Alexander, Jerome. Colloid chemistry. An introduction, with some practical applications. 2. ed. rev. and enl. New York: D. Van Nostrand Company, 1924. vii, 208 p. illus. 8°. $2.00. PLD (119)

First edition published in 1919.

"The author of this book is well known for his long. and earnest labors in the field of colloid chemistry and for his valuable contributions to its literature... The text presents a clear and concise exposition of the chemistry and physics of colloids... Will also be of use to the teacher of general chemistry, for many instructive experiments are given." Henry Leffmann in the Journal of the Franklin Institute, Dec., 1924.

Also reviewed in The American journal of science, Dec., 1924.

Anderson, John E., and E. H. LEWIS. Henley's workable radio receivers, their design and construction... New York: The Norman W. Henley Publishing Co., 1925. [11, 196 p. illus. 12°. $1.00. TTF (121)

Detailed descriptions of many types which, by long experience have proved to be the most satisfactory from the viewpoints of selectivity, sensivity, convenience and economy of operation, dependability and quality of reproduction. Has circuit and wiring diagrams, and describes principles underlying each. Includes a list of broadcasting stations, and a dictionary of radio terms.

*Armstrong, E. Frankland. hydrates and the glucosides. New York: Longmans, Green 293 p. 4. ed. 8°. $5.00.

The carboLondon and & Co., 1924. PPB (119)

Reset, with 54 pages more than the 3d edition (1919). Title is slightly changed to include a new chapter on complex carbohydrates. Largely a record of the work of Emil Fischer, who died in 1919.

"The chemical portion [has] been separated from the more purely physical: inasmuch as the monograph is intended for those who have previous knowledge of the general chemistry of the sugars no apology is needed for keeping it abstruse. It is in no way intended to serve as a dictionary." — Preface.

Aston, F. W. Isotopes. London and New York: Longmans, Green & Co., 1924. xi, 182 p. 2. ed. illus. 8°. $3.50.

PLD (119) Increase of 30 pages includes recent developments. See New technical books, v. 7, no. 2, April-June, 1922 for notice of 1st ed. (1922).

Atkin, Harry. Constructional steelwork. A manual of workshop processes, methods and machines. London: Chapman and Hall, Ltd., 1924. xii, 212 p. illus. and diagrs. 8°. (The Directly-useful technical series.) 9s. 6d.

VEH (121)

Layout and general equipment, unloading and straightening stock, descriptions of various machines and tools and their operations, rivets and riveting, and use of compressed air, with a chapter on "the human element." 117 illustrations.

Reviewed in English mechanic, Sept. 26, 1924; The Iron and coal trade review, Aug. 8, 1924.

Austin, F. E. Generator and motor examples. Hanover, N. H.: The author, 1924. vi, 108 p. illus. 8°. $2.50. VGI (121)

States fundamental principles plainly and concisely and presents graded problems designed to show the way to economical operation. Simple mathematics and good diagrams.

*Automobile engineering, a general reference work for repair men, chauffeurs, and owners; covering the construction, care, and repair of pleasure cars, commercial cars, and motorcycles, with especial attention to ignition, starting, and lighting systems, garage equipment, welding, Ford construction and repair, and other repair methods, prepared by a staff of automobile experts, consulting engineers, and designers of the highest professional standing. Chicago: American Technical Society, 1925. illus. 5 v. 8°. $19.80. TON (121)

Revision of former publications brings the information up to date. v. 3 has sections on aviation engines and gasoline tractors. v. 5 has numerous wiring diagrams and a glossary of automobile terms.

*Barton, Edwin H. Analytical mechanics, comprising the kinetics and statics of solids and fluids. 2. ed. rev. & enl. London and New York: Longmans, Green & Co., 1924. xxi, 593 p. diagrs. 8°. $6.00. PBB (117) First edition was published in 1911. Knowledge of the calculus required. Notable feature is the large number of examples (300 added in this ed.) chosen from the London examinations. Answers are given. Author is Professor of Experimental Physics, University College, Nottingham, England.

Reviewed in English mechanic, July 18, 1924.

