NOW a "plug-in, finetune, and forget" liquid helium transfer and cooling sgstem.
Books and particularly in the chapters on sym metry, the drawings are of a high stan dard and clearly illustrate the relevant points. Selected problems are given which will be particularly useful for the self-teaching student. No typographical errors have been noticed in the book, although the dust cover adds an order of magnitude to the number of space groups. In any short treatment of a very large subject the most difficult decisions must be on what to leave out. This reviewer would have thought it worthwhile to demonstrate the equivalence of the Laue and Bragg relations, although their identity is clearly stated. In the brief discussion of the phase problem (pp 103-104), the statement " . . . the com plete set of intensities provides enough information so that crystal structures can be solved . . ." is possibly rather strong. The relation of the power of all methods of structure determination to structural singularities might have been summarized here or later. How ever, these are quite minor differences of opinion in a generally excellent treat ment. The book will be extremely use ful to physical chemists and to many other scientists whose interest include the results of X-ray crystallographic studies.
New Books
T h i s Cryo-Tip® r e f r i g e r a t o r n o w makes it possible to transfer liquid helium, cool a sample and control temperature to 0.01 °K with one com pact, easily-installed system. This device has its own micrometer needle valve and heater for precise adjust ment from 2°K to 300°K. Its six-foot flexible line and miniature refriger ator allow quick installation and cooldown in all analytical instru ments. Your sample can be held in any orientation. Cumbersome set-up and filling of research dewars can be forgotten. Get all the detailed facts on Model LT-3-110 for your partic ular application. Air Products and Chemicals, Inc., Advanced Products Department, Allentown, Pa. 18105. Telephone (215] 395-8355.
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Applications of Nuclear Magnetic Reso nance Spectroscopy in Organic Chem istry, 2nd Ed. L. M. Jackman and S. Stern hell, xvi + 456 pages. Pergamon Press, Inc., Maxwell House, Fairview Park, Elmsford, Ν. Υ. 10523. 1969. $11
The original edition of this book has achieved a considerable reputation ow ing to its usefulness for organic chemists who wish to employ nuclear magnetic resonance but who do not wish to make a detailed study of the fundamental principles involved. This book will en able any organic chemist to utilize NMR spectroscopy for the solution of pertinent problems. It is entirely nonmathematical, and it does not assume that the reader has any prior knowledge of the subject. It covers all major and most minor developments up to the end of 1965 although many 1966 references are included. In the sections concerned with applications, chemical shifts and coupling constants have been considered empirically, approximately 50 tables being included for this purpose. This extended and up-to-date volume will prove extremely useful and will be wel comed as a guide to the way in which the organic chemist uses NMR now and in the future.
Circle No. 2 on Readers' Service Card
84 A ·
ANALYTICAL CHEMISTRY, VOL. 42, NO. 1, JANUARY 1970
Classics in Coordination Chemistry: Part 1: The Selected Papers of Al fred Werner. Gerald Holton, General Editor, xiii + 190 pages. Dover Publications, Inc., 180 Varick Street, New York, N. Y. 10014. 1968. Paperbound. $2.50
This first volume of "Classics of Co ordination Chemistry" makes six of Al fred Werner's most significant papers available for the first time in English. These essays provide wide coverage of the most important and fundamental problems in the chemistry of complexes. Werner, the undisputed founder of co ordination chemistry, played such a large and important role in this area of chemistry that his name has become virtually synonymous with the field. His original theory has been verified in almost every particular and his experi mental procedures are still used today. Practicing chemists, historians of science, and specialists in coordination chemistry will welcome this first trans lation for its practical importance as well as for its historical value. The Use of Chemical Literature. 2nd Edition. R. T. Bottle, Editor, xii + 294 pages. Archon Books, 995 Sherman Ave., Hamden, Conn. 06514. 1969. $10
This book marks the formal start of a new series of literature guides entitled "Information Sources for Research and Development" which will be under the editorship of D. J. Foskett and R. T. Bottle. The many changes in the na ture and pattern of the chemical litera ture since 1962 have necessitated an almost complete rewriting of most of the chapters. Only the chapters on Beilstein and on Patents are basically the same. There have been various ad ditions to the chapters which were in the first edition. These topics include: polymer science, spectroscopic data, in terdisciplinary indexes, and chemical prices and suppliers. Several new ex ercises have been added to widen the scope of the practical work which is so essential in any course on chemical literature. These various changes and additions will increase the scope and usefulness of the book. Electron Spin Resonance of Metal Com plexes. Teh Fu Yen, Editor, ix - f 204 pages. Plenum Publishing Corp., 227 West 17th Street, New York, Ν. Υ. 10011. 1969. $17.50
The papers in this book represent the proceedings of a symposium which was concerned with ESR of metal chelates. The texts of these papers are designed to bridge the gap between chemical
