BOOK REVIEWS mentioned. The statement that "The number of applications of ion-exchange paper sheets so far reported is not large.. ." (p. 97) is not accurate. And column chromatography is not slower than thin-layer chromatography (p. 171) if suction is employed. Despite these and some other similar minor shortcomings, this is a. valuable, inexpensive, largely-accurate introduction to chromatography for the novice. Each individual technique is adequately and and concisely described, and the chapten are linked so that bhey compare and contrast the various methods. The recipetype model experiments, illust,rat,ing inorganic, organic and biochemical applications, allow a beginner to get started in the laboratory on his own. The chapter on gas ehmmstography is the only one stressing theory. and it is the best introdoction to this topic ever encountered. The new edition would have been impmved had the authors decided to revise and u p d a t e esch chapter. Even so, it is a book which should be tlaed widely by stodents in both secondary schools and universities ss reqrdred reading in courses including the introd~~etion of chromatography or as an aid for individual study.
J ~ S E PSHERMI H I.afagetle College Easlon. Pennsylvania 18042 Thin-Layer Chromatography
Kurt Randeralh, Ilarvard University. Translated by D. D. Libman. 2nd revised and enlarged. Academic Press, Inc., New Ywk, 1966. xiii 285 pp. Figs. and tables. 17.5 X 24.5 cm. 89.50.
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This edit,ion of Dr. Knnderath's hook represents an expansion and updating of the previous one. An attempt has been made to be selective in the use of reference material, emphasis being placed on those sources that give ns*sanahle amount of discussion of experimental technique. The book is written in a clear and concise manner and phobographs and illustrations of good quality are used intelligent,ly throughout. A number of 1964 references are included. The iallawing topics are discussed in the first section of the hook: historical introduction; general technique of thinlayer ehrvmatography (an introdnction to the method); and technique of thinlayer chromatography (e.g., the preparation of layers; sdsohents and other c o a t ing m a t e d s ; methods of d e t e h o n ; qualitative and quantitative methods; thin-layer ehromslography using radioactive isot,opes; t,hiwlayerelect rophoresis; recording ihi~l-layerchromatograms; and preparative thim-layer chromatography). Although this section is wd-executed, oeeasionslly unbalanced treatment of snbjects is encountered. For example, four and a half pages are dedicated t,a "applying the substances," a matter that has heen iha~.oughlyexploited in previous hooks on thin-layer ehrametography, whereas less than two pages are devoted
A912 / Journal o f Chemical Education
BOOK REVIEWS to a rather sketchy discussion of "photometry" (the quantitative messltrement of substances on the plate). The rest. of the book is devoted to "special applications." The following topics sre competently reviewed: alkaktslnids, amines, and other basic compounds; amino acids, amino acid derivatives, peptides, and proteins; steroids; lipids; eamtenoids and chlorophylls; vitamins and biologically active quinones; drugs and poisons; antibiotics and related compounds; phenols and phenolic nstural p~nducts; nwleic acid constituents and nucleotide coenzymes; carbohydrates; insecticides; dyes; miscelIsneous ol.ganic eompoundu; and inorganic ions. This section is well-docw meoted with important references and sho~ddhe useful for workers interested in investigating thin-layer methods for possible application to their particular prohlems. In conclusion, this book should prove to be a valmhle library addition and a rewarding reference for both faculty and stndents.
C . MALINS DONALD U S . Bureau of Commercial Fisheries, Food Science Pioneer Research Labomlory Seallie, Washington
NMR Chemical Shifl Index
Sadtier Research Lahoralories, Ine., Philadelphia, 1Y6i. xvi 92 pp. Tables. 27 X 29.5 em. Looseleaf binding.
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The "NMR Chemical Shift Index" rewrds chen~ieal shift dat,a for over 2000 wmpounds. hleaa~rement,~ were made on aVarian A60A instrument. Act,ually there are three indexes which present, the data in dilferent usehd ways. From the indexes the user can locate spectra. which exhibit the chemical shift characteristics of a certain proton grouping or he can extract a particular chemical shift from an experimental spectrum and deternine the type of proton which can generate such a shift. The solvent in which the chemical shift was observed is also listed. An interesting and useful syst,em of coding the proton groups and their environmentd gmups has been used. The code is s tctoslation from atom symbols to an alpha, numeric code. This code allows the use of computer techniques to arrmge, print, or search the voluminous data. However, computer techniques are not essent,ial. Anyone who is willing to spend a M l e time learning the code can use the index. Although chemical shift data will not give as much information as can be obtained fmm an actoal spectrum, there are many applications where the chemical shill is an important paremeter. For (.hex applications this index can be useful.
JOSEPH D. DANFORTH Grinnell College Grianell, Iowa (Continued n page A914) Volume 44, Number 10, October 1967
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