book reviews The inorganic chemistry of colloidal carbon and graphite is covered in this section. Reactions of graphite are treated in two categories-one, a reaction in which the lattice ir destroyed and gaseous products are formed, and second in which the lattice is maintained, but foreign substances me intercalated between the lattice planes. The extensive review on colloidal chemistry stresses the technique of sdsorption as a tool for research. Coverage of carbon hlsck emphasizes its industrial importance. Carbon black in organic applications is summarized briefly.
Complex and addition compounds having organic ligands are not covered here, but appear in Section 1 or will be covered in Section 4 of Part B. The literature is reviewed through 1964. By far the greater part of the section on mercury and sulfur is devoted to HgS. For HgSe and HgTe the galvo- and thermomagnetic effects are extensively reviewed. The chapter on mercury and carbon starts with a summary which provides references to H p C compounds which have been ~reviouslvcovered. Carbon mates, ox&tes, and tartrates.
JANET B. VANDOREN lems involving gases are treated in 10 College of Woosler Wooster, Ohio
J~NE B.TVAN DOREN College of Wooster Wooster, Ohio Gmelins Handbuch der Anorganisehen Chemie. 8. Auflage, System Nvmmer 34, Quecksilber. Teil B, Lieferung 3, Verbindungen von Quecksilber und Schwefel bir Quecksilber und Kohlenstoff
Edited by E. H. E. Pielsch and the Gmelin Institute. Verlag Chemie, GMBH, Weinheim/Bergstrasse, 1968. xx 346 pp. Figs. and tables. 17.5 X 25.5 cm. $100.50.
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This section of Part B describes compounds of meroury with sulfur, selenium, tellurium, polonium, boron, and carbon.
A286
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Journd o f Chemical Education
is devoted to a clear and concise exposition of the principles of arithmetic, algebra, geometry, and trigonometry. These discussions, occupying some 80 pages, are illustrated by definitions, principles, and carefully worked-out specimen computations. As is to be expected from the title, the bulk of the text is devoted to chemical calculations. There is s. full treatment of chemical formulas, atomic weights, simple and multiple proportions, percentage composition, empirical formulas, and eauations. Seoarzte sections deal with
Rechnen in der Chemie
Walter Wittenberger, Offenbach/Main, West Germany, Erster Teil: Grundoperationen - Stbchiometrie. 7th ed. Springer Verlag, Vienna and New York, 1968. x 330 pp. Figs. and tables. 14 X 20.5cm. $6.75.
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First published in 1947, this very useful hook has undergone revisions and reprinti n g ~every few years, testifying to its accepted popularity. I t is designed for students, teachers, technicians, practitioners, and all who need to be acquainted with the solution of fairly simple numerical problems related to chemical and allied operations. The first portion of the text
pages. The closing sections of the text deal with physical-chemical cdcleulations (e.g., o ~ t i c a l rotation. viscositv, " , electrolvsis. " , mass action effects, determinstion of atomic and molecolar weights, thermachemistry). Finally come ehernicd ttchnieal camputations (calorific values, heat production, water softening, metallurgic calculations, ceramic computations). A prime feature of the book is the inclusion of 273 solved, practice problems and more than 1400 problems far which the solutions are given in a separate section. This modestly priced book is recommended without reservation. It should help stw dents learn both chemistry and German. RALPHE. ORSPER Universit~lof Cincinnati Cincinnati, Ohio
