Sabine, Wallace Clement. Collected papers on acoustics. Cambridge: Harvard University Press, 1922. ix, 279 p. illus. 4°. $4.00. PFB (117)

Contains most of the important contributions to the subject by the late Hollis Professor of Mathematics and Natural Philosophy in Harvard University. Covers reverberation, the accuracy of musical taste in regard to architectural acoustics, the variation in reverberation with variation in pitch, melody and the origin of the musical scale, effects of air currents and of temperature, sense of loudness, the correction of acoustical difficulties, theatre acoustics, building material and musical pitch, architectural acoustics, insulation sound and whispering galleries. An appendix discusses the measurement of the intensity of sound and on the reaction of the room upon the sound. Well illustrated and printed.

"Such a record is of great value, not only to other investigators in the same field but to those who wish to know the steps by which the science or the art has reached its present development." Journal of the Franklin Institute, April, 1922.

*Shreve, H. Norris. Dyes classified by intermediates. Dyes tabularly arranged under each intermediate, with statistical and other data for both dyes and intermediates. Glossary of dye and intermediate names alphabetically arranged...in collaboration with W. R. Watson and A. R. Willis. New York: Chemical Catalog Co., Inc., 1922. 631 p. 8°. $10.00 VOR (118)

To the dye chemist this remarkable book should come as a godsend. It is packed with systematized information that would do credit to German thorough. ness. The intermediates are alphabetically arranged by the names which are clearest and which are sanctioned by custom. Other synonyms are also given and a cross reference made from each. The structural formula, empirical formula, molecular weight, a brief statement concerning method of formation, literature references, a list of derived dyes (with Schultz numbers), and available statistics of production are given in each case. There is a complete index arranged by formulas, a glossary of dye names with the manufacturer's names, and a page index of Schultz numbers for dyes.

Reviewed in Journal of the Franklin Institute, July, 1922.

Starling, Sydney G. Science in the service of man: electricity. London and New York: Longmans, Green & Co., 1922. viii, 245 D. illus. 8°. $3.50. VGC (121)

"The book is most interesting reading from start to finish. The historical section is not by any means lengthy or prosy, and the subsequent chapters dealing as they do with the electro-magnet, dynamo, motor, alternating currents, lighting, telegraphy, telephony, batteries, etc., are all equally readable and interesting, while the illustrations are clear and thoroughly explanatory. At the end there is a brief explanation of the electrical terms in general use which should prove of direct value to the non-technical reader who

*Stephenson, Charles H. Some microchemical tests for alkaloids, including chemical tests of the alkaloids used by C. E. Parker. Philadelphia: J. B. Lippincott Co. [cop. 1921., 110 p. illus. 8°. $4.00. PPB (118)

Results of work done, chiefly between 1907 and 1910 by the United States Bureau of Chemistry on fifty-one alkaloids, using thirty-five reagents. Each of the thirty-seven plates shows six microphotographs of crystalline precipitates.

*Stewart, Alfred W. Some physicochemical themes. London and New York: Longmans, Green & Co., 1922. xii, 419 p. illus. 8°. $7.00. PLD (118)

This advanced work by the well-known professor of chemistry at Queen's University, Belfast, aims to show the student his way in the literature of certain branches of inorganic and organic physical chemistry, i. e. residual affinity, double salts, oceanic salt deposits, complex salts and ions, pseudo-acids, indicators, non-aqueous ionising media, colloids, Brownian movement, distribution of particles in emulsions, Avogadro's constant and some molecular dimensions, adsorption, catalysis, spectra, chemical affinity, the periodic law and atomic structure.

"I have endeavoured, whenever possible, to keep clearly separate from each other the experimental facts and the hypotheses by means of which attempts have been made to account for these facts, so that the student should be under no illusions as to where facts end and theories begin." — Preface.

*Szepesi, Eugene. Cost control and accounting for textile mills. New York: Bragdon, Lord & Nagle Co. [cop. 1922.1 xxiv, 441 p. illus. 8°. $10.00. TMT

Mr. Szepesi, who is the well-known head of a large industrial organization, as well as an authoritative contributor to periodicals, points the way to a standardization of cost systems for each branch of the industry. Problems are dealt with in detail and with numerous diagrams, charts, and forms.

Reviewed in Textile world, April 22, 1922.

*Thomson, Sir J. J. Rays of positive electricity and their application to chemical analyses. London and New York: Longmans, Green & Co., 1921. x, 237 p. 2. ed. illus. 8°. $5.25. PEW (117)

First edition, published in 1913, gave results of experiments covering seven years at the Cavendish Laboratory and also included short accounts of other investigations. The author states that his hope for the efficiency of this analytical method has been ful filled to a remarkable extent by the researches of Aston and others; and that we are at the beginning of a harvest of results which will elucidate the process of chemical combination, thus bridging over the most serious gap which at present exists between physics and chemistry. The new edition contains a considerable amount of new material both in the text and in the plates.

Reviewed in Engineering, Dec. 23, 1921.

Thomson, J. Arthur. The outline of science. a plain story simply told. v. 1. New York: G. P. Putnam's Sons, 1922. xix, 296 p. illus. 4°. $3.75 a volume.

