The Thiele theory of partial valences is equipment of the laboratory, and denot mentioned, nor is the C m - B r o w n scription, care, and use of instruments rule t o be found in the index as such. are excellent, and the illustrations well As described in page 475, the student chosen. The descriptions of methods is required t o memorize two lists of radi- of analysis are concise, dear, and devoid cals. The general and equally reliable of unnecessary verbiage. If followed Vorlander modification of Crum-Brawn's rigorously, and with the necessary skill, dependable results will ensue. Certain rule has been also omitted. I n view of the present wide use of the quinhydrone modifications in technic which have met electrode and the Clarke and Lnbs series favor are omitted, but that is a matter of substituted sulfone phthaleins as of author's judgment and user's choice. indicators, the reviewer would like t o The careful inclusion of calculation have seen these substances included in a formulas will be very welcome to those bwk as comprehensive as this one, not sufficiently accustomed t o the arithrather than some of the less important metical manipulation of analytical data. In a book so replete with data and tables, compounds mentioned. The book is well printed on good paper. i t is excusable that some errors should The author and publishers are t o be appear and even statements that the congratulated an the excellence of the author on further consideration would proofreading as the book is remarkably modify. free from typographical errors. From a chemical standpoint, the Despite the faults found the reviewer theoretical chapters do not assume on enioved reading the book and he has no the part of the reader much mastery of . hesitation in recommending it as a fundamental science, without which any teachable text sure t o be of value t o both discussion of physiological and pathologistudents and teachers of organic chem- cal processes must be incomplete. Many istry. of his readers, not thus equipped, will L. C. MACTAVI~K rejoice at this, and will be satisfied with the general theories and facts presented. Where opinions in interpretation differ, the presentation is fair and reference t o Blood and Urine Chemistry. R. B. H. literature generous. Inspiration t o furGRAOWOHL, M.D., Director of the ther reading and deeper study should Gradwohl Laboratories, St. Louis, Mo. result. and I. E. Gradwohl, A.B., Instructor in the Gradwohl School of Laboratory Technic, St. Louis, Mo. C. V. Moshy Company, 3523-25 Pine Blvd., St. Louis. m e A B C of Hydrogen Ion Control. Mo., 1928. 542 pp. 117 illustrations W. A. TAYWR, Ph.D., Chemical Director. The LaMotte Chemical Products and 4 mlor plates. 17 X 25'14 cm. Co., Baltimore, Md. Fifth Edition, $10.00. 1929. 132 pp. 18.5 X 26.5 cm. IllusThe first sentence of the preface, t o trated. Free. the effect that the work is a textboak for ~
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laboratory workers and practitioners of medicine, invites the statement of opinion that a physician with only the usual training in chemistry should not assume the duties and responsibilities of a biological chemist, even with the help of a technician. The chapters on the installation and
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The fifth and enlarged edition of this booklet is in line with the steadily increasing numbers of practical applications of hydragen-ion measurements t o the various types of research and industrial work. The material presented is divided into five main portions: The Meaning of Hydrogen-Ion Concentration, including
VOL.6. NO. 4
RECENT BOOKS
a discussion of the meaning of the pH scale and of pH values, and methods of making determinations (pp. 7-24); Applications (25-78); Materials and Equipment (79-112); Special Chemicals (113114); Materials and Equipment for Wster, Sewage and Industrial Waste Analysis (115-131). Some of the new sets which have been added in this edition are:
This book is the second of the publications of the Henry C. Frick Educational Commission. It is a report of a recent experiment in introducing a group of outstanding humanitarians direct t o highschool pupils; the comments of the pupils; and the effort to make the assembly program the beating heart of the highschool organization. M. w . G .
page 88 llB 118 123
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For those who possess an earlier edition of this booklet, this fifth edition will be a necessity. Any one interested in the subject of hydrogen-ion control will find a vast store of information hetween its covers. M. W. G . Popular Science Talks, 1927-1928. Presented by Members of the Faculty of the Philadelphia College of Pharmacy and Science and published under the auspices of the American Journal of Pharmacy. I . GRIFBITH,Editor. Vol. VI. Phila. Coll. Pharm. & Sci., 1929. 249 pp. 15 X 23 cm. $1.00. The contents listed helaw indicate the scope of these talks. The Romance of Cookery. C. H. La Wall The Heart. A. Viehoever he ~ e a l m of the X - b y . I. Gti5th Building Stones. 1. Sfurmer The preservation of Foods. L. Gershmfeld what and where Are the Stars? G. Roeengarten, Sumac and Po~aonIvy. H. C. Wood Ice-wet and Dry. P. Q. Card The Rare Elements. P. P. Stroup nuropean Flowers in Commerce and Culture. E. F. Cook mame. G. W. Perkina h i m a l s That Live in Man. M. S. Dunn.
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Youth and the Good. School Betterment Studies. Vol. 1. No. 2. HENRY C. Fnrcn, Educational Cammission, Pittsburgh, Pa., 1929. 76 pp. 12.5 X 18 mu. Free.
the Support and Encouragement of Research in Science a n d I t s Technologies. Compilers. C. HULL AND C. J. WEST, Bulletin of the National Research Coun1 No. 66. Second Edition. Published by The Nat. Res. Council of the Nat. Acad. of Sciences, Washington, D. C., 1928. 90 pp. 17 X 24.5 cm. 51.00.
The Scope . o.f the Bulletin. The phrase "Funds for Research" has been used t o cover all funds which are used for the purpose of actual research, but as far as possible 'funds available only far administrative purposes have been omitted. Hence, the information here presented concerns funds available for the encouragement and support of research in the form of medals, prizes, grants, or institutional funds. "It is hoped that the publication will he a t least a helpful and suggestive contribution to those interested in the status of scientific research in the United States." M. W. G .
