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A versatile
medium-priced mass spectrometer for $33,900
theory of continuous linear and non linear systems, of discrete, optimal, and self-adjusting systems, as well as with the theory of statistical methods of in vestigations, and of structure and signal composition. The theories relating to special mathematical problems, simula tion and experimental methods, and of terminology and education are dis cussed. Volume III treats components: elec tric and magnetic components; electri cal simulation, computing components and governors; components and sys tems for remote and supervisory con trol; pneumatic components and com puting devices; and automatic control instruments and devices. Volume IV is concerned with appli cations of automation in metal work ing, electrical power systems, electrical drives and machines, transport, indus trial processes, chemical and oil indus tries, metallurgical processes, and auto matic control of thermal and nuclear power. These papers answer many questions concerning the type and quantity of in formation necessary to achieve auto matic control in a plant or system. A new computation method for solving the classical Wiener filtering and pre diction problem is also given. Critical reviews of these books are scheduled to appear in future issues of ANALYTICAL CHEMISTRY. Molecular Spectroscopy. Methods and Applications in Chemistry.
O. H. Beaven, E. A. Johnson, H. A. Willis, and R. G. J. Miller, viii + 336 pages. Macmillan Co., 60 Fifth Ave., New York 11, Ν. Υ. 1962. $12.50. For accuracy, sensitivity, and resolving power CEC's new 21-130 Mass Spectrometer is superior to any other in its price r a n g e . . . and equals within its mass range the performance of t h e largest $60,000 instrument. Specifically designed for laboratory use, it has such high-performance features built in as a micromanometer a n d a 5-galvanometer, directwriting oscillograph, plus a stainless steel inlet system. And yet, its price is $33,900. H o w is this possible? Credit CEC's 25 years of mass spectrometer experience for effecting the economies. And, for more information, call your nearby C E C sales and service office today, or write for Bulletin C E C 2 1 1 3 0 - X 1 2 .
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ANALYTICAL CHEMISTRY
Comprehensive Analytical Chemistry. Vol. 1C. Classical Analysis. Cecil L. Wilson, David W. Wilson, editors, xxx + 728 pages. D. Van Nostrand Co., Inc., 120 Alexander St., Prince ton, N. J. 1961. $24. Fluorescence Assay in Biology and Medicine. Sidney Udenfriend. χ + 505 pages. Academic Press, Inc., Ill Fifth Ave., New York 3, N. Y. 1962.
$U. A Textbook of Quantitative Inorganic Analysis. 3rd ed. Arthur I. Vogel. xxx + 1216 pages. John Wiley & Sons, Inc., 440 Park Ave., South, New York 16, Ν. Υ. 1962. $12. Progress in Nuclear Energy. Series IX, Analytical Chemistry, Vol. 2.
Carl E. Crouthamel, editor, vii + 400 pages. Pergamon Press, Ltd., Headington Hill Hall, Oxford, Eng land. 1961. $15.
