qI Recent Books
I
I
- I, Laboratory Exercises and Problems in General Chemistry. B. SMITH H O P ~ ~ NUniversity S, of Illinois, and HARVEY A. NEVILLE, Lehigh University. Revised edition. D. C. Heath & Co., New York City, 1931. 164 pp. 29 Figs. 15 X 23 cm. xii $1.76.
+
erences to Hopkins' "General Chemistry" makes the book well adapted for use with that text. The type and arrangement of the material gives the printed page an attractive appearance. C. D. CARPENTER co,.oawr* ulrrvsnsrrY Nsw YORK C I ~ Y
"Laboratory Exercises and Problems in General Chemistry" by Hopkins and Tests in Chemistry. CHARLESE. DULL, Head of Science Department, West Neville is a clearly written guide for stuSide High School, and S ~ p e ~ s of or dent laboratory work. Science for the Junior and Senior High Part I comprises sixty-two experiments Schools, Newark. N. J. Henry Halt most of which duplicate the experiments & Co., Inc., New York City, 1931. 68 of a good beginner's course in a secondary pp. 15 Figs. 19 X 24.75 cm. $0.32. school. The purpose of this paper-back book, Part I1 comprises thirty-eight (63-100) experiments dealing mainly with the in loose-leaf form, is t o furnish a set of metals, the preparation of a few important twenty-eight tests, averaging thirty quessalts, and a brief introduction to the meth- tions each, covering the entire field of ods of qualitative analysis. Five simple chemistry an usually taught in secondary unknowns are given, and finally. Exercise schaols. While the tests follow the seq u a = of topics as presented in the 100 outlines the vrocedure for a "General author's textbook, "Modern Chemistry" Unknown." [reviewed J: CHEM. EDUC., 8, 1901-2 Part 111is entitled Chemical Arithmetic. in which one hundred and fifty problems (Sept., 1931)],they may beused with highare stated involving the following cases: school textbooks. The test questions, I. Percentage Composition; 11. Chemi- which are of the true and false, completion cal Formula from Percentage Composi- and substitution type, may be used as intion; 111. Amount of One Substance Re- structional as well as achievement tests. Each test will be completed by the student, quired to Combine with or Displace a Given Amount of Another Substance; IV. in the majority of cases, in thirty minutes Specific Gravity of Solids and Liquids; and could be checked by the individual V. The Correction of Gas Volumes for pupil in a t least ten minutes. By keeping Temperature. Pressure, and Water Vapor; his individual tests, the pupil could deterVI. Gram-Molecular Volume; VII. Normal Solutions. The book also contains a list of the apparatus and chemicals pupil and teacher. EDWINL. FREDERICK needed by the student, an appendix listing F O B E PABK ~ I HZOH SCXOOL important units and constants, and a page B A W r M O a s , M*snANo of "First-Aid Instructians." The outstanding feature of the book is Living in a Wodd of Science. Water and Air, Energy and Power; Heat the fact that the work outlined is within and Health. MORRISMEISTER,New beginning stuthe cavacitv . . of an average York Training School for Teachers, Coldent to complete, yet the exercises are exlege of the City of New York, and Editensive enough t o lay a satisfactory tor. The Scimre Classroom. Charles foundation for later work. Frequent ref397
JOURNAL OF CHElMICAL EDUCATION
398
Scribner's Sons, New York City. 1930 and 1931. xvi 238 pp.; xviii 238 pp.; xviii 237 pp. 162 Illustrations; 175 Illustrations; 165 Illnstrations. 13 X 19 cm. $1.08 each.
+
+
+
These books are a part of a series of texts, "Living in a World of Science," intended for the seventh and eighth grades. [The fourth b w k of the series"Magnetism and Electricity"-was reviewed in the J. C ~ MEDUC., . 6, 2070 (Nov., 1929).] According t o the author the selection of the content in each text was guided by three major principles: 1. There is general and wide acceptance of certain major units of study for the course in the junior-high-school science. 2. Local conditions must be permitted to determine the degree of emphasis upon units and the order in which they are t o be considered. 3. The further selection of material and activities for each unit must be based upon a set of criteria which are educationally valid. I n accordance with this thud principle the following criteria were used in determining the most desirable subject matter: 1. To what extent can the item of content be taught objectively? 2. To what extent d m the item interest the pupil? 3. T o what extent is the item adapted to the abilities of the pupils? 4. How frequently does the item occur in the normal experience of the pupil? 5. To what extent d m the item represent a knowledge or skill which the pupil will find of value when an adult? The subject matter of each text is divided into sixteen chapters on "a chapter a week" plan. A science "story" is used to introduce each chapter. Each unit includes a review test, a page of problem pictures, a list of things to read and think about, and a list of things to do and make. Each chapter is profusely illustrated with practical, familiar, and homely enamples of the applications of science in everyday life. Theoretical discussion is
FEBRUARY, 1932
reduced to a minimum. The style is infamal, dear, readable, and often conversational. The numerous science "stories," anecdotes, newspaper references, and experiments should appeal t o every boy and girl interested in science. Many excellent teacher- or pnpil-demonstration experiments and individual pupil laboratory experiments are described. This series of texts is recommended to teachers of general science and physics who desire a series of experiments to supplement those found in the usual textbook in these fields. Pupils will welcome this series as an important addition to the science library. C. M. PRTJIIT UNNBRSITI OR ALABAMA UKIY&BSITY.ALABAMA
Potentiometric Titrations. DR. I . M. KOLTEXOFP, Professor of Analytical Chemistry, University of Minnesota, FURM&. Ph. D.. Assaciand N. ate Professor of Chemistry. Princeton University. Second edition. J o h n Wiley & Sons, Inc., New York City, and Chapman and Hall, Ltd., London, 1931. xiv 482 pp. 74 Figs. 23 X 15 un. $6.00.
HOWELL
+
The purpose of this book is t o collect, discuss, and critically evaluate the methods of potentiometric analysis. I n the reviewer's opinion, this has been done in a very excellent manner. The general arrangement i s t h a t of the first edition. However, the authors have felt i t wise to reduce the space allotted to the theoretical treatment in order that more might he available for the newer developments in the field. The first three chapters of the first edition have been condensed t o nine pages. The next three chapten on theoretical considerations remain as before. I n spite of this the book has adually increased in size by 132 pages. Without depreciating in the least the general excellence of the work, and appreciating fully the reasons for the a u t h m ' choice, the reviewer feels that i t might have been worth the extra cast to include a fuller discus,ion of the theoretical aspects.
