BOOK
REVIEWS
The Sequertmtion of Metals
Robert L. Smith. The Maomillan Co., 256 pp. Figs. New York, 1959. vii and tables. 16.5 X 25.5 em. $8.50.
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Organic Sequestering Agents
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York, 1959. xv 616 pp. Figs. and tables. 16 X 23.5 cm. $25. 11,mirn>sropy,f r o ohjcctiv~rarrneeded, Iur-p