book reviews material, hut their textbook is another matter. The typeface is difficult to read. The hook needs some references to open other viewpoints far the student and to enrich the material presented. In summary, this book may be of value as a reference or for selected supplementary reading. As a textbook it does not deserve high marks. John J. Lucier. S.M. University a1 Dayton Dayton. Ohio
The Aldrich Library of NMR Spectra Volume IV
Charles J. Pouehert and J o h n R. Campbell. Aldrich Chemical Co.. Inc., Milwaukee, Wisconsin, 1974. ix + 167 pp. Figs. 22.7 X 30.5 cm. $15.00 (Pre-publication subscription price far 11 volumes, $115.00) Paperbound. This is the first volume of a projected series of ten plus index, the completed "library" to be a eampilation of 60 MHz nmr spectra (recorded on a PE Hitachi R-24 in^ strument with 0.6 Hz resolution) of a large number of common substances of many chemical classes. Each volume will consist of a few related types of compounds with 7.2 x 11.2 em spectra arranged four to a page in order of increasing complexity, and thus quite similar in plan to the "Aldrich Library of Infrared Spectra." (The nmr spectra are about twice as large a s the ir spectra, however, and thus the" are
A266 1 Journal of Chemical Education
very clear and easy to read.) Volume IV contains 142 aromatic hydrocarbons, 183 aromatic halides, 103 aromatic ethers, and 174 phenols. The Table of Contents subdivides each of these groups into smaller categories; e.g., for aromatic hydrocarbons into alkyl substituted, alkenyl substituted, non-fused multiple ring and fused multiple ring. An uncramped large-type alphabetical index and a molecular formula index complete the volume. Besides serving as a useful index to several thousand nmr spectra of the most common compounds, this compilation appears to have a similar educational utility to that of the Aldrich Company's infrared library: Spectra of related compounds can be rapidly compared and recompared by flipping just a few p a p s to see changes in spectra accompanying altered substitution, ring size, eleetronegativity, dihedral angle change, etc. I think that this is a n unusually useful collection of data a t a modest price. In my opinion, the educational value is decreased by the authors' decision not to include data (or at least integration curves) for the areas under the absorption peaks. They have stated that this omission was to keep costs down so that individuals could afford to buy one or more volumes of the series. This was also the reason for issuing the series in paperback. Libraries may want to casebind the eleven paperbound volumes into three: Xon-aromatics. Aromatics, and Heterocycles plus Miscellaneous. Frank L. Lambert Occidentai Coiiege Los Anqeies. Califoroia 90041