Berg, Edward, and G. ELLESON. Machine drawing problems, a text and problem book involving a study of fundamental elements of machine construction and practice in the conventional representation of machine parts. Peoria: The Manual Arts Press, 1924. 148 p. illus. obl. 12°. $1.60.

VFE (121) "An advanced course for students who have had previous instruction in mechanical drawing and is intended for school use. The problems have been so chosen as to acquaint the student with the most common principles and materials used in machine construction, for the assembling of parts, transmission of power, control of motion, etc., and to offer training in the making of complete and accurate drawings... Each problem is presented in the form of a specification sheet and a lay-out sheet." - Preface.

Bishop, Calvin C. Electrical drafting and design. New York: McGraw-Hill Book Co., Inc., 1924. viii, 165 p. illus. 8°. $2.00. VFE (121)

Student should have equivalent of two-year course in mechanical drawing and a good working knowledge of electricity, including circuits, machines, under

writers' requirements, and some practical knowledge of wiring. Includes necessary dimensions, tables and charts. Author is head of the department of drafting and design in the Technical High School, Buffalo, N. Y.

*Bloch, Eugène. The kinetic theory of gases, translated by P. A. Smith. London: Methuen & Co., Ltd., 1924. xiv, 178 p. 12°. 7s. PCK (117)

"The small compass of this volume forbidding all purely mathematical developments, we shall be content to study the simplest hypotheses, for example that of elastic collisions, and to arrange the results in logical order; in a word, to expound the sequence of ideas rather than the detail of calculations. We shall refer the reader anxious to extend his knowledge to the works mentioned in the bibliography at the end of the volume." Preface.

Born, Max. Einstein's theory of relativity. Translated by H. L. Brose. London: Methuen & Co., Ltd., 1924. xi, 293 p. illus. 8°. 12s. PAT (117)

"The semi-historical method of representation here chosen occurred to me, and I hope I have succeeded in avoiding the uninspiring method of elementary text books of physics... The reader is assumed to have but little mathematical knowledge... I advise the reader who is troubled with the formulae to pass them by on the first reading and to seek to arrive at an understanding of the mathematical symbols from the text itself."- Preface.

Brame, J. S. S. Fuel, solid, liquid, and gaseous. London and New York: Longmans, Green & Co. [1924. xv, 388 p. 3. ed. illus. 8°. $6.00. VHV (117)

First published in 1914 and only slightly revised in 1917. 3d edition has new material on fuels for internal-combustion engines, on the use of powdered coal, on the ignition point of fuels of all classes, on the combustion of gaseous mixtures, on the problems of low-temperature carbonization, and on the composi tion of coal and its coking properties. Includes standard methods for the analysis of coal and petroleum products. Author is Professor of Chemistry, Royal Naval College, Greenwich.

Brashear, John Alfred. John A. Brashear; the autobiography of a man who loved the stars, edited by W. Lucien Scaife. New York: The American Society of Mechanical Engineers, 1924. xxii, 262 p. illus. 8°. $4.25. OABB (117)

A humble mechanic becomes the foremost maker of astronomic lenses and a master in the art of making plane surfaces -one "who combined the ability to work consistently with a real love for the object of his labor, and an unquenchable desire to share it with every one who could be interested in it." A notable account of a notable American.

Brennan, John F. Automobile identification; the method of identification used since 1916 and now compiled for use in police training schools. New York: Scientific American Publishing Co., 1924. 176 p. illus. 12°. $2.65.

TON (121)

Distinguishing features of a large number of cars manufactured since 1920, with numerous illustrations. Chapters on observation and deduction, scientific detective work, what the public should know and do, thefts and how to report them, courtesies by drivers, and the traffic regulations of the New York City Police Department. Also describes the registration plates of all the States. Author is in charge of automobile identification, New York Police Department.

Brooks, Charles Franklin. Why the weather! with the collaboration of John Nelson & others. New York: Harcourt, Brace & Co., 1924. xvi, 310 p. illus. 12°. $2.00. PRO (117) Phenomena of the four seasons simply explained for the general reader. Interesting chapters on thunderstorms and precautions against lightning.

