*Special libraries directory, compiled by May Wilson, edited by Rebecca B. Rankin, introduction by John Cotton Dana. New York: Special Libraries Association, 1925. 254 p. 2. ed. 8°. $4.00. Desk (118)

Classifies and characterizes the special libraries of the United States, with geographic, title, personnel, and subject indexes.

Bituminous

Spielmann, Percy Edwin. substances. Scientific progress of practical importance during the last fifteen years. Foreword by J. Kewley. London: Ernest Benn, Limited, 1925. xv, 206 p. illus. 8°. 15s. VHY (117)

For the use of analytical chemists. Describes new laboratory methods for testing, as well as the chemical composition of component parts of the highly complex compounds. Penetration tests by the loaded needle or disc method are given in detail, and standard methods of analysis such as applied to bitumen derived from distillation of crude petroleum are described.

Reviewed in Nature, June 6, 1925; Engineering, June 19, 1925; Journal of physical chemistry, July, 1925.

*Tungay, Sydney J. Acid-resisting metals. London: Ernest Benn, Ltd., 1925. 136 p. illus. 12°. 6s. VID (117)

Brief and simple exposition of high silicon iron, lead and regulus metal, aluminium, stainless steel, monel metal, cast iron and steel, nickel and chromium alloys, copper and copper alloys.

"It is to be hoped that when the next edition is in preparation Mr. Tungay will be more precise in his expressions and endeavour to place before the chemical engineer information of a more definite and accurate kind, and remove the inaccuracies in the latter chapters which make it impossible to recommend the book as a practical guide." - Chemistry and industry, April 24, 1925.

"Apart from minor blemishes...however, the book may be recommended as a useful brief summary.' Engineer (Supplement), Feb. 27, 1925.

Turpin, Edna. Cotton. New York: American Book Co., 1924. vi, 266 p. illus. 12°. $1.00. VLL (121)

Child's book which may be read with profit by his elders. History, cultivation, manufacture, inventions, enemies, and byproducts. Profusely illustrated.

Twelvetrees, W. Noble. Concrete making machinery, including appliances and plant for testing and preparing the constituent materials and for the distribution of mixed concrete. London: Scott, Greenwood & Son; New York: D. Van Nostrand Co., 1925. viii, 180 p. illus. 8°. $3.50. VEO (121)

Brief, dealing principally with British equipment. Reviewed in Engineering world, April, 1925; Engi neering news-record, March 19, 1925; Engineer, Feb. 20, 1925.

*Watson, William. Advanced textile design. London and New York: Longmans, Green & Co., 1925. xii, 467 p. 2. ed. 8°. $7.00.

illus. VLB (121)

Copiously illustrated work dealing with "compound and special cloths in which two or more series of threads are employed in one or both directions, or which are produced in special methods. There is no separate section on colour, but the principles upon which colours are applied to the various classes of cloths are described and illustrated."

Practically the same as the 1st edition (1913), with addition of a section on special madras gauze fabrics. Author is lecturer in the Royal Technical College, Glasgow.

Weinbach, M. P. Principles of transmission in telephony. New York: The Macmillan Co., 1924. xiv, 303 p. 8°. $4.00.

Carpentry: Lowndes, 22.

Ceramics: Franzheim, 21; Noke, 23.

Chemistry: Bogert, 19.

Chemistry (Analytical) Bassett, 19; Knecht, 22; Spielmann, 25.

Chemistry (Colloidal): Freundlich, 21.
Chemistry (Physical): Findlay, 21.

Coal: American Engineering Council, 19.
Coal, Distillation: North, 23.

Concrete machinery: Twelvetrees, 25.
Continents: Wegener, 25.

Cookery: Nesbitt, 23; Peterson, 23.
Cotton: Turpin, 25.

Dictionaries (Technical): Franzheim, 21; Schlomann-Oldenbourg, 24.

Directories: Special Libraries Assn., 25.

Distillation: Elliott, 20.

Drawing (Mechanical): Faber, 20.

Dyes: O'Brien, 23.

Dynamos and motors: Annett, 19; Dudley, 20; Ibbetson, 21.

Electrical engineering: Hazeltine, 21. Electricity (Automotive): Consoliver, 20.

Faraday (Biography): Randell, 24.
Floors and roofs (Reinforced concrete):
Morgan, 23.

Gaging: Dowd, 20.

Geography (Commercial): Chisholm, 20. Glass manufacture: Hodkin, 21.

Hydraulics: Shepperd, 24.

Lighting: Clark, 20; Luckiesh, 22.

Matches: Dixon, 20.

Materials, Resistance: Seely, 24.

Metal turning: Horner, 21.

Metals, Coloring of: Field, 21.
Minerals: Ladoo, 22.

Mixing machinery: Carpenter, 19.
Molybdenum: Gillett, 21.

Oceans: Wegener, 25.

Organic compounds (Synthetic): Schotz, 24.

Petroleum: Stigand, 25.

Pipe standards: National Tube Co., 23. Platinum metals: Smith, 24.

Pressure gauges: Smith, 24.

Probability: Coolidge, 20.
Proteins: Kestner, 21.

Radio: Morse, 23; Robison, 24.

Radio vision: Jenkins, 21.

Railway material, Stability: Marié, 23.

Science: Bragg, 19; Luckiesh, 22.

Scientific and technical papers: Trelease, 25.
Scumbling and glazing: Millar, 23.
Ships: Daniel, 20.

Show-cards: Koller, 22.

Soap manufacture: Martin, 22.
Steamship models: Chatterton, 20.

Superheated steam: Superheat Co., 25.

Telephony: Weinbach, 25.

Textile design: Watson, 25.

Transmission lines: Painton, 23.

Vocational education: Sowers, 24. Wood fires: Robinson, 24.