O (117)

This notable work by the professor of natural history in the University of Aberdeen does for science

what H. G. Wells has done for history. It is no easy task to weave the warp and woof of natural history, astronomy, geology, physics, and chemistry into an harmonious whole so that the general reader may not be tempted to lay the book down as beyond his ken. Professor Thomson has succeeded in giving to "the intelligent student-citizen, otherwise called 'the man in the street,' a bunch of intellectual keys by which to open doors which have been hitherto shut to him." The work is of quarto size, intelligently and copiously illustrated with well-executed plates (many of them in color). The first of the four volumes, now before us, tells of the romance of the heavens, the story of evolution, the dawning of mind, and the foundations of the universe, i. e.: atoms, X-rays, radium, electrons, energy, and the theory of relativity.

Reviewed in Nature, Dec. 8, 1921.

Thomssen, E. G. Soap-making manual; a practical handbook on the raw materials, their manipulation, analysis and control in the modern soap plant. New York: D. Van Nostrand Co., 1922. viii, 243 p. illus. 12°. $4.00. VON (118)

Originally published in the American perfumer and essential oil review. Brief, simple, and designed to assist the soap-maker to make his own tests independently of the chemist.

*Thorpe, Sir Edward. A dictionary of applied chemistry. rev. and enl. ed. v. 3. New York: Longmans, Green & Co., 1922. viii, 735 p. illus. 8°. $20.00. VO (118)

Third volume of the previous edition of this standard work completed the alphabet through Oils. The corresponding volume of the new edition completes the letter K. The section on explosives is enlarged by 25 pages, fermentation by 7, fuel by 3, glass by 4, glycerine by 4, hydrogen by 2.

"It is to be noted that even "Gas warfare" takes its place among the articles, and though the treatment given to the subject is brief, it is in itself sufficient to indicate that the dictionary has not been 'revised' as the word is frequently understood by some authors and publishers, but has been very largely rewritten, and is as up-to-date as the interval between the receipt of manuscripts and final appearance could possibly permit." Chemical age, London, May 20, 1922.

Also reviewed in Chemical trade journal, April 21, 1922.

Timbie, William H., and VANNEVAR BUSH. Principles of electrical engineering. New York: John Wiley & Sons, Inc., 1922. viii, 513 p. illus. 8°. $4.00. VGC (121)

Basic principles for students of college grade who have a knowledge of physics and calculus, and designed as an introduction to detailed courses in direct current and alternating current machinery. The magnetic circuit is treated more fully than usual and the electron theory is freely used. The subjects of thermionic emission, conduction through gases, electrolytic conduction, certain high-frequency phenomena, and the behavior of dielectrics have been included. There are about 500 practical problems. Authors are Associate Professors of Electrical Engineering in the Massachusetts Institute of Technology. Reviewed in Engineering world, May, 1922.

*Tompkins, Ernest. Knitting calculations, a cross-indexed text book of practical problems in flat and rib knitting on the interrelation of yarn number; diameter;

needles per inch; stitches; needle speed; production in pounds, square yards, linear yards and dozens of garments; weight of fabric, tensile strength both ways, width, thickness and appearance; with chapters on yarn counts and their conversion; single equivalent of multiple yarns; proportions of yarns in multiple thread work; winder capacity; fabric analysis, single and multiple thread, common stitch and warp; miscellaneous problems; and so on. Written for Textile world. New York: Bragdon, Lord & Nagle Co. [cop. 1922. 83 p. 8°. $3.00. VLB (121)

"A great proportion of the problems, instead of being worked out for this book, are problems which were previously solved to meet some actual requirement; so, if it is true that history repeats itself, they should be of practical use." - Preface.

Twelvetrees, W. Noble. Concrete and reinforced concrete. London and New York: Sir Isaac Pitman & Sons, Ltd. (1922.] x, 137 p. illus. 12°. $1.00. (Pitman's common commodities and industries.) VEO (121)

This concise little book is designed to interest the general reader and to be of service to those engaged in the practical application of concrete to engineering and building construction. The contents cover the origin and history of concrete; raw materials; proportioning, mixing, and depositing; moulds and shuttering; surface treatment; concrete blocks and moulded products; physical properties of concrete; reinforced concrete; and concrete shipbuilding. Simply written and has good illustrations.

Wanamaker, E., and H. R. PENNINGTON. Electric arc welding. New York: SimmonsBoardman Publishing Co. (1922. xi. 254 p. illus. 8°. $4.00. VID (115)

Practical up-to-date work, the outgrowth of a series of articles written for the Railway electrical engineer. Contents conveniently and logically arranged for ready reference. Shows the equipment required, its installation, the fundamental principles, various processes, training, composition of materials welded, preparation of work for welding, application and use in railway and structural engineering. Well illustrated.

Reviewed in American machinist, March 30, 1922; Power, March 21, 1922.