*Bugden, Norman F. Cadmium: its metallurgy, properties and uses...with foreword by Prof. Thos. Turner. London: Charles Griffin & Co., Ltd., 1924. xiv, 239 p. illus. 8°. 21s. VİT (117)

Comprehensive digest of available information concerning this comparatively little used metal - its ores, production, statistics, physical and chemical properties, alloys, electro-deposition, and summary of uses. Good bibliographies. Author is associated with the University of Birmingham.

Reviewed in Iron and coal trade review, Sept. 19, 1924; Colliery guardian, Aug. 29, 1924; Ironmonger, Aug. 30, 1924.

fungi. London and New York: Longmans, Green & Co., 1909–24. 3 v., illus. 8°. v. 1, $5.00; v. 2, $8.50; v. 3, $10.00. QEY

"Dr. Buller's investigations, undertaken with the object of throwing light upon the production, liberation and dispersion of spores in the group of fungi known as the Hymenomycetes, breaks new ground, and, as usual in such instances, will undoubtedly form the starting point of future research on the part of many students." From a review of v. 1 in Nature, March 24, 1910.

"This work must form the basis of laboratory study and teaching on the Agaric hymenium for many years to come." - From a review of v. 2 in Nature, Oct. 27, 1923.

"

"In the present volume, eight more of the sub-types have been described, leaving two, the Plicatilis and the Curtus, for volume 4." - Preface to v. 3.

Chapter 13 of v. 2 treats of the common mushroom. Author is Professor of Botany in the University of Manitoba.

*Callen, A. C. Explosives. Chicago: Burton Publishing Co., 1924. 77 p. illus. 8°. (Extension study course in coal mining.) 25¢. VOD p.v.

Articles published 1922-23 in Coal mine management. Treats of low and high explosives, permissible explosives, methods of firing, storage, thawing. Author is Professor of Mining Engineering, West Virginia University, and editor of Coal mine manage

ment.

*Callender, H. L. The enlarged Callender steam tables (Fahrenheit units). London and New York: Longmans, Green & Co., 1924. 80 p. tables. 8°. $2.50. PDN (117)

"To be regarded as more or less of a supplement to his well-known larger work, The properties of steam. He has extended the saturated steam tables down to a vacuum of 29.5 inches at intervals of 0.05 in. in the higher vacuum region... The bulk of the work is occupied by additions at the other, the superheated steam end. Here we find the properties of steam set out for pressures ranging from 1 lb. per square inch absolute up to 2000 lb. and up to round about 400 deg. Fah. of added superheat temperature." Engineer, Nov. 14, 1924.

Also reviewed in Engineering, Oct. 31, 1924.

*The Chemical Age chemical dictionary. Chemical terms. London: Ernest Benn, Ltd., 1924. 158 p. sq. 8°. 16s. PKF (119)

Clearly printed list with brief but adequate definitions and numerous cross references. Covers terms in organic, inorganic, physical, analytical, and biochemistry. Later volumes will deal with particular elements and compounds.

"Compiled by experts to meet the needs of all those who have to consult not only original papers or their abstracts but other forms of literature as represented by reviews and modern textbooks. It will, therefore, make a direct appeal to all chemists from the student to the director of research." - Preface.

Collins, Francis A. Our harbors and inland waterways. New York: The Century Co., 1924. 295 p. illus. 8°. $2.00.

VDN (121)

A large subject "boiled down" for the general reader. Tells about the world's oldest harbors; how harbors are planned; peculiar American problems; gateways of the Atlantic; the port of New York; rise of the Pacific ports; harbors of the Great Lakes; modern Gulf terminals; evolution of the canal; science of canal building; proposed waterways; Boston to Gulf Canal; and economic considerations.

Cook, Rosamond C. Essentials of sewing. Peoria, Illinois: The Manual Arts Press, 1924. 238 p. illus. 8°. $1.40. VSM (Stack 3)

Discusses "the principles and processes which have to do with the most common operations in all kinds of garment making regardless of style or variation in choice and design, and to leave the selection of proj ects to the discretion of the individual student and teacher." Preface.

