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Electrochemistry and electrochemical analysis, A Theoretical and practical treatise for students and analysts
BOOK
REVIEWS.
ELECTROCHEMISTRYAND ELECTROCHEMICALANALYSIS,A THEORETICALAND PRACTICALTREATISE FOR STUDENTSAND ANALYSTS,by Henry J. S. Sand. Volume I, Electrochemical Theory. :33 pages, illustrations, I3 X I9 cms. Price 4 s. 6 d. Volume II, Gravimetric Electrolytic Analysis and Electrolytic Marsh Tests. I49 pages, illustrations, I3 X I9 cms. Price 5 s. London, Blackie & Son Limited. The application of somewhat unfamiliar physical concepts to chemical analysis is always done with mistrust. It is the aim of the author of these two little volumes to dispel this condition by giving a detailed theoretical discussion with acceptable deductions followed by a description of methods. This is exactly t h e division of the volumes. Volume I deals with the ionic theory, conduction of the current in the interior of the electrolyte, applications of the law of mass action to the ionic theory, electromotive force and heat of reaction, theories of interionic attraction, electrode potentials--llquid junction potentials, and irreversible electrolytic processes. This coverage is direct and rigorous with little space devoted to color or background. In Volume II attention is directed to the methods for separating metals by control of the cathode-potential with the aid of an auxiliary electrode, this given in the general treatment of gravlmetric electrolytic analysis including internal electrolytic analysis, micro-chemical analysis and electrolytic Marsh tests. The size of the volumes preclude exhaustiveness of treatment but references to more specialized treatises and to original papers are made. A perusal of these volumes by those who may be interested in applying this method of analysis will be beneficial. R. H. OPFER~ANN. TECHNICAL DRAWING, by Frederick E. Giesecke, Alva Mitchell and Henry Cecil Spencer. Second Edition, 687 pages, illustrations, plates, i6 X 24 cms. New York, The Macmillan Company, I94o. Price $3.oo. The advance of the engineering sciences has made taboo the old and only requirements of applicants for positions as draftsmen that they state they are qualified and show a sample of lettering. While skill in drawing still plays a large part, technical drawing has become highly specialized with the particular branch of the engineering sciences to which it applies. To become a finished draftsman requires a knowledge of the details of construction employed in the particular branch of engineering. This book has for its purpose a comprehensive treatment of the science of technical drawing arranged logically, and containing a large group of practical problems. It is in its second edition, having been increased in scope to meet varied needs. In the beginning there is given a description of the instruments and materials and an explanation of their use. The geometry of technical drawing involves the solution of many practical problems which are given followed by pro92
REVIEWS.
ELECTROCHEMISTRYAND ELECTROCHEMICALANALYSIS,A THEORETICALAND PRACTICALTREATISE FOR STUDENTSAND ANALYSTS,by Henry J. S. Sand. Volume I, Electrochemical Theory. :33 pages, illustrations, I3 X I9 cms. Price 4 s. 6 d. Volume II, Gravimetric Electrolytic Analysis and Electrolytic Marsh Tests. I49 pages, illustrations, I3 X I9 cms. Price 5 s. London, Blackie & Son Limited. The application of somewhat unfamiliar physical concepts to chemical analysis is always done with mistrust. It is the aim of the author of these two little volumes to dispel this condition by giving a detailed theoretical discussion with acceptable deductions followed by a description of methods. This is exactly t h e division of the volumes. Volume I deals with the ionic theory, conduction of the current in the interior of the electrolyte, applications of the law of mass action to the ionic theory, electromotive force and heat of reaction, theories of interionic attraction, electrode potentials--llquid junction potentials, and irreversible electrolytic processes. This coverage is direct and rigorous with little space devoted to color or background. In Volume II attention is directed to the methods for separating metals by control of the cathode-potential with the aid of an auxiliary electrode, this given in the general treatment of gravlmetric electrolytic analysis including internal electrolytic analysis, micro-chemical analysis and electrolytic Marsh tests. The size of the volumes preclude exhaustiveness of treatment but references to more specialized treatises and to original papers are made. A perusal of these volumes by those who may be interested in applying this method of analysis will be beneficial. R. H. OPFER~ANN. TECHNICAL DRAWING, by Frederick E. Giesecke, Alva Mitchell and Henry Cecil Spencer. Second Edition, 687 pages, illustrations, plates, i6 X 24 cms. New York, The Macmillan Company, I94o. Price $3.oo. The advance of the engineering sciences has made taboo the old and only requirements of applicants for positions as draftsmen that they state they are qualified and show a sample of lettering. While skill in drawing still plays a large part, technical drawing has become highly specialized with the particular branch of the engineering sciences to which it applies. To become a finished draftsman requires a knowledge of the details of construction employed in the particular branch of engineering. This book has for its purpose a comprehensive treatment of the science of technical drawing arranged logically, and containing a large group of practical problems. It is in its second edition, having been increased in scope to meet varied needs. In the beginning there is given a description of the instruments and materials and an explanation of their use. The geometry of technical drawing involves the solution of many practical problems which are given followed by pro92