*Stoddard, Dwight L. The steel square pocket book, a practical and handy treatise giving the best methods of using the carpenter's steel square. New York: U. P. C. Book Co., 1925. 172 p. 3. ed., rev. & enl. illus. 12°. $1.00. VEN (121)

First edition published about 20 years ago. Covers problems of roofing, towers, stairs, siding and shingling, and methods of calculation.

Strouse, C. R., and O. A. WITTE. Starting and lighting of automobiles. Scranton, Pa.: International Textbook Co., 1924. vii, 51, 55, 69, 48, 52, 63, 60, 42, 42 p. illus. 8°. (International library of technology. 367B.) $3.50. TON (121)

Clear descriptions and good diagrams of up-to-date equipment.

Swain, George Fillmore. Structural engineering. (V. 2: Fundamental properties of materials. New York: McGrawHill Book Co., Inc., 1924. vi, 200 p. illus. 8°. $2.50. VEE (121)

For notice of v. 1 (Strength of materials), see New technical books, v. 9, no. 4, 1924, p. 59.

"The constitution and physical structure of the principal materials important to the practicing engineer are discussed from the viewpoint of the engineer... Describes the importance and effect of various ingredients, the effect of different treatments, and the significance of the specifications used to secure desired properties in... wood, iron and steel, cast iron, wrought iron, alloy steels, non-ferrous metals and alloys, stone, brick and other clay products and calcareous cements and concrete... A chapter on corrosion of metals. . .' Concrete, Jan., 1925.

Also reviewed in Boston Society of Civil Engineers, Journal, Jan., 1925; Engineering world, Feb., 1925.

Tammann, Gustav. A text book of metallography. Chemistry and physics of the metals and their alloys, translated from the 3d German ed. by R. S. Dean and L. G. Swenson. New York: The Chemical Catalog Co., 1925. 388 p. illus. 8°. $6.00. VIB (117)

"Professor Tammann's laboratory has made more contributions to systematic metallography than any other group of investigators, and on the basis of these experiments, he has evolved a system of metallographic theory which is distinct from that of any other school of metallurgists... The book is, therefore, unique in its method of treatment and in much of its material." - Preface.

Reviewed in Foundry, March 15, 1925; Iron trade review, March 26, 1925.

Taylor, William T., and R. E. NEALE. Electrical design of overhead power transmission lines, a systematic treatment of technical and commercial factors; with special reference to pressures up to 60,000 volts, and distances up to 100 miles. London: Chapman & Hall, Ltd., 1924. vii, 266 p. illus. 8°. 21s.

VGM (121)

No mathematics required beyond simple trigonom etry. The formulas and calculations are directly applicable to practical design and do not present analyses based on abstract circuits with purely symbolic magnitudes. Discusses transmission systems and circuit relations, standard data for conductor materials, general formulas for area and weight of conductors, power

factor and correction, alternate designs, impedance and power loss, weight and cost of conductors, design of lines for minimum cost, and comparison of transmission systems.

"The engineer...has the choice, in nearly all the calculations, between formulae and graphical solutions." Electrical review, Dec. 26, 1924.

Also reviewed in Electricity, Nov. 28, 1924; Engi neer, Jan. 16, 1925; Nature, April 11, 1925.

Thompson, Maurice de Kay. Theoretical and applied electrochemistry. New York: The Macmillan Co., 1925. xviii, 551 p. rev. ed. illus. 8°. $4.50. VIK (117)

Practically a new book, with 222 pages more than the first edition (1911), which dealt largely with the practical side of the subject. Now includes "all the theory that would be of interest to an electrochemical engineer, without expanding the work to excessive length." Has chapters on the storage battery, electric furnaces, fixation of atmospheric nitrogen, and the production of ozone. Author is Associate Professor of Electrochemistry in the Massachusetts Institute of Technology.

Reviewed in Journal of the Franklin Institute, April, 1925.

*Turneaure, F. E., and H. L. RUSSELL. Public water supplies, requirements, resources, and the construction of works... New York: John Wiley & Sons, Inc., 1924. xvi, 766 p. 3. ed. rev. illus. 8°. $6.00. VDL (121)

Complete revision and resetting of this well-known authority, the 2d edition of which was published in 1908. Latest information is considered, with emphasis on consumption of water, stream flow, filtration, chlorination, the quality of water supplies, reinforced concrete in works construction, and pumping machinery. The literature lists have been revised and brought up to date.