*Westcott, Henry P. Handbook of casinghead gas. Erie, Penn.: Metric Metal Works, 1922. xvii, 642 p. 3. ed. tables. illus. 8°. VHY (117)

Second edition of this comprehensive work was published in 1918. Since then "there have not been many radical changes in the method of extraction of gasoline from casinghead gas, but there have been many minor improvements,' of which accounts are given in the present somewhat enlarged edition. Covers the properties of gases; field examination; gas lease; specific gravity; capacity of casinghead gas wells; gasoline content; gathering lines; air in casinghead gas; measuring; compression plant; blending; absorption plant; gasoline; dangers of casinghead gas and gasoline; transportation of gasoline; gasoline mar ket and prices; and various other matters of interest. Well supplied with tables and statistics.

Williams, S. T., and J. HOWARD PILE. The automobile repairman's helper. A pocket book for the mechanic, owner, chauffeur

and student, covering every trouble likely to be found in all the standard cars and including chapters on inspection and lubrication; drills; taps and lathes; welding; storage batteries, cylinder and piston ring work; bearings, axle adjustments; repairing tops, mudguards, lamps, tire vulcanizing and repairing, electrical equipment, truck repairing, etc. New York: U. P. C. Book Co., Inc. [cop. 1921-22., 2 v. illus. obl. 12°. $3.00 a volume. TON (121)

The first part of v. 1 is devoted to general shop practice. The remainder of the work gives in detail the operations on standard makes and on some of the standard accessories. This revision of a previous work is practically a new book.

ACOUSTICS: Sabine, 24.

ALKALOIDS: Stephenson, 24.

AUTOMOBILES: Jones, 21; Williams & Pile, 26.

CATALYSIS: Falk, 19.

CHEMICAL ANALYSIS: Thomson, 24.

CHEMISTRY: Thorpe, 25.

CHIMES: Electric, 19.

CLOCKS: Electric, 19.

COAL: Moore, 22.

CONCRETE: Twelvetrees, 25.

COST ACCOUNTING: Szepesi, 24.
DICTIONARIES: Hellbusch, 21.
DISTILLATION: Young, 26.
DYES: Shreve, 24.

EARTHWORK: Gardner, 20.

ELECTRICITY: Cisin, 18; Lawrence, 21; Rey-

nau, 23; Starling, 24; Thomson, 24; Tim-
bie and Bush, 25.

ELECTRO-METALLURGY: Gow, 20.
ENGINES: Petrie, 23.

ENGINES (Aero): Angle, 17.

ENGINES (Diesel): Schenker, 24.

FATS: Hull, 21; Lewkowitsch, 21.
FOUNDRIES: Foundrymen's, 20.

FUELS: Findley, 19; Gould, 20; Hausding,
21; Hull, 21; Moore, 22.

GAS: American Gas Ass'n., 17; Meade, 22.
GAS (Natural): Westcott, 26.
GEARS: Bramley-Moore, 17.
GEOLOGY: Emmons, 19.

HEATING: Allen & Walker, 17.

HYDROCARBONS: Brooks, 18.
ISOTOPES: Aston, 17.

JEWELS Kozminsky, 21.

JIGS AND FIXTURES: Dowd, 19.

KNITTING: Tompkins, 25.

MATERIALS: Mills, 22.

MATHEMATICS: Beck (Ernest G.), 17; Key-

ser, 21; Passano, 23.

METEOROLOGY: Redway, 23.

MICROSCOPE: Beck (Conrad), 17.

MILLING MACHINES: Hammond, 20.

MINERALOGY: Dana, 18.

MOUNT EVEREST: Howard-Bury, 21.

MOVING PICTURES: Macbean, 22.

Ons: Hull, 21; Lewkowitsch, 21; Schenker,

24.

PATENTS: Potts, 23.

PEAT: Hausding, 21.

PETROLEUM: Redwood, 23.

PHENOL: Great Britain, 20.

PHYSICAL CHEMISTRY: Stewart, 24.

PHYSICS: Dictionary, 19.

PICRIC ACID: Great Britain, 20.

PLUMBING: Hansen, 21.

POWER: Polakov, 23.

REFRIGERATION: Macintire,, 22.

RESEARCH: Fleming & Pearce, 19; Potts, 23.

RIVERS: Verrill, 25.

SCIENCE: Thomson, 24.

SEWAGE DISPOSAL: Babbitt, 17.

SEWERAGE: Babbitt, 17.

SHOPS: Greene, 20.

SILVER Cronshaw, 18.

SOAP: Thomssen, 25.

SPINNING (Hand): New York Public Li-
brary, 22.

SPONGES Cresswell, 18.

STEAM ENGINEERING: Croft, 18.

STEEL: Gow, 20.

STRUCTURES (Framed): Ellis, 19.

SULPHUR: Auden, 17.

TELEGRAPHY (Wireless): Mittell, 22.

TEXTILE MILLS: Szepesi, 24.

TUNNELING: Brunton & Davis, 18.
VENTILATION: Allen & Walker, 17.

VISUAL ILLUSIONS: Lukiesh, 22.

VITAMINS: Plimmer, 23.

WALL PAPER: Ward, 26.

WATER POWER: Gibson, 20.

WAXES: Lewkowitsch, 21.

WEAVING (Hand): New York Public Li-
brary, 22.

WELDING: Davies, 18; Wanamaker, 25.
ZIRCONIUM: Venable, 25.