Chemists will find much in this volume to make it a valuable acquisition for personal libraries and a necessity for any institutional library which provides authoritative discussions of "the present status" in fast-moving fields.A full chapter is accorded the chemistry of technetium and astatine, which includes information published up through March, 1959.The concise survey of Solvent Extraction, both for analytical and for process purposes, is an admirable example of "Annual Reviews" in its most useful form.The long chapter on Nuclear Fission, by I. Halperin, not only states the known facts and the postulated theories, blit also suggests the fundamental unsolved problems. The same is true, with more emphasis on the latter, in R. F. Post's chapter on Plasma Research.No scientist who thinks about the future civilization in an age of dwindling fossil fuel resources can fail to appreciate having the clear analysis of The Economics of Nuclear Power, by J. A. Lane. His is an optimistic conclusion: power costs in the range 6.3-8.9 mills/kw hr. in the United States are possible by 1970. Biological effects of ionizing radiation receive the emphasis of three chapters: Vertebrate Radiobiology, Cellular Radiobiology, and a collection of treatments of specific topics under the broad heading of Radiation Biochemistry. At the rate work is being done in these areas, mitosis of this series may soon occur to produce a daughter: Annual Reviews of Radiobiology. W. F. K.
Hydrogen BondingEdited by D. Hadzi with the cooperation of H. W. Thompson, Papers presented by the Hydrogen Bonding Symposium, Ljubljana, Yugoslavia, in 1957 under auspices of I. U. P. A. C.
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