Books

are analysis of metals, soil extracts, plant tissue ash, geochemical samples, air particulates, and foods, sampling approaches, and factors influencing precision and accuracy.

Continuing Series

Encyclopedia of Electrochemistry of the Elements: Organic Section. Vol. 12. A. J. Bard and H. Lund, Eds. xii + 512 pages. Marcel Dekker, Inc., 270 Madison Ave., New York, N.Y. 10016. 1978. $88

Volume 12 continues the organic section which in four volumes will complete this long-standing series on electrochemistry of the elements. This book contains three review chapters: carbonyl compounds; carboxylic acids, esters, and anhydrides; and organic sulfur compounds. All chapters have sections on electrode potential, vol-tammetric properties, and electro­chemical studies. The chapter on car­boxylic acids, esters, and anhydrides includes a section on applied electro­chemistry. Each section includes ta­bles of available thermodynamic, ki­netic, voltammetric, and other electro­chemical data, and a critical discus­sion on the known electrochemical re­actions. Most of the references do not extend much beyond 1974. The book is reproduced from typewritten text.

U.S. Government Publications

Order copies of the following PRE­PAID at the price shown by SD Cat. No. from Superintendent of Docu­ments, U.S. Government Printing Of­fice, Washington, DC. 20402. Foreign remittances must be in U.S. exchange and include an additional 25% of the publication price to cover mailing costs

Atomic Energy Levels—The Rare-Earth Elements. W. C. Martin, R. Zalu-bas, and L. Hagan. vii + 411 pages. 1978. $9.50. SD Cat. No. C13.48:60

Energy level data are given for 66 atoms and atomic ions of the 15 ele­ments lanthanum (Z = 57) through lu-tetium (Z = 71). Only experimentally determined energy levels are included; energies are restricted to excitations of outer-shell electrons and to inner-shell excitations up to the soft X-ray range. The levels are taken from analyses of the spectra of atomic gases wherever possible; however, the levels for sever­al of the triply ionized rare earths are from analyses of the spectra of the

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