1906 JOURNAL OF CHEMICAL EDUCATION SEPTEMBEE, 1931

acids only briclly. However, this short course inclu2es a thorough treatment of the theory, cakulations, and laboratory work on cation analysis and the identifica- tion of simple substances. The material for this short course is given in the first four parts of the book. Part V is for those students who wish to take a second se- mester in qualitative analysis. This sec- tion considers anion analysis in consider- able detail and also gives procedures for the analysis of complex mixtures.

The author has succeeded well in carry- ing out his intentions. The bwk is well written and is very nearly free of typo- graphical errors. I t appears that too much attention has been given to cells, and to the occurrence and properties of many substances. There is also con- siderable repetition. Much of it has re- sulted from the author's endeavor to make the book cover both a shorter and a longer course in qualitative analysis.

There is a wealth of material contained in the hook. Numerous problems with their answers add to its value. Sections on equations and theory are especially good. I t is the opinion of the reviewer that the book will be widely adopted.

M. C. SNEED U N ~ Y ~ R S I T Y OF MINNBSOTII MINNBISOLIS. MINNESOTA

An Intmduetory Course of Quantitative Chemical Analysis. HENRY P. TALBOT. Revised and rewritten by L. K. HAMIL-

direct precipitation method, the deter- ~ ~

mination of sulfur in pyrites instead of barium sulfate, an expansion of the pro- cedures of the analysis of brass to cover the analysis of bronze, and an introduction to the principles of potentiometric titra- tions.

The book is divided into three parts. Part I (7 pages) takes up general con- siderations of quantitative analysis and, among other things, stresses the necessity of a m a c y and points out the methods by which i t may he obtained. Part I1 (128 pages) is devoted to the subject of volu- metric analysis. The correct use of measuring apparatus is first discussed. and then procedures for the determination of various substances by neutralization, oxi- dation, and precipitation methods are given. In Part I11 (93 pages) gravi- metric analysis methods are discussed; also a number of procedures for the pre- cipitation and conversion to weighable products, and calculations of the amount of desired substance are given.

In the Appendix (21 pages) the methods and apparatus for potentiometric titra- tions are outlined and several tables are given.

This hwk presents the fundamental principles of quantitative analysis in a correct manner. The stoichiometric treat- ment of problems is clear and thorough and is well designed to give students a fine understandina of this important phase -

TON and S. G. SIMPSON of the Massa- of quantitative analysis. The problems chusetts Institute of Technology. after each discussion of stoichiometric p in- Seventh edition. The Macmillan Co., New Pork City, 1931. xii + 253 pp. 8 figs. 14 X 21.5 cm. Price $2.50.

This revised, rewritten, and enlarged (50 pages) edition follows in material and general arrangement the sixth edition of 1921. The changes and additions in- clude a thorough discussion and presenta- tion of stoichiometric principles relative to the various procedures, together with numerous problems for application of the principles.

The changes in laboratory procedures include the analysis of chloride by the in-

eiples are well chosen for the further de- velopment of and understanding by the student of the principles underlying volu- metric and gravimetric calculations This is one of the new features of the seventh edition and has added materially to the value of the book from a teaching stand- point. The procedures and methods of analysis

cover a wide field and are ample to give a student a solid foundation in this im- portant branch of chemistry.

The book is practically free from typo- graphical errors and misstatements. We

VOL. 8, No. 9 RECENT BOOKS 1907

infer that in general excellence this text has improved with each edition since 1897, and that its popularity and usefulness will he increased by the seventh edition.

H. H. BARBER U-RSITY OF MINNESOTA

MINNBAPOLIS. MINN.

An Introduction to Biochemistry. ROGER J. WILLIAMS, Ph.D., Professor of Chem- istry, University of Oregon. First edi- tion. D. Van Nostrand Co., Inc., New York City, 1931. xiv + 501 pages. 14 X 21.5 cm. $4.00.

This texthwk is designed to give stu- dents of medicine, biology, home econom- ics, and agricultue an acquaintance with the broader and fundamental aspects of the rapidly growing subdivision of sci- ence--biochemistry. The author empha- sizes the f a d that the chemistry of life is now becoming a subject of great interest to many organic chemists, and has en- deavored to interpret in this text the im- portant chemical and biological phenom- ena of the subject matter embraced under the general expression, "chemistry of or- ganisms." A student who will follow closely the general discussion as presented in this hook will acquire a gwd funda- mental knowledge of the underlying basic principles characterizing the science of biochemistry. The author presupposes that any student to follow understandingly his text will have had at least one year's course in chemistry and an additional preparatory course in the principles of organic chemistry. A knowledge of the elementary topics of physical chemistry and familiarity with the basic principles of general biology are also very essential. The author acknowledges the assistance of several workers in this country, who have made important contributions in hio- chemistry, in the construction of his book, and the general arrangement and selection of topics for presentation indicates that the author has conscientiously endeavored to present a useful and instructive text. I t is not easy to coiirdinate the literature of a field of science which is gmwing so

rapidly as that of biochemistry today. Our ideas are changing rapidly and new facts are accumulating as the result of an enormous amount of research work. The hook serves well, however, its purpose and should offer an easy opportunity for the new beginners to acquire important information and make an orderly approach to the further study of biochemistry.

The subject matter of the bwk is taken up under six sections covering in general the following topics:

1. Cell Structure, Living and Non-Liv- ing Portions of Organisms.

2 Nutritional Requirements of Organ- isms.

3. Mechanisms Used by Organisms in General for Promoting and Regulat- ing Chemical Changes.

4 Metabolism of Single Cells. 5. Metabolism in Green Seed Plants 6. Metabolism in Mammals.

As will he seen from reading these sec- tion headings, emphasis is hid on the bio- logical aspects of biochemistry rather than the chemical. Stated bridy the author has endeavored to give information as completely as possible and to answer the following questions: (1) Of what are or- ganisms composed? (2) What do or- ganisms take from their environment during growth? (3) How do they main- tain themselves during their life cycle? In the discussion of chemical transforma- tions occurring in living organisms, the author has necessarily been obliged to re- strid himself. To handle properly this feature of biochemistry would call for the construction of another very large hook. The book fits in well with the modern ad- van- of educational work in chemistry and should serve a useful purpose in gen- eral instruction in hiochemistry.

TREAT B. JOHNSON YALE u m n s , r u

NBW HAY^. CONN.

Lehrbuch der allgemeinen Physiologie. ERNST GELLHORN, a.0. h f e s s o r of Physiology. University of Halle, at present Associate Professor of Physiol-