1110
BOOKS RECEIVED
the scientific tools and methods wed and of the reaults of the more important branches of research on coal. Although no critical commenta by the editor are included, the benefit of his appraisal is inherent in the selection and arrangement of the articles. There are only a few typographical errors. Perhaps the most aeriow one occum in article No. 15 on Coal Petrology by C. A. Seyler. On pages 257 and 288, the equation RO 0.28 X l . W R should have been written Ra = 0.23 X (1.363)NR.This article by C. A. Seyler is also the moat difficult for the reader to understand and evaluate. The method of presentation of data in Figure 2 is difficult to comprehend, and the reader ie not informed that repeated efforts by competent coal petrographers to duplicate Peyler’s work have not shown the existence of nine components of separate and distinct reflectivity. All of the articles present an excellent selection of references to original sources of data; and for thoae desiring a very brief, readable account of coal reaearch this book is highly recommended.
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H.H.STOROH.
BOOKS RECEIVED (to June 11, 1951) Amrds, ROQER(Editor). Organic Reactions. Vol. VI. John Wiley and Sons, Inc., 440 Fourth Ave., New York 16.1951.517 pp. Price: $8.00. AMIDEN, JOHN P. Physical Chemistry for Premedical Studenb. McGraw-Hill Book Company, Inc., 330 West 42nd St., New York 18. 1950.317 pp. Price: $4.25. BUBQER,ALFRED. Medicinal Chemistry. Interscience Publishers, Inc., 215 Fourth Ave., New York 3. 1951.577 pp. Price: $10.00. EITEL,’WILHEL~~. Silicate Melt Equilibria. Rutgera University Press, New Brunswick, New Jersey. 1951. 159 pp. Price: $5.00. F~RSTER, THEODOR. Fluoreszenr organischer Verbindungen. Vandenhoeck & Ruprecht Verlagabuchhandlung, Gottingen, Germany. 1951. 312 pp. price: unbound, 29.50 DM; bound, 32.50 DM. FULDA, WILHELM, AND GINSBERQ, HANS.Tonerde und Aluminium. WalterdeGruyter & Co., Berlin, Germany. 1951. 228 pp. Price: 26 DM. HARROW,BENJAMIN, AND APFELBAUM,PERCY M. An Introduction to Organic chemistry. John Wiley and Sons,Inc., 440 Fourth Ave., New York 16.1951.480pp. Price: $5.00. NORD,F. F. (Editor). Advances i n Enzymology. Vol. XI. Interscience Publishers, Inc., 215 Fourth Ave., New York 3. 1951.471 pp. Price: $9.00. RICCI,JOHN E. The Phase Rule and Hetwogeneom Equilibrium. D. Van Nostrand Company, Inc., 250 Fourth Ave., New York 3.1951.505 pp. Price: $12.00. SCHWENCK, J. R., AND MARTIN,R. M. Basic Organic Chemistry. The Blakiston Company, 1012 Walnut St., Philadelphia 5. 1951.323 pp. Price: $4.50. SPRINQ, K. H.Photona and Electrons. John Wiley and Sons, Inc., 440 Fourth Ave., New York 16. 1950. 108 pp. Price: $1.75. STOOPS,R. (Editor). Le meeanisme de l’ozydation. HuitiBme Conseil de Chimie. 76-78 Condenberg, Brussels, Belgium. 1950.603 pp. Price: stitched, 500 Belgian francs; bound, 550 Belgian francs. STORCH, H. H., GOLOMBIC, N. S. A N D ANDERSON,R. B. The Fischer-Tropsch and Related Syntheses. John Wiley and Sons, Inc., 440 Fourth Ave., New York 16. 1951. 610 pp. Price: $9.00. SUTER, C. M. (Editor-in-Chief).Medicinal Chemistry. John Wiley and Sons, Inc., 440 Fourth Ave., New York 16. 1951.473pp. Price: $12.00. WAHLSTROM, ERNEST E . Optical Crystallography. 2nd ,edition. John Wiley and Sons, Inc., 440 Fourth Ave., New York 16.1951.247pp. Price: $4.50. WERTaerM, E. Teztbook of Organic Chemistry. 3rd edition. The Blakiston Company, 1012 Walnut St., Philadelphia 5.1951.958pp. Price: $5.00.
