NEWS contact with mathematics will find some of the derivations unfamiliar and a bit tough. It would not be easy to open the book to any particular subject and begin reading without having first absorbed some of the beginning logic and develop ment. The notation is handled well and is consistent, but again it is much easier to follow if started from the be ginning. The statistics would be regarded by statisticians, as generally sound except for those points where statisticians generally do not agree. For example, the pooling procedure involving pre liminary tests of significance discussed in Chapter 7 and later on in the analysis of covariance is one which might be re garded as questionable. There is a very interesting treatment of the split-plot design given which should make this useful, agriculturalinspired design quite acceptable to ehemists. This book should be excellent for chemists who intend to become serious students of statistics and a valuable addition to the statistician's library as well. The authors have done a tre mendous job of bringing together a lot of useful statistical methods and giving some good advice on how to use them.
NATIONAL
Qualitative
Inorganic
Maryland, College Park, Md. Professor Chariot's text on the theory and new methods of qualitative analysis was first published in Paris in 1942. The present work is a translation from the manuscript of the fourth French edition. This book is one of the most refreshing on this subject that has come to the attention of the reviewer in many years. The author has ably condensed mate rial that would require the searching of manj- books. The first third of the book is devoted to a rigorous treatment of the theory of qualitative analysis. The theoretical discussions are followed by well chosen examples. Redox poten tials, equilibrium constants, and hydrolytic precipitation are given especially thorough treatment. Many excellent tables are included; an example is the table giving the pH of precipitation of hydroxides. The second section of the book deals with the properties of the ions and the means of identification. The conven
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tional hydrogen sulfide method is not used and separations are kept at a mini mum. Highly selective tests for the ions are used in preference to separa tions. Organic reagents producing both colored and fluorescent products are employed extensively. I t is a pleasure to see so much new material in a text. The sensitivity of each test is given and wave lengths are listed for the visible spectra of the elements where appropri ate. The inclusion of most of the so-called rarer elements is an excellent feature. The properties and detection of many less familiar compounds of the common elements are also treated. The third section of the book gives a brief discussion of techniques, and out lines for the analysis of solutions and solids. Semimicro techniques with drop quantities and centrifuging are used in the identifications and separations. Sentences throughout the book are very short and often incomplete, giving the impression of an outline form. Directions are often general and will re quire considerable knowledge and intui tion on part of the student. In many places both in theory and laboratory work, extensive explanations on part of the teacher will be necessary.