Underhill, Charles R. Magnets, a practical treatise on electromagnetic devices, their circuits, and the specific forms and characteristics of electromagnets and permanent magnets employed. New York: McGraw-Hill Book Co., Inc., 1924. xiii, 468 p. illus. 8°. $4.00. PGT (121)

Considers the materials composing the structures of magnets, the relative physical dimensions of the various parts, and the phenomena associated with them. Equations are sparingly used. Mr. Underhill is the author of a widely known work Solenoids, 2. ed., 1914. Reviewed in Power, Dec. 28, 1924; Electricity, April 10, 1925.

ration.

Vanderwalker, F. N. Interior wall decoPractical working methods for plain and decorative finishes, new and standard treatments. The new artistic and the novelty finishes; color stippling; glaze colors, Tiffany blending and mottling; spatter work; plaster staining; sand float; sponge-stipple; Spanish palm finish; Roman travertine; old English; Holland; French Caen stone; Italian plaster and other artistic rough textures; decorative wall panels. Plain painting jobs and calcimining methods; preparing the surfaces; hanging wall fabrics. Chicago: Frederick J. Drake & Co., 1924. 451 p. illus. 12°. $4.00. VEY (121)

Varner, William R. Varner's manual of automobile electrical tests. Portland, Oregon: The Arcady Co., 1924. viii, 232 p. illus. 12°. $2.50. TON (121)

66 well-illustrated tests of starting, ignition, charg ing, and lighting currents, with chapters on storage batteries, armature rewinding, and motor car efficiency. Author is instructor in the Oregon Institute of Technology.

Vasiliev, A. V. Space, time, motion, an historical introduction to the general theory of relativity, translated from the Russian by H. M. Lucas and C. P. Sanger, with an introduction by Bertrand Russell. London: Chatto and Windus; New York: Alfred A. Knopf, 1924. xxiii, 232 p. 12°. $2.50. PAT (117)

Rather heavy for the general reader. "The philosophy underlying the theory of relativity is only in part modern, and this book enables the reader to see its roots in the past.". Introduction.

Walker, Miles. The control of the speed and power factor of induction motors. New York: D. Van Nostrand Co., 1924. 151 p. illus. 4°. $6.00. VGI (121)

The characteristics of the induction motor are deduced from the circle diagram, which is fully explained. Has chapters on ship propulsion, the Hunt motor, and the phase advancer. Good diagrams and illustrations. Author is Professor of Electrical Engineering in the University of Manchester, England.

*Wall, William E. Graining, ancient and modern. Somerville, Mass.: The Author, 1924. xii, 143 p. illus. 2. ed., rev. & enl. 4°. VEY (121)

Revision of a work published in 1905. Has several new illustrations and additions to the text. Attractive plates in color.

Ward, H. Pilkington. Drawing office practice for electrical and mechanical engineers, draughtsmen and students. London and New York: Sir Isaac Pitman & Sons, 1924. vii, 148 p. illus. 8°. $2.25.

VFE (121)

Treats of office arrangement and furniture, drawing appliances, routine, system, filing, indexing, drawing procedure and conventions, arrangement and types of drawings, tracings, checking, and the preparation of blue-prints. Not a textbook of machine drawing.

Reviewed in Mechanical world, Feb. 27, 1925; Marine engineer and motorship builder, Jan., 1925.

Waring-Brown, R. Friction clutches, a handbook for mechanical engineers, automobile engineers, designers and students. London and New York: Sir Isaac Pitman & Sons, Ltd., 1924. viii, 124 p. illus. 12°. $1.50. VFG (121)

Concise and well-illustrated account of principles involved in design and operation. Discusses the newer friction materials; recent devices; and shows application of friction clutches to many types of machinery.

Webb, W. L., and W. H. GIBSON. Concrete and reinforced concrete; a condensed practical treatise on the problems of con

crete construction, including cement mixtures, tests, beam and slab design, construction work, retaining walls, etc. Chicago: American Technical Society, 1924. 240 p. illus. 12°. $2.00. VEOM (121)

Pocket-sized authoritative book with numerous illustrations and calculations. Chapters on piles, culverts, girder bridges, building blocks, fence posts, silos, and walks.

*Wells, H. Gideon. The chemical aspects of immunity. New York: Chemical Catalog Co., 1925. 254 p. 8°. $4.00. QDS

Considers the subject from the standpoint of biology and colloid chemistry rather than from that of medicine. Extensive bibliographies at chapter endings. Author is Professor of Pathology, University of Chicago.

