O~cnrrrcREAGENTS USEDIN Q U A ~ ~ ~ ~ A INORGANIC T I V E ANALYsrs. W. Prodinger, Ph.D. Translated by S.Holmes from the second German edition. First Edition. Nordemann Pnblishing Co , Inc., New York City, 1940. xiv 203 pp. 4 Iigs. 15 X 23 cm. $5.00. The author's stated purpose in writing this hook is to survey the mast important organic precipitants with the view of collecting and interpreting them in such a manner that they can be used and developed hy the practical analyst. Because the already voluminous and rapidly increasing literature of organic precipitants is widely scattered, with much of it in foreign journals, and often is not directly applicable to analytical problems, a book of this type fills a real need. The reviewer feels that the author has largely accomplished his purpose; this is attested by the fact that a second German edition followed the f i s t in less than two years. The translator has remedied a deficiency in the German text by including sections on Oxine and Neocupferron. The first few pages of the book deal briefly with the pertinent theory of the analytically important types of complex compounds. The next twenty pages contain discussion of the theory and general applications of same seventeen typical organic precipitants. The remainder of the hook gives detailed directions for the use of some twentv-five oreanic nrecinitauts for ouantitative seoara. . lions and dc.termina&s on a macro and, ;.hen practicabir, on a micro scale. This book should find a place in every analytical
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CHEMISTRY TESTS. Kexndh E . Conn. Bloomington High School, Bloomington, Indiana, and Herman T. Briscoe, Indiana University, Bloomington, Indiana. Mentzer. Bush and Co., New York City, 1939. 19 X 25.5 cm. 62 pp. (Forms A and B). Each form may he secured for $0.15 net. These tests were prepared for use with the authors' COMBINED LABORATORY MANUAL AND WORKBOOK IN CHEMISTRY, but they may be used with other texts or workbooks, which deal with chemistry a t the secondary-school level, and which are organized on the same general plan as the authors' book. I t is difficult to evaluate these tests in terms of their general usefulness in hieh-school chemistnr. The authors consider them adequate for uw with thew C o x n t w ~ LARORATORY MASUAL ASD WOUKIIOOK IS CIIFMISTRYThe units have bcen carefully prepared, and they dral adequately and well with the descriptive aspects of high-school chemistry, except in a few cases where the answers expected are too obvious, and in a few others where the correct answer is not t o he found among the four answers offered. Many teachers believe that the quantitative aspects of chemistry are very important, even a t the high-school level. These teachers will not consider the Conn and Briscw tests adequate, because of the dearth of numerical problems offered. W~SCONSKK OPBKUBIS. Srma T\FXSCON.IY a r c a n a s C?L&OB
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CALCULATIONS oa QUALITATIVEANALYSIS.L. J. Curtman. Professor of Chemistry. and S. M. Edmonds, Instructor in Chemistry, The College of the City of New York. The Macmillan Company, New York City, 1940. vii 156 pp. 2 figs. 15 X 23.5 cm. $2.00.;, PausIwL CONSTANTS oa Hyonochnso~s. G. Egloff. Reinhold Publishing Corporation, New vork City, 1939. 403 pp. 15 This text contains several hundred numerical problems which, X 23 cm. $9.00. for the mast part, deal with ionic equilibrium. The topics in"The collating and critical evaluation of physical constants of cluded in the text are as follows: (1) General Properties of hydrocarbons is of recognized importance t o all workers in hydra- Strong and Weak Electrolytes, (2) Chemical Equations, (3) Chemical Formulae and Equations, (4) Solutions. (5)Non-Redox carbon chemistry. With the tremendous increase in this field of and Redox Reactions. (6) Chemical Equilibrium and Ionization, research duringthe past fifteen years the customary sources of (7)Solubility Product, (8)The Ionization of Water-Oxonium ohvsical constant data have hecame inadeauate due t o more oreciir developments in synthesis, purification, and methods of de- Ion Concentration, (9) Cowlex Ions. (10) Theory of Redox termining physical constants. The experimental data af recent Reactions. years lend themselves t o more significant analyses. Hence, a . The text is designed to accompany laboratory procedures of greater reliability can be attributed t o relationships between the qualitative analysis or t o supplement other texts in the subject different homologous series of hydrocarbons which show the de- which do not stress the numerical calculations. In each chapter pendence of physical properties upon their structure. I n the there is given a brief discussion of the theory pertaining to the present work, the critical study of the hydrocarbon constants and type of calculation involved. I n some cases this discussion is their interrelationships t o derive useful and sound generalizations equivalent to what is usually found in the standard textbook of qualitative analysis. Although in most chapters the dercriphas been the desired goal." tive material is sufficient t o enable the student to solve the probB n m s n CHBMICALS AND TREIR MANUPA~ORBRS: TFIE OP- lems, the hook is not to he regarded as complete for a course in ~ I C I A L DIRECTORY oa THE ASSOCIATION oa Bn1r1sa CHEMICAL qualitative analysis. The appendix contains a section an matheM A N ~ A ~ U R E RAssodation S. of British Chemical Manu- matical operations which the student will find very useful. facturers. 166 Piccadilly. London. W. 1, England, 1939. Tables of ionization and dissociation constants appear throughout. Teachers of qualitative analysis will welcome a text of 487 pp. 13.5 X 21.5 cm. this type to supplement their courses in the field. This book is obtainable gratis by inquirers who are genuine WARRENC. JOHNSON purchasers of chemicals. Copies are only issued from the office Umaarrru OP C ~ C I O O of the Association t o such inquirers. CA.E*~O.ILLINOIS
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