Abbot, Charles Greely. Everyday mysteries. Secrets of science in the home. New York: The Macmillan Co., 1923. vi, 198 p. illus. 8°. $2.25. OAG (117)

Twenty chapters on simple science for young and old "to be read rather than studied." Treats of water, bacteria, soap, clocks, doorbells, forging, waterpower, soils, soldering, coal, textiles, foods, depth of the ocean, sound, shoes, the sun and its uses, paper and printing. Author is assistant secretary of the Smithsonian Institution.

The Aircraft year book, 1923, compiled by Charles E. Lee, edited by C. G. Grey. London: Sampson Low, Marston & Co., Ltd., 1923. 182 p. illus. 12°. 6s.

VDS (121)

Details of transport, operating, manufacturing, and miscellaneous companies throughout the world; aerial clubs and institutions; air lines; publications; British aerodromes; types of aeroplanes and motors; aviation records; legislation; glossary; air mails; air stamp collecting; development of aerial photography.

Aitchison, Leslie, and W. R. BARCLAY. Engineering non-ferrous metals and alloys ...with an introduction by Sir George G. Goodwin. London: Henry Frowde & Hodder & Stoughton [19231. xx, 300 p. illus. 8°. (Oxford technical publications.) 21s. VID (117)

Part 1 is general, covering properties and constitution, casting and working, heat treatment, mechanical properties and testing. Part 2 deals with individual metals and alloys. Dr. Aitchison is consulting metallurgist to the British Air Ministry.

"In our endeavour to present metallurgical information in the simplest form, so that it can be readily assimilated by our readers, we have occasionally, and particularly in Part 1, used scientific terms in a way that perhaps would not withstand the most rigorous scrutiny of the academic metallurgist." — Preface.

Albert, C. D. Machine design drawing room problems. New York: John Wiley & Sons, Inc., 1923. vi, 320 p. illus. 8°. $3.00. VFG (121)

"Presupposes a knowledge of kinematics, mechanics, and engineering drawing... Purposes to offer complete material for a drawing room course in general machine design and is based upon the belief in the superior value of complete, comprehensive problems over problems dealing with unrelated details or groups of details. It assumes that a separate recitation course is given based upon some standard text on general machine design." Preface.

Author is Professor of Machine Design, Cornell University.

*American Magnesium Corporation. Magnesium, a hand-book of information and data relating to the use of magnesium and magnesium alloys... Niagara Falls,

N. Y.: American Magnesium Corporation, 1923. xii, 177 p. illus. 12°. $2.50. VIT (117)

Chemical and physical properties, magnesium alloys, mechanical properties, commercial forms, fabrication, surface finishing, chemical and structural uses, methods of analysis.

Andrade, E. N. da C. The structure of the atom. London: Bell & Sons, Ltd., 1923. xiv, 314 p. illus. 8°. 16s. PAW (117)

Critical account of work done to March, 1923, Enwith selected bibliographies at chapter endings. deavors to reconcile the dynamic theory of Bohr and Sommerfeld with the static theory developed by Lewis, Kossel, and Langmuir.

"Where I have introduced mathematical calculations I have tried to make perfectly clear what are the physical assumptions involved and what are the results obtained, so that those unwilling, for one reason or another, to follow the actual working may omit to do so without necessarily losing sight of the nature of the argument.". - Preface.

Reviewed in Chemical news, Aug. 31, 1923. *Andrée, K. Geologie in Tabellen für Studierende der Geologie, Mineralogie und des Bergfachs, der Geographie und der Landwirtschaft. Berlin: Gebrüder Borntraeger, 1922. xv, 228 p. tables, diagrs. 8°. 8s. Desk (117)

"Consists, with the exception of a brief introduc tion of 26 pages, entirely of tabular matter, covering almost every possible phase of geology and a considerable field of mineralogy. These tables are priImarily divided into two chief groups, called general geology, and palaeogeography and earth history respectively. The first class includes physical geology. mineralogy, and petrology, while the second deals with palaeontology and stratigraphy. Both categories are interpreted in a liberal sense, and contain a good deal of matter not usually to be found in geological text-books."- Geological magazine, April, 1923.

ments and references for further reading. Comprehensive, including: fuels, prevention and extinguishing of fires, water, waste disposal, cleaning and polishing agents, stain removal, textiles, dyes, cellulose industries, paints and varnishes, silicate industries, toilet preparations, foods, drugs. Author is Assistant Professor of Chemistry, Pennsylvania State College.

Benson, William S. The merchant marine, a "necessity in time of war; a source of independence and strength in time of peace." New York: The Macmillan Co., 1923. x, 183 p. 8°. $1.75.

TR

Rear Admiral Benson served as Director of Naval Operations of the United States Navy during the late war, and as Chairman of the United States Shipping Board, 1920-1921. Gives a brief survey of the foreign commerce of earliest times, discusses the early commercial activities of Great Britain, the colonial period in American shipping, the whaling industry, American packets and clippers, steam navigation, gov. ernment aid (which he approves), and the United States Shipping Board.

Reviewed in Proceedings of the United States Naval Institute, Aug., 1923.

