potentiometric titration, applied methods of analysis (inorganic and organic substances), analysis of urine and blood, analysis of water and sewage, and volumetric analysis of gas. But even so, the book may have fallen short of its somewhat pretentious subtitle, wherein it is claimed that the subject matter is "adapted to the reauirements of Dure chemical research.. . ~atholaeical chemistry, pharmacy, metallurgy, manufacturing chemistry, photography, etc., and for the valuation of substances used in commerce, agriculture, and the arts." Certainly the present revision shows some marked improvements over the retiring edition, among which may be mentioned the incorporation of theoretical matter in connection with neutralization methods, the addition of a short chapter an potentiometric titration (as already indicated), and the introduction of 8-hydroxyquinoline as a precipitant for either aluminum or magnesium and of potassium periodate as a colorimetric reagent for manganese. I t is not difficult t o discover minor imperfections here and there: those oxidimetric processes that depend upon the use of a standardized solution of ceric sulfate, because of their great nicety, might well have been allotted more space; iron wire and ferrous ammonium sulfate for establishing the titer of potassium p-anganate solutions are hardly to be regarded as reference substances of the first order; the procedure of Wells and Mitchell far the estimation of titanium could have been omitted with propriety on account of the very low results obtained by the original investigators; the reduction methods of Knecht and his disciples, which involve unusual manipulations, are described with toogreat paucity of detail; but such judgments may be passed upon almost any printed work. On averaging the more with the less desirable, we are forced t o the conclusion that the hook under consideration is a remarkably good "storehouse" of information on volumetric analysis. I t is safe t o say that there are few chemistry libraries without the current volume of "Sutton" on their shelves, where, we hope, it may be found for many a year. WILLIAM M. THORNTON. JR. Tan J o a ~ H s ~ P X Z NUNNBRSITY S BILTIIORB. MD.
ORGANICSOLVENTS, PHYSICALCONSTANTS AND METHOUSOF PumaIcnTxoN. Arnold Weissberger and Erich Proskauer. Translated from the German manuscript by Randal G. A . New. Oxford Universitv Press. 114 Fifth Ave.. New York City, 1935. ii 210 pp: 1 5 . 2 5 ' ~23.25 cm. $5100.
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I n the preface the authors state: "In recent yearsimprovements in the methods of organic chemistry and the enhanced interest in the chemical physics of non-aqueous solutions have led t o an ever-increasing demand for variety and purity in organic solvents." This reason has led the authors to make a collection of physical constants and of methods of purification for these solvents. The aim of this book is to make readily accessible the abundant material which has been accumulated by chemists and physicists in recent years. To this end an organic chemist and a physical chemist have collaborated. I t is the hope of the authors that a study of the systematic list of solvents and of the numerical data, classifiedsystematically, contained in the hook will facilitate the choice of the proper solvent t o assure the success of physical and chemical work, which is so often primarily dependent on that factor. They have attempted t o assemble a list adapted to as many different requirements as possible. The present is the first edition of the hook, which has been translated into English from the original German manuscript. The contents of the hook are divided into four sections: I. Systematic Classification of Solvents; 11. Tables of Physical Constants; 111. Purification of Solvents; and IV. References t o Literature. The solvents are arranged in order of increasing chemical complexity, according t o the following scheme: (A) Hydrocarbons (aliphatic saturated; aromatic; aliphatic unsaturated). (B) Compounds with one type of characteristic atom or group
(hydroxy-compounds; esters; amines; etc.). (C) Compounds with more than one type of characteristic atom or group (esters of hydroxy-acids; chlora-alcohols; chloro-amines, etc.). In groups (B) and (C) the substances are arranged according t o the nature of the hetero-atom, in the order 0 , CI, Br, N, S One hundred fifty-seven solvents are classified. Section I1 lists the more important physical constants of these solvents. Each solvent is taken as the subject of a table which consists of four columns. I n the first column each physical constant is denoted by a number which occurs in every table. The second column indicates the special conditions under which the constants have been determined. The third column contains the preferred values for the constant, and the fourth column refers t o the list of literature references which comprise Section IV of the book. The constants listed are: 1. Structural formula. 2. Beilstein reference. 3. Molecular weight. 4. Density. 5. Melting or freezing point in 'C. 6. Boiling point in 'C. 7. Vapor pressure in mm. Hg. 8. Latent heat of evaporation ingramcals / gram. 9. Specific heat in gram cals./gram/"C. 10. Cryoscopic constant in degrees lowering for 1 g. mol. solute in 1000 g. of solvent. 12. Viscosity in c. g. s, units. 13. Electrical canductivity in reciprocal ohms. 14. Dielectric constant. 15. Dipole moment in Debye units c. s. 0.). 16. Refractive index. 17. Ultra-violet absorption. 18. Infra-red absorption. 19. Flash point in 'C 20. Association, hygroscopicity, toxicity, etc. 21. Reference to methods of purification which are the subject matter of Section 111. The authors have accomplished their purpose. The subject matter is well written and splendidly arranged. Tables and printing are clear. Methods of purification are discussed sufficiently for general laboratory practice, and the list of references t o the original literature is remarkably complete and up to date. No errors were noted. I t is the opinion of the reviewer that this book would be a valuable addition to the library of any laboratory conducting organic or organo-physical research. M. H. DASKAIS 341 ST. PA^. PLACE BALTTMORR, MARYLAND
HANDBOOK OF CHEM~STRY AND PHYSICS. Charles D.Hodgman, Editor in Chief. Twentieth edition. Chemical Rubber Publishing Co.. Cleveland. Ohio, 1935. xiv 1951 pp. 10.5 X 16.5 cm. $6.00.
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The mast notable innovations in the twentieth edition of the handbook are those relating to organic compounds. Dr. Austin M. Patterson has prepared a slightly abridged form of the "Definitive report of the commission on the reform of the nomenclature of organic chemistry," J. Am. Chenz. Soc., 55, 3905-25 (1933). under the title. "Rules for the Naming of Oreanie Campounds," and t o it has appended a list of " ~ r e f i x N a m e s of Organic Radicals." Dr. Patterson has also revised the nomenclature of the "Physical Constants of Organic Compounds." I n so far as possible every organic compound appearing in this table has been named in accordance with the rules laid dawn by the International Union. Such compounds are indicated by an asterisk. Those not covered by these rules are named as nearly in accordance with them as possible. These features make the handbook the only compact and convenient style book of organic nomenclature now available. The table of physical constants (organic) has been changed from tabular to dictionary style with considerable saving in space. I n the reviewer's opinion convenience of reference is also enhanced. Over 1100 new compounds have been added. A "Formula Index of Organic Compounds" is a further addition. "The Pronunciation of Chemical Words" (pp. 814-25) has been reprinted by permission from a report of the Nomenclature, Spelling, and Pronunciation Committee of the American Chemical Society, Ind. Eng. Chem., News Ed., 12, 202 (1934). Other additions and revisions are "Properties of the Amino Acids"; "X-Ray Spectra" (revised) ; "Magneto-Optic Rotation"; "Colorimetry" (revised). OTTOREINMUTH
