systems, mechanical interlocking, power interlocking plants, primary and storage batteries and relays. Methods of operating trains by signal indication are fully explained and there is an excellent chapter on essential signal indicators. Published under the direction of the Brotherhood of Railroad Signalmen of America. Eco *Waddell, John Alexander Low. nomics of bridgework. A sequel to Bridge engineering. New York: John Wiley & Sons, Inc., 1921. xxxii, 512 p. illus. 8°. $6.00. VEK (121) The general principles of economics are presented, and comparisons made of the relative advantages of bridges and tunnels, of high and low level crossings, of steel and reinforced concrete structures, of dif ferent types of ordinary steel structures, of riveted and pin-connected bridges, of continuous and noncontinuous trusses, of the simple truss and cantilever bridges, of cantilever and suspension bridges, etc. "The chapters on inspection, shopwork, erection, and maintenance and repair are well worth while and will give the young engineer a large amount of valuable practical information. The chapter on military bridges is timely, and the thanks of the profession are due to Gen. Beach and to Col. Bond for its preparation... Should be read by engineers connected, with the design and construction of bridges not because any will necessarily agree with the findings in all respects but as a stimulus to the serious consideration of what constitutes the real economics of bridgework... The range of the author's investigations is remarkable." Charles E. Fowler in Engi neering news-record, Aug. 18, 1921. Also reviewed in Times engineering supplement, London, August, 1921. *Walker, Miles. The diagnosing of troubles in electrical machines. New York and London: Longmans, Green & Co., 1921. xi, 450 p. 8°. $10.50. VGI (121) Author, who is professor of electrical engineering in the University of Manchester, bases his work upon 30 years of experience. It is stated that "one can only hope to deal with a small percentage of the troubles and to indicate the general methods of attacking problems of this kind." Contents are classified under: breakdown of insulation; overheating; low efficiency; vector diagrams; alternating- and direct-current generators; sparking; direct current motors; synchronous converters; induction motors; and the use of the oscillograph in commercial testing. Extensively and carefully diagrammed. *Watson, William. Textile design and colour, elementary weaves and figured fabrics. New York: Longmans, Green & Co., 1921. xi, 436 p. illus. 2. ed. 8°. $7.00. VLB (121) First edition (1912) and the author's Advanced textile design (1913) are standard works. Despite the sub-title of the present volume the treatment is anything but elementary, having been designed "for textile designers and manufacturers, as apart from students in elementary classes at technical schools."' Deals with the construction and combination of simple and special weaves, the structure of standard classes of cloths, the theories of color, the application of colors to fabrics, and the designing of ordinary figured fabrics. Completely illustrated. The appendix of 75 pages is new, comprising a list of standard yarns, weaves and fabrics, and dealing "chiefly with examples which possess some special feature as regards either structure or method of manufacture." *Whitaker, J. W. Mining physics and chemistry... with an introduction by Professor W. H. McMillan. New York: Longmans, Green & Co., 1921. xii, 268 p. illus. 8°. $3.00. VHW (117) An elementary book for coal miners, managers, and owners, intended to give basic knowledge with which to meet the various problems of safety and of economical production. Part 1 deals with physical laws and instruments; part 2 with the laws of chemistry, the nature of common substances, the atmosphere, combustion and oxidation, mine gases, surface and mine waters, and explosives, concluding with a chapter on coal. Author is a lecturer in the mining department of University College, Nottingham, England. Reviewed in Iron and coal trades review, Oct. 7, 1921; Engineering world, Nov., 1921; Chemical age, London, Nov. 19, 1921. *Whitmore, Frank C. Organic compounds New York: The Chemical of mercury. Catalog Company, Inc., 1921. 397 p. 8°. POD (118) Gives brief historical outline, traces general methods of preparation, and describes properties and reactions, with special chapters on the more important derivatives. Appendix gives analyses, list of proprietary mercurials, extensive bibliographies, and lists of patents. Williams, John H. Yosemite and its high Sierra. San Francisco: John H. Williams, 1921. 194 p. illus. 