I,
Recent Books
Handbook of Organic Analysis, Qualita- brought together. It will he valuable as a tive and Quantitative. HANSTHACHER laboratory manual for students and as a CLARKE, D.Sc., F.I.C. 4th edition. handy reference volume for research E. EMMETTREID Longmans, Green & Co., New York. workers. Edward Arnold & Co., London. 1926. xii 363 pp. 23 figures. 12 X 18 Applied X-Rays. GEORGE L. CLARK, Ph.D.. Assistant Professor of Applied cm. $3.00. .. Chemical Research, Massachusetts InChapter I, 25 pp., is devoted to the prestitute of Technolow. McGraw-Hill liminary examination of the substance Book Co., Inc., ~ e w ~ o City. r k First for its purity and to finding the elements 255 pp. 99 illustraedition. xiii present. I n Chapter 11, 73 pp., all the tions. 14.5 X 23 cm. $4.00. common classes of organic compounds are The industrial executive and his labartaken up and their characteristic reactions described, particularly those that atory director frequently inquire whether are useful in their detection. Chapter X-rays will be useful in connection with 111, gives briefly a plan for separating their problems. It is the purpose of this compounds of different classes. Chapter book to tell what X-rays are and to show IV, 187 pp., the mast important part of what they have been made to do so far. the book, is a dassiIied table of a thousand The book is exceedingly well written from of the most important organic compounds. this point of view, and gives not only a The compounds of a class, such as alde- clear statement of the fundamental prinhydes or alcohols, are arranged either ciples and their application to industrial according to their boiling points or their problems, but also many practical sugmelting paints. Under each compound gestions as to the various types of equipare given its properties, its characteristic ment and where they may be obtained. Metallographers in industry will find reactions. and the melting. points of its . derivatives. the book invaluable. Colloid chemists Chapter V, 23 PD., will find Chapter 19 highly suggestive. .. is on the quantitative determination of the elements and Chap- The book is not intended as a class-roam ter VI, 19 pp., on the quantitative estima- text and probably could not be used suction of groups. Chapter VII, 19 pp.. is cessfully as such, but every class n phvqics devoted to methods of determining or physical chemistry should have access physical properties. There is an index to i t as a reference book. The high-school of the compounds covered besides the teacher of physics or chemistry who reads i t thoroughly can hardly help being general index. This is an improved edition of a useful a better and mare inspiring teacher. He book. The identification of organic com- will find himself with a new stock of illuspounds is interesting and useful to the trative material which will he useful durstudent as i t gives full scope to his in- ing the whole school year. Most college genuity and develops his acquaintance teachers of physical chemistry cannot with the properties and reactions of or- afford to be without it, and the teacher of ganic compaunds. I n this book the mate- metallography will find the book very rial is logically arranged and the subject much worthwhile in his effortsto keep upis well dewloped. Recent methods are to-date. given and much useful information is WHBELERP. DAVEY
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