List of References on Vocational Guidance - Journal of Chemical

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wrote his "Elements of Chemistry." intended for the beginning student of chemistry, and in which he illustrated the scientific text by some examples of their applications in daily life, thus stimulating the interest of the beginner and permitting him t o better visualize the subject. In the present book, "Romance of Chemistry." he reverses the relative extent of description of chemical science and its practical applications. The book is intended less as a guide for beginning students in chemistry than to open the eyes of the general public t o the tremendous importance the applications of chemistry have acquired in every branch of our modern life. The subject is presented so that the average reader unacquainted with chemistry may understand it. Quite naturally the lay reader of inquisitive mind may want more information involving some theoretical explanations. Such additional information is disseminated throughout the text in special chapters and paragraphs, but in such a manner that their reading is not indispensable to follow the descriptive part of the subject, which is presented in such dear and simple language that anybody of average education can understand it. L. H. BAEKELAND

tralization and the Ionic Theory. The remaining common non-metals are treated in. the reverse order of their appearance in the periodic table. Following the non-metals, a chapter is devoted to a general introduction to the chemistry of the metals, which includes their periodic classification, atomic structure and distinguishing characteristics. The metals are then studied hy groups and subgroups, the last chapter being devoted to radio-activity. The author is conservative in his employment of the electronic theory. The statement an page 190 that "oxidation and reduction consist merely in a transfer charges" will probably not satisfy of those who prefer to visualize the transfer of electrons. However, his treatment of oxidation and reduction reactions is very fine. Group relationships and subgroup characteristics are especially emphasized. He has included many tables of properties and has paid particular attention to analytical reactions. The text is therefore suitable for use in connection with a laboratory manual of qualitative analysis. Important industrial processes are discussed from the standpoint of the principles involved. The book is strongly bound; the type is large and the illustrations, figures, and charts are clear and attractive. The text is well indexed and contains descriptions of such a large number of subGeneral Chemistry. HAMILTON P. CADY. stances as to make it a desirable reference. PKD., Professor of Chemistry, UniR. A. BAILER versity of Kansas. Second Edition. McGraw-Hill Book Co., Inc., New York, List of References on Vocational Guidance. (Prepared in the Library Di1920. xviii 540 pp. 73 fig. 14 X vision, John D. Wolcott, Chief.) Bu20 3 cm.$3.25. reau of Education, Washington, D. C., Designed for the introductory course May, 1927. Library Leaflet No. 33. in college chemistry, this text is clearly 22 pp. 15 X 23 cm. (Free.) the product of an experienced and capable

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teacher. The author follows the plan of treating the non-metals before the metals. Oxygen, Hydrogen, Water, the Laws of Gases and Mobile Equilibrium precede Symbols, Equations and the Atomic Theory. Chlorine is next presented as a typical non-metal and as an introduction to Acids, Bases, Neu-

References listed under the following headings: General References; Elementary Schwls; High Schools; Junior High Schools; Colleges and Universities, Including Teachers Colleges; Schwl Counselors and Personnel Management; Vocational Psychology; Occupations; Guidance of Negroes; Guidance in