NEW BOOKS compass everything. The coverage of the subject appears ta be very thor ough, even if the authors have not been able "to be critical throughout." This raises the thorny question as to whether a technical book which pro poses not only to inform, but also to teach, should be critical after all. I, for one, think it should. One instance where the authors substituted faith for judgment is their statement on the complete analysis of the proton spec trum of fluorobenzene (p. 901). The spectrum on which *hat analysis is based (25 MHz, mediocre resolution) could hardly yield enough information for the solution of a multiparameter problem like this, because it consists of no more than two irregular skewed peaks with some fine structure. As for timeliness, i: is unfortunate that these two volumes did not appear until February and July 1966, although the period covered ends in late 1963. In NMR where concepts change almost continually, such a gap of over two years diminishes the usefulness of this work. The title of Chapter 8, ''The Analysis of High Resolution Spectra," is a mis nomer. ''The Description of . . ." might have been more appropriate. The fun damentals of the theory and description of spectra are given in great detail, al though they have appeared elsewhere [P.L.Corio, Chem. Rev. 60, 363(1960)] along similar lines. To my taste, too much emphasis is placed on formal presentation especially of systems like AB3 and AB4, which overwhelm the spectroscopist with a thicket of lines. Hardly any guidance is provided on how to hew one's way toward the only two parameters of interest, JAB and 8AJi. The labeling and counting of, and the explicit expressions for, the spectral lines, though valid, are of marginal util ity. On the other hand more might have been said about computer pro grams for the description and simula tion (alas, not for the analysis) of spec tra, which were alreadv widelv avail able in 1963. The tables of line positions and in tensities given in the appendix are somewhat superfluous and, moreover, of little value since the frequencies are not ordered sequentially, but sorted by origin. The bridge between a real spec trum and sorted lines, as presented in the text and the tables, can often be built reliably only with multiple-reso nance methods. Even though this fact is not explicitly mentioned, it was heart ening to find over 25 pages devoted to these methods which have opened unique and wide horizons in the analy sis of NMR spectra. All in all, this work will prove very valuable as a source book and, in part,
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