London: T. Fisher Unwin, Ltd., 1926. 251 p. illus. 8°. 10s.6d. V (121)

Provides the layman with an up-to-date account of atoms, salvaging, the sun, seal hunting, radio, modern archæology, sea charting, operation of underground railroads, modern railway marvels, the gyroscope, cable-ships, aeronautics, scenic art, ocean transportation.

Williams, Hal V. The new tinsmith's helper and pattern book... New York: Scientific Book Corporation, 1926. 458 p. 7. ed. illus. 12°. $3.00. VND (121)

Well-illustrated guide to the geometry and construction of sheet metal work, with numerous recipes, formulas, kinks, and tables.

and Woolman, Mary Schenck, E. B. MCGOWAN. Textiles, a handbook for the student and the consumer. New York: The Macmillan Company, 1926. xiv, 572 p. rev. ed. illus. 12°. $3.00.

VL (121)

*

Wykes, A. L. The working of viscose silk. Manchester: John Heywood, Ltd., 1926. 35 p. illus. 12°. 2s. VLNE (121) Physical properties of rayon as determined from some 1500 measurements.

Wynn, A. E. Design and construction of formwork for concrete structures. London: Concrete Publications, Ltd., 1926. xii, 296 p. illus. 8°. 20s. VEOM (121)

Discussion of materials, loads, pressures and stresses is followed by chapters on theoretical designing and the use of tables (of which there are several). Most of the remaining chapters deal with the actual construction of forms for many purposes: walls, flat slabs, sewers and culverts, tanks, silos, bins, standpipes, dams, piers, bridges, and arch falsework. Also describes the use of steel forms.

Reviewed in Engineering news-record, Feb. 17,

1927.

Young, Charles L. Wallpaper and wallpaper hanging. New York: The Century Company, 1926. xiv, 293 p. illus. 8°. $3.50. VEY (121)

A short chapter on the history and manufacture of wallpaper precedes a discussion of the principles of selection. Chapters on tools and materials and how to estimate; the different hanging operations; business suggestions; and the training of apprentices and workers. Contains a glossary and a bibliography. Author is instructor in the William Hood Dunwoody Industrial Institute, Minneapolis, Minnesota.

Aeronautics: All the world's aircraft, 3;

Pritchard, 10; Sherman, 11.

Alternating current rectification: Jolley, 8.
Aluminum: Corson, 5.

Astronomy: Hale, 7; King, 8.

Atoms: Born, 4; Stoner, 11.

Automobiles: Handbuch, 7; Moyer, 9; Pagé,
10.

Balance, Torsion: Eötvös, 6.
Biochemistry: Pryde, 10.
Bricks: Searle, 11.

Bridges: Barman, 3.

Brownian movements: Einstein, 5.
Building: McCullough, 9; Wynn, 13.
Casein: Sutermeister, 12.
Catalysis: Rideal, 10.

Cement and concrete: Hool, 7; Searle, 11.
Chemistry: Bluechers Auskunftsbuch, 4;
Brockman, 4; Friend, 6; Mellor, 9; Por-
ter, 10; Segerblom, 11.
Climate: Brooks, 4.

Colloids: Colloid symposium, 5; Freund-
lich, 6; Ostwald, 10.

Constants, Tables: Kaye, 8; Tables an-
nuelles, 12.

Lecithin: Maclean, 9.
Lubrication: Ettele, 6.

Machine tools: Christensen, 5.
Magnetism: Jeans, 8; Stoner, 11.
Metalcraft: Kronquist, 8.
Metallurgy: Stoughton, 11.

Nitrogen fixation: Waeser, 12.
Oxides, Hydrous: Weiser, 12.
Paints, Analysis: Fox, 6.
Paper pulp: Hoyer, 8.
Patents: Hoar, 7.

Periodicity, Physico-chemical: Hedges, 7.
Petroleum: Gurwitsch, 7.

Phonograph: Gaydon, 6.

Photography: Charles, 5.

Photosynthesis: Spoehr, 11.

Phototelegraphy: Baker, 3.
Physics: Bull, 4; Darrow, 5.
Plastic materials: Fritsch, 6.
Printing: Polk, 10; Selvidge, 11.

Prospecting: Bernewitz, 4; Haddock, 7.
Pumps, Centrifugal: Higgins, 7.

Radio: Gernsback, 7; Gutton, 7; Stone, 11;
Watkins, 12.

Railways: Lamb, 8.

Rayon: Avram, 3; Hottenroth, 8; Suevern,
12; Wykes, 13.

Resins: Barry, 3.

Rotor ship: Flettner, 6.

Rubber: Visser, 12.

Sand, Foundry: Smith, 11.

Sewage: Barlow, 3; Flood, 6.

Ships: Abell, 3; Anderson, 3; Mitchell, 9.

Soil: Russell, 10.

Starch: Rehwald, 10.

Stone: Warnes, 12.

Television: Baker, 3.

Textiles: Woolman, 13.

Tinsmithing: Williams, 13.

Thermodynamics: Nernst, 9; Planck, 10.

Transmission lines: Franklin, 6.

Tungsten: Smithells, 11.

Vacuum, Kaye, 8.

Wallpaper: Young, 13.

Water power: Barrows, 3.

Weather: Humphreys, 8.

X-rays: Compton, 5.