Blake, Ernest G. Damp walls; a handbook on the various causes of dampness in house walls and the best methods for architects, builders, surveyors, and property owners in dealing with this troublesome defect, with a chapter on condensation and notes on waterproof building construction. London: Crosby Lockwood & Son, 1923. viii, 248 p. illus. 12°. 8s. 6d. VEC (121)

"The subject is rather a difficult one for the nontechnical mind, but it has been closely studied by those who are fully competent...with the result that, by taking advantage of the known natural laws and forces... various methods have been devised by which the problem can be solved, and the difficulties overcome in the quickest and most permanent manner.' Preface.

Brahdy, Joseph. Blueprint reading for machine shop and related trades. New York: D. Van Nostrand Co., 1923. 108 p. illus. obl. 8°. $2.50. VFE (121)

The most complete work of its kind. Teaches enough practical drawing to fix principles firmly in the reader's mind. A large number of fac-simile blueprints and searching questions concerning their details. Author is instructor at the Brooklyn Vocational School, also at the Brooklyn Evening Technical and Trade School. The make-up of the book is unusually attractive.

Reviewed in Journal of the American Society of Naval Engineers, Nov., 1923; Sibley journal of engi neering, Nov., 1923.

Brown & Sharpe Mfg. Co. Construction and use of Brown & Sharpe automatic screw machines, also automatic turret forming machines and automatic cuttingoff machines. A book for the operator. Providence: Brown & Sharpe Mfg. Co., 1923. 353 p. illus. 8°. $1.00. VFG (121)

Complete and fully illustrated explanation of operation, erection and care, setting-up, construction and adjustment, standard tools, designing and machining of cams, and attachments. Numerous tables.

Reviewed in American machinist, July 26, 1923. Bruce, C. G., and others. The assault on Mount Everest, 1922... New York: Longmans, Green & Co., 1923. xi, 339 p. illus. 4°. $7.50. PSK (120)

In 1922 Colonel Howard-Bury and other members of his expedition published an account of the prelimi nary work essential to scaling Mt. Everest (see New

technical books, April-June, 1922, v. 7, no. 2, p. 21). In the present volume Gen. Bruce and several of his associates describe in detail the first serious climbing and the hardships endured. An elevation of 27,000 feet was attained. Especially interesting is the account of the oxygen apparatus used for breathing. Attractively printed and illustrated.

Caldwell, Otis W., and E. E. SLOSSON, editors. Science remaking the world. Garden City: Doubleday, Page & Co., 1923. x, 292 p. illus. 8°. $3.00. OAI (117)

Achievements and obligations of modern science, by O. T. Caldwell. Gasolene as a world power, by E. E. Slosson. Influence of coal-tar on civilization, by E. E. Slosson. Electrons and how we use them, by John Mills. Investigation on epidemic influenza, by P. K. Olitsky and F. L. Gates. Our present knowledge of tuberculosis, by L. R. Williams. Louis Pasteur and lengthened human life, by O. T. Caldwell. International public health, by G. E. Vincent. Educational value of modern botanical gardens, by G. T. Moore. The meaning of evolution, by J. M. Coulter. Our fight against insects, by L. Ó. Howard. Insect sociology, by Vernon Kellogg. How the forests feed the clouds, by Raphael Zon. The modern potato problem, by C. O. Appleman. Chemistry and economy of food, by H. C. Sherman. Our daily bread and vitamins, by W. H. Eddy.

*Chatterton, E. Keble. Ship models. Edited by Geoffrey Holme. London: Studio, Ltd., 1923. 53 p. illus. sq. 4°. $18.00. + VXH (121)

Beautifully executed plates, some in color, with descriptive introductory text. Most of the models represent ships built since the 15th century.

"An attempt has been made for the first time on record to collect, before it is too late, the finest authentic models of sailing craft that are not merely beautiful in themselves, but may be regarded as providing a pictorial representation of the ship's develop. ment until the age of steam.'

Coffignier, Charles. Varnishes, their chemistry and manufacture... Translated from the French by Arthur H. J. Keane. London: Scott, Greenwood, 1923. 547 p. illus. 8°. 21s. VOP (119)

"The original has been faithfully followed, even where French practice...differs from English methods.' Publishers' preface.

"Although the chemistry of the subject is not neglected, it is the very large number of useful recipes that constitute the main feature of the book, and should render it of practical value to the British varnish maker."- Oil and colour trades journal, Aug. 18, 1923.

Collins, A. Frederick. The book of the microscope. New York: D. Appleton & Co., 1923. xv, 245 p. illus. 8°. $1.50. OCC (117)

Of the "popular" type, aiming at "a working knowledge of not only the microscope itself but the elementary principles as well of botany, zoology and histology and of the structure of the materials that make up the inorganic world."

Cooper, F. J. Textile chemistry, an introduction to the chemistry of the cotton industry. London: Methuen & Co., Ltd. [1923. ix, 235 p. illus. 8°. 10s. 6d.

VLLE (121)

Part 1 deals with general chemistry and laboratory procedure; part 2, with the natural fibres, machinery, sizing, bleaching, dyeing and mercerizing. 240 line drawings. Author is a teacher in the Technical College, Blackburn, England.

"The part dealing with pure chemistry contains a large number of diagrams which are exceedingly well