Constitution of Binary Alloys By Dr. Max Hansen. Second edition prepared with the co-operation of Dr. Kurt Anderko. (Metallurgy and Metallurgical Engineering Series.) Pp. xix + 1305. (London: McGraw-Hill Publishing Company, Ltd., 1958.) 252s. Metallurgical Thermochemistry By Dr. O. Kubaschewski and E. Ll. Evans. (International Series of Monographs on Metal Physics and Physical Metallurgy, Vol. 1.) Pp. xiv + 426. (London and New York: Pergamon Press, 1958.) 63s. net. Vacancies and Other Point Defects in Metals and Alloys A Symposium organized by the Institute of Metals and held at the Atomic Energy Research Establishment, Harwell, Berks., on 10 December 1957. (Institute of Metals Monograph and Report Series, No. 23.) Pp. iii + 234 + 16 plates. (London : Institute of Metals, 1958.) 40s.; 6 dollars. Vacuum Metallurgy Lectures presented during the course on Vacuum Metallurgy sponsored by the Department of Metallurgical Engineering in co-operation with the Office of Special Service to Business and Industry, New York University, New York, June 10–14, 1957. (Materials Technology Series.) Pp. xviii + 472. (New York : Reinhold Publishing Corporation; London : Chapman and Hall, Ltd., 1958.) 100s. net. A Dictionary of Metallurgy By Dr. A. D. Merriman. Pp. xv + 401. (London: Macdonald and Evans, Ltd., 1958.) 126s.