about such instruments as t h e electron microscope about which she writes a section. In addition her information o n m i croscopy is very old and in error. One must remember while reading the book that most of the material is ancient history particularly as concerns metallic film and surface structures. However, the chapters on the properties of films a n d surfaces about which the author is more familiar, contain more reliable information with frequent reference to the literature. Particular reference is made to aluminum. T h e style of writing is typically British with numerous long a n d involved sentences. Except for a remarkable collection of early references, the out-dated book is of little value.
NEW
BOOKS
Advances in Radiochemistry. ENGELBERT BRODA. xi + 152 pages. Cambridge University Press, 5 1 Madison Ave., N e w York 10, N . Y. $2.75. Annals of the N e w York Academy of Sciences. Vol. 5 3 , Art. 2 , Terramycin. 2 4 0 pages. N e w York Academy of Sciences, 2 East 63rd St., N e w York 2 1 , N. Y. $3.00. Carotenoids.
PAUL
KARRER
AND ERNST
TUCKER, X -|- 3 8 4 pages. Elsevier Publishing Co., Inc., 2 5 0 Fifth Ave., N e w York 1, N . Y. $8.50. Chemical Kinetics. K. J. LAIDLER. 4 1 7 pages. McGraw-Hill Book Co., 3 3 0 West 4 2 n d St., N e w York 18, N . Y. $5.50. Engineering Economy. H. G. THUESEN. xvi + 5 0 1 pages. Prentice-Hall, Inc., 7 0 Fifth Ave., N e w York 11, N . Y. $6.65. German-English and English-German Dictionary for Scientists. O. W . LEIBIGER A N D I. S. LEIBIGER.
3 6 0 pages.
C A N Y O U USE L O W E R COST
sulphuric acid? • In m a n y cases where h i g h purity sulphuric acid is not necessary, tremendous savings can be realized through the use of an appropriate grade of spent acid. An i n t e r e s t i n g additional advantage w o r t h y of invest i g a t i o n is t h i s : some products made w i t h spent acid have better physical properties than those made with h i g h - p u r i t y acid. We h a n d l e hundreds of tons o f spent acids every day. These acids vary widely from h i g h quality to l o w acidity, and ire priced in proportion. Industries that require large tonnages of l o w cost acid should give careful t h o u g h t t o locating in the Gulf Coast area w h e r e this type of material i s available in great quantity. Write to us for information concerning the strengths and grades of spent acid that are available. W e shall be pleased t o assist y o u .
CONSOLIDATED CHEMICAL INDUSTRIES I N C . ADDRESS INQUIRlE5~TO: 640'-M'ELLIE ESPERSON BLDG.y HOUSTON 2 , TEXAS -
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pages. Addison-Wesley Press, 3 0 8 Kendall Sq. Bldg., Cambridge 4 2 , Mass. $6.00. Introductory Nuclear Physics. DAVID HALLIDAY. ix + 5 5 8 pages. John Wiley & Sons, 4 4 0 Fourth A v e . , N e w York 16, N . Y. $6.50. Materials of Construction for Chemical Process Industries. J. A. L E E . vii -|4 6 8 pages. McGraw-Hill Book Co., Inc., 3 3 0 West 42nd St., N e w York, N. Y. $6.50. New
Atoms.
OTTO
HAHN.
1 8 3 pages.
Elsevier Publishing Co., Inc., 250 Fifth Ave., N e w York 1, N . Y. $1.75. Proceedings of the United Nations Scientific Conference on the Conservation and Utilization of Resources, 17 August-6 September 1 9 4 9 , Lake Success, N e w York. 4 9 2 pages. Columbia University Press, N e w York, N . Y. $4.50. Soil Fertility and Sewage. J. P. J. V A N V U R E N . 2 3 6 pages. Dover Publications, Inc., 1 7 8 0 Broadway, N e w York 19, N. Y. $4.50. The Solubility of Nonelectrolytes. 3rd edition. 4 9 8 pages. Reinhold Publishing Corp., 3 3 0 West 42nd St., N e w York 18, N . Y. $ 1 0 . V O L U M E
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Edwards, 300 John St., Ann Arbor, Mich. $8.00. Industrial a n d Safety Problems of Nuclear Technology. M. H. Shamos and S. G. Roth, editors, xