VOL. 9. No. 5
967
RECENT BOOKS
The reviewer believes that the baok will be a useful and reliable guide for research students and chemists, and that it will prove t o he a valuable addition to chemical literature. WILLIAM FOSTER
are precipitated as a separate group with ammonia efter oxidation of the iron with nitric exid. The remainder of these elements, zinc, manganese, cobalt, and nickel, are then separated as sulfides. The classical method of procedure is, however, outP l l N C B T O N UNlVBBSlTY lined in the appendix. The anion analysis P ~ r m k w mNsw , Jeasev consists of certain preliminary tests, folA Course of Qualitative Chemical Analysis lowed by individual tests based on the of Inorganic Substances. OLIN FREE- knowledge gained from the preliminary tests. MAN TOWER,Ph.D., Western Reserve The book is well written, free from typoUniversity. Sixth edition. P. Blakisgraphical errors and is well adapted t o ton's Son & Co., Inc., Philadelphia, 1932. xv f 92 pp. 1 Fig. 15 X 23' the teaching of qualitative analysis, especially from the standpoint of the analyst. m. $1.50. GEO. W. SEARS This book, intended for students beginU ~ r v s n s r rOF ~ Nev~o* Rsao. NEVAD* nine analvsis. - the studv. of aualitative . . . retains the same general form followed in the earlier editions. Instead of the usual Analytical Factors and Their Logarithms. EARLE RADCLIFPE CALEY, M.Sc., preliminary experiments intended t o acPh.D., Assistant Professor of Chemistry quaint the student with the analytical in Princeton University. First edition, reactions of the different ions, whose Wiley and Sons, Inc., New York John separation and detection are to be deter112 pp. 13 X 19 m. City, 1932. v mined later, the student is directed t o pre$2.00. pare mixtures of these ions and carry them The purpose of this book is t o furnish, through the methods of analysis. Such a procedure is undoubtedly more interestin a readily a&essible form, a comprehening and probably just as profitable to sive set of chemical factors for the conthe student. Little attention is given to venience of Cnalysts. The baok consists the writing of equations and t o explana- of twelve tables containing factors and tions of the chemistry involved in the their logarithms, followed by a short different processes, though numerous chapter of instructions for the use of these references are given t o the general chem- tables. istry texts by Holmes and by McPberson Table I consists of the International and Henderson. Sixteen pages a t the Atomic Weights for 1931 and Their beginning of the book are devoted t o a Logarithms. discussion of the mass Law principle and Table I1 contains the Inorganic Gravihow i t affects an equilibrium. This dis- metric Factors arranged in the usual form. cussion is quite clear and readable and In the left-hand column of this table are should be easily understood by the begin- given the formula of the substance ning student. weighed, its molecular weight, the logaThe main body of the text is devoted to rithm of this weight and the appropriate the analytical procedure and explanatory temperature for the ignition of the eomnotes. These are arranged on opposite pound. The inclusion of the ignition pages so that the notes may be readily con- temperature in such a table is an entirely sulted, yet do not tend t o destroy the con- new feature inaugurated by the author tinuity of the procedure. Except in the and adds materially t o the value of the aluminum-iron group, the classical pro- table. The following columns contain, cedure is used for the cation analysis. in order, the fomulas of the substances Following the precipitation of the copper- sought, the factors for these substances tin group, aluminum, chromium, and iron and the logarithms of the factors. This
+