"No one can expect that from data so derived, in a new science in which the contributions of to-morrow contradict many of those of yesterday, any clear picture or final statement can be presented. At most, one can consider as much of the evidence as he can digest, present as much as seems necessary to carry the thread of the argument, and hope to convey a fair and impartial impression of how the matter stands now and in what direction the subject appears to be moving." Preface.

Pattern-making. Wilson, John McC. London: Constable & Company, Ltd., 1924. x, 140 p. illus. 12°. 3s. 6d. VFE (121)

A brief, concise account of timber and its behavior, of the tools and their uses, of the elementary constructions that concern all classes of patterns and core boxes, with examples of patterns of typical kinds gear wheels, chilled work, ornamental columns, cylindrical work generally, skeleton patterns, and swept-upwork. 100 illustrations.

Reviewed in Metal industry (British), Jan. 16,

1925.

Aeronautics: Robertson, 9.
Alloys: Ledebur, 7.
Astrophysics: Dingle, 5.

Atoms: Smith, 9.

Automobiles:

Blanchard, 3; Butler, 4;

Strouse, 10; Varner, 11; Willoughby,
11.

Bricklaying: Briggs, 3.

Capillarity: Bouasse, 3.

Cellulose: Hall, 6.

Chemical Analysis: Pregl, 9.

Chemical Dictionary: Chemical, 4.

Chemistry: Findlay, 5; Howe, 6; Stillman,
9.

Climate: Huntington, 7.

Clutches: Waring-Brown, 11.

Commodities: Osborne, 8.
Concrete: Webb, 11.

Copper: Hofman, 6.

Crushing and Grinding: Seymour, 9.

Crystals: Rinne, 9.

Drawing: Matasek, 8; Ward, 11.

Eclipses: Lewis, 8.

Electric cables: Del Mar, 4.

Electric Arc: Hagenbach, 5.

Electric Wiring: Schuhler, 9.

Electrical Measurement: Drysdale, 5.
Electrical Transmission: Taylor, 10.
Electricity: Annett, 3; Cotton, 4; Croft, 4;
Gibson, 5; Hausmann, 6; Walker, 11.
Electrochemistry: Thompson, 10.

Electrons: Millikan, 8.

Engineering: Hawks, 6; Lewis, 8.

Engines (Internal Combustion): Judge, 7.

Gasoline: Burrell, 4.

Gauges: Burn, 4.

Geology: Lobeck, 8.

Graining: Wall, 11.

Graphic Methods: Lobeck, 8.

Immunity: Wells, 11.

Interior Wall Decoration: Vanderwalker,

10.

Ions: Crowther, 4.

Iron and Steel: Dencer, 5; Skelton, 9.

Lakes: Hinton, 6.

Leather: Borgman, 3.

Lighting: Cady, 4.

Locomotives: Baldwin, 3; Fry, 5.

Magnets: Underhill, 10.

Materials: Johnson, 7; Swain, 10.

Mechanics: Maurer, 8.

Metallography: Tammann, 10.

Metals: Gough, 5.

Mining: Williams, 11.

Model-making: Modelmaker, 8.

Motor-boating: Horenburger, 6.

Nitrogen Ring Compounds: Hollins, 6.
Optics: Helmholtz, 6.

Paper: Joint Executive Committee, 7.
Pattern-making: Wilson, 11.

Physics: Berliner, 3; Wetham, 11.

Plastic Compositions: Bluecher, 3.

Portland Cement: Davis, 4; Lesley, 7.
Radio: James, 7.

Radiology: Lane, 7.

Refrigeration: Ostertag, 8.

Relativity: Silberstein, 9; Vasiliev, 11.

Rivers: Hinton, 6.

Science in Industry: Farnham, 5.
Screening and Grading: Lister, 8.
Sewerage: Babbitt, 3.

Ships: Anthony, 3; Grant, 5.

Stationary Engineering: Stationary engi-
neers' blue book, 9.
Steam-boiler: Kidwell, 7.

Steel Square: Stoddard, 10.

Sulphuric Acid: Parrish, 9.

Textile Printing: Knecht, 7.

Tides: Bouasse, 3.

Water Supply: Pollitt, 9; Turneaure, 10.

Waves: Bouasse, 3.

Weaving: Nisbet, 8.

Wood-finishing: Jeffrey, 7.