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V O L U M E 25, NO. 1 0 , O C T O B E R 1 9 5 3 reference numbers rather than pages of the text. Therefoir, it is difficult to use. Part I1 describes the results of the author’s attenipt to apply rhiomatography to some of the steps in the classical qualitative analytical scheme. The preparation and use of the column are described in Chapter 8. The author has used methods discaided by other investigators, such as packing the column dry rather than as a slurry. This result&in very irregularly shaped zones in the chiomatograms. In Chapter 9, the application of chromatographic columns for identification of members of the various groups in a slightly modified vrrsion of the classical qualitative precipitation procedures is described. In groups having only two or three elements, satisfactory quaIitative confiimation of each member of the group was obtained. In the larger groups there appeared to be considerable inter ference. The methods used for chromatography of the calciuni and sodium groups were unsatisfactory. Thorium and scandium could be differentiated from each other and froin the rare earths, but the rare earths could not be separated froin one another. The author lias stated: “The primary objective of this invcstigation was t o obtain chromatographic bands or zones for the various elements . . . and the application here should be considered as only the first step in the application of chromatography to routine qualitative analysis.” The decision t o publish these preliminary results in a book is questionable. It is doubtful if this book Fill be found very useful. To a mail experienced in the field of chromatography, it has little to offer. To those not familiar with this field, it can only give a distorted view of the scope of the field. As a guide to the analytical chemist, it is of questionable value not only because of the preliminary nature of the work described, but also because most analytical problems do not involve the use of the classical qualitative separation vheme in its entirety. 1;r)n \ R I ) I t . TovPhISS
Laboratory Experiments in General Chemistry and Semi-Micro Qualitative Analysis. George Il’ntt and L.0. -\forga?k vii 228 pages. LIcGran-Hill Hook Co., Inc., 330 Wrst 42nd St , SPIV Yolk 36, N. T. Piice, $3.50.
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This voluiiic is a modification of “1,aboiatoq Expeiirii?nts General Chemistry and Qualitative .4nal) sib,’’ by Watt, in that Part T n o povides foi qualitative a n s l ~si? on a semimicro beale. Divided iiito two parts, this ii~aiiualis designed to accompany “Geneial Chemistry,” by Felsing and K a t t , hut is readily adaptable to use with other textbooks. Pait One consists of 49 geneial experimrnts that placr miphasis upon piinciples and upon the quantitative asprcts of the subject. \Vhereverfeasible, detailed directions foi thr assembling of apparatus are supplemented by appropriatelj 1al)elrd diagrams that permit the student to see the necessaiy dctnils rradilv. Report sheets are included for all experiments. Part Two is concerned n ith semimicio qualitative analysis. I t eiiiplols the samc bases foi the separation and identification of ions and places the same emphasis upon principles as did the earlier volume, which described the corresponding macro scale procedures. The laboratory directions are presentrd in discussion form, supplemented in the case of cation sepalation hy both blorh outlinrc :ind flow di:iprams. 111
Standard X-Ray Diffraction Powder Patterns. Vol. I by Howard E. Stcanson and Eleanor Tutge. 95 pages. Vol. I1 by Howard E . Szaunson and Ruth K . Ficyut. 65 pages. National Bureau
of Standards, Circular 539. $0.45 each. Order from Govcrn-
ment Printing Office, Washing$on 25, D. C. Patterns made recently for 84 iiiorg:tnic substances a t the S:itional Bureau of Standards are presented, compared with those which were to be found in the ASTRI file and in the liter:&ture, and recommended for adoption as st,andard patterns. Five patterns, for selenium dioxide, zinc. borate, magnesium tungstate, a-tin, and uranium dioxide, were not represented in the ASTX filr but are compared wibh other patterns in t’he literature. The patterns mere made with a Geiger-couiiter spect,rometer, and samples of except.ioually high purit’y w w used. For each NBS pattern the three strongest lines are givr.11. The lattice constants and densit,!. were calculated, and whcrcwr possildr, thr rrfract.ive indices i r e r e rne:isured.
Chemical Nomenclature latest of the Advances L ~ LChemistry Series,No. 8, “Chemical Nomenelnture,” brings up to date the work that has been done to clarify inorganic, organic, and biological nomenclature by the nomenclature commissions of the International Union of Pure and Applied Chemistry and discusses the basic prohlems of an international chemical nomenclature, devrlopment of chemical symbols, and the role of terminology in indexing, classifying, and coding. The 111-page book is comprised of papers of the Symposium on Chemical Nomenclature given before the ACS Division of Chemical Literature. The symposium covered, in broad range and authoritative manner, the developments and problems of present-day chemical nomenclature. Six different countries ale represented by the 11 authors: Henry Bassett, Geological Survey, Tanganyika; W.Conard Fernelius, Penn State, U. S.; I