2. ed. rev. & enl. 4°. $3.00. PSK (120) Second edition, revised and greatly enlarged, of a beautifully illustrated work, written for the purpose of introducing this remarkable mountain playground to the public. The beauties of the cañon of the Yosemite, the Tuolumne Grand Cañon and Hetch Hetchy are described in detail. A chapter on California sky-line gives interesting experiences in mountain climbing, both in summer and in winter, and the final chapter is given over to the famous big trees, peculiar to this section. In the supplement is valuable information for the tourist on roads, trails, brief excursions, Yosemite literature and similar subjects. A book which will give Wanderlust to the reader. Willoughby, George A. Practical electricity for beginners. Peoria, Ill.: Manual Arts Press [cop. 1921]. 104 p. illus. 8°. $1.00. VGC (121) Fundamentals set forth briefly in simple language and with numerous illustrations. In addition to general principles there are chapters on battery-lighting circuits, fuses, heater-circuit troubles, incandescent lamps, measurements, and the avoidance of danger. Author is shop supervisor in the Arthur Hill Trade School, Saginaw, Michigan. Woodhouse, T., and P. KILGOUR. The jute industry from seed to finished cloth. New York: Sir Isaac Pitman & Sons, 1921. x, 133 p. illus. 12°. (Pitman's common commodities and industries series.). $1.00. VLR (121) *Worden, Edward Chauncey. Technology of the cellulose esters. A theoretical and practical treatise on the origin, history, chemistry, manufacture, technical application and analysis of the products of acylation and alkylation of normal and modified cellulose, including nitrocellulose, celluloid, pyroxylin, collodion, celloidin, guncotton, acetylcellulose and viscose, as applied to technology, pharmacy, microscopy, medicine, photography, and the warlike and peaceful arts. v. 1 in 5 parts. [New York: D. Van Nostrand Co., 1921.1 8°. $40.00. VOF (118) A projected "monumental" work of 10 volumes. Owing to the sudden prominence of the cellulose acetates during the war, v. 8 was published in 1916. Now appears v. 1, comprising five sizable books, covering respectively: cellulose, starch, and cotton; nitric and sulphuric acids; nitrocellulose; the historical development of the cellulose ester industries; and name, subject, and patent indices, "The magnitude and scope of this colossal work has prompted an American contemporary to apply to it the apt description of a 'Cellulose ester's Beilstein'.. On second thoughts it may be doubted whether the comparison with Beilstein does sufficient justice. As a matter of fact there are two books running concurrently in this work, one the largeprint descriptive text and the other the small-print footnotes and references. The work is not merely an encyclopedia, such as could be strung together by a committee of card-index experts, but displays a unity of purpose and correlation of ideas which reveal the author as the creative spirit behind the formidable array of printed facts." J. F. Briggs in Journal of the Society of Chemical Industry, Sept. 30, 1921. Also reviewed in Nature, Oct. 27, 1921; Chemical trade journal, Aug. 13, 1921; Chemical age, New York, June, 1921. AUTOMOBILE: Bayston, 43; Moreton, 48; Ros- BATTERIES (Storage): Crocker, 44. BEARINGS: Bearings and bearing metals, 48. BIOCHEMISTRY: Moore, 48. BLEACHING: Higgins, 47; Matthews, 48. BRIDGES: Waddell, 52. BROACHING: Hammond, 48. BUILDING: Arthur, 43; Baxter, 44; Cosgrove, CELLULOSE: Worden, 53. CHEMISTRY: Adams, 43; Farmer, 49; Fischer, 45; Hale, 46; Moureu, 49; Society, 51; COLORIMETRY: Snell, 51. CONCRETE Baxter, 44; Hool, 47. CONVEYING MACHINERY: Material, 48; Wood- COTTON SPINNING: Wade, 52. ELECTRIC FURNACE: Escard, 45; Moffett, 49. 45; Marshall, 49; Moffett, 49; Salomons, ESTIMATING: Arthur, 43. FLOTATION: Rickard, 49. FOOD: Eddy, 45. FORGING: Bower, 44. GEOLOGY: Grabau, 46. GLASS: Bolas, 44. HEAT: Royds, 50. HIGHWAY ENGINEERING: Chatburn, 44. HOSPITALS: Stevens, 51. HYDROGEN: Taylor, 51. INVENTIONS: Fiske, 45. JUTE: Woodhouse, 52. KNITTED GOODS: Buck, 44. LOCOMOTIVE CONSTRUCTION: Ahrons, 49. MACHINE TOOLS: Jones, 47. MAPS: Elles, 45. MARINE BOILERS: Allen, 43. MECHANICAL DRAWING: Rouillion, 50. MERCURY: Whitmore, 52. METALLURGY: Austin, 43. METEOROLOGY: Geddes, 45. MICROSCOPY: Coles, 44. MINING: Whitaker, 52. PHOTOGRAPHY: Martin, 48; Photo Pictorials, POWER: Gilbert, 46. RADIOACTIVITY: Chadwick, 49; Lind, 47. SCIENCE: Singer, 50. SEWERAGE: Whyatt, 49. SHEET METAL WORK: Hopp, 47. SHOP TRAINING: Oberg, 48. SOAPS: Fischer, 45. STEAM BOILERS: Clayton, 49. TANNING: Harvey, 46. TELEGRAPHY (Wireless): Batcher, 43; Scott- TEXTILE DESIGN: Watson, 52. Toys: Makinson, 48. TRIANGLES: Oberg, 48. TURBINES: Grant, 46. VALVES: Ahrons, 49. WOOD-TURNING: Klenke, 47. WOOL MANUFACTURE: Lipson, 47. YOSEMITE NATIONAL PARK: Williams, 52. |