by the diamond, ice and snow, and metals.

Reviewed in Nature, April 11, 1925.

Carpenter, Leonard. Mechanical mixing machinery. London: Ernest Benn, Ltd., VOF (119) 1925. 138 p. illus. 12°. 6s.

66 Does not claim to be an exhaustive work on the subject. It is addressed more especially to the student of chemical engineering, to the young works chemist anxious to study the art of transferring a laboratory process to the works... It has only been possible to deal with the problems of mixing in comparatively few industries, and in these only in a somewhat superficial manner." - Preface.

Reviewed in Chemical and metallurgical engineering, May, 1925; Industrial and engineering chemistry, May, 1925.

Cary, Harold. Build a home-save a third. The story of Collier's house, from plans by Ernest Flagg, sketches by Warren S. Matthews. New York: Reynolds Publishing Co., Inc., 1924. 117 p. illus. 12°. $1.00. VEC (121)

Tells how the author, a novice, built a stone house by using the economical methods of Ernest Flagg. Photographs, detail drawings, and specifications.