Creighton, H. Jermain, and COLIN G. FINK. Principles and applications of electro-chemistry. 2 v. v. 1: Principles, by H. J. Creighton. New York: John Wiley & Sons, Inc., 1924. ix, 446 p. illus. 8°. $4.00. PPO (119)

Reference and text-book, presupposing a working knowledge of elementary physics and physical chemistry. Problems at chapter endings and references to original papers. Author is Associate Professor of Chemistry, Swarthmore College. v. 2, covering applications, by Professor Fink, is in preparation.

Crocker, Francis B., and others. Management of dynamo-electric machinery and industrial controllers, a practical treatise on the operation, care, and maintenance of direct- and alternating current generators and motors, rotary converters, and controllers. Chicago: American Technical Society, 1924. 272 p. illus. 8°. $2.00. VGI (121) Co-authors are C. C. Adams, of the General Electric Co., and G. J. Kirkgasser of the Cutler-Hammer Manufacturing Co. Well diagramed instruction for home use.

Croft, Terrell. Electrical machinery and control diagrams. New York: McGraw-Hill Book Co., 1924. xii, 305 p. illus. 8°. $3.00 VGI (121) "It has been the aim to furnish a collection of 500 odd circuit diagrams, which represents, more or less completely, all of the apparatus which is used in modern electric power practice. No attempt has been made to include electric railway or telephone circuits. Incandescent lighting circuits are fully covered in the author's Lighting circuits and switches." - Preface.

Davis, Watson. The story of copper. New York: The Century Co., 1924. xix, 385 p. illus. 8°. $3.00. VIT (117)

Fascinating account of genesis, distribution, metallurgy, chemistry, alloys, and uses of copper, with a descriptive bibliography.

Drover, F. J. Coal and oil fired boilers. London: Chapman & Hall, Ltd., 1924. xiv, 350 p. illus. 8°. 16s. VFH (121)

Treats of the construction, maintenance, and operation of high-pressure boilers for land and marine purposes. Excellent illustrations. Author is EngineerCommander in the British Navy.

Reviewed in Shipbuilding and shipping record, July 24, 1924; Iron and coal trade review, Aug. 8, 1924. *Dunlop, J. B. The history of the pneumatic tyre. By...the inventor. Dublin: Alex. Thom & Co., 1924. 103 p. illus. 8°. 5s. VMV (121)

Evans, Ulick R. The corrosion of metals. New York and London: Longmans, Green & Co., 1924. xi, 212 p. illus. 8°. $5.00. VIB (117)

Survey of earlier corrosion theories precedes a scientific discussion of present-day knowledge, including a chapter on electro-chemistry. Chapter 11 deals with methods of prevention; and the appendix summarizes the behavior of individual metals to corrosive agencies. Mr. Evans is associated with King's College, Cambridge, England, and is the author of an admirable work: Metals and metallic compounds (4 v., 1923).

Fleming, John Ambrose. The thermionic valve and its development in radio-telegraphy and telephony. London: The Wireless Press, Ltd., 1924. viii, 438 p. 2. ed. rev. illus. 8°. 15s. TTF (121)

"The first edition...appeared in 1921, and the author has now added a considerable amount of matter which puts the reader in touch with the very latest developments... The copious use of figures and diagrams is most commendable... The author is careful to avoid anything in the way of advanced mathematical proofs, and presents the whole subject in a clear and logical manner."— Electrical review, Sept. 5, 1924.

Also reviewed in Nature, Sept. 13, 1924; Wireless world, July 16, 1924.

*Frith, Julius, and F. BUCKINGHAM. Vibration in engineering. London: MacDonald & Evans, 1924. xiv, 123 p. illus. 8°. 7s. 6d. VFG (121)

Deals with the physics and mathematics of vibra tion in machinery. Parts of the text, notably concern. ing whirling shafts and the cyclic irregularity of alternators, are stated to be new. Bibliography of 41 titles.

Reviewed in Engineering production, Sept., 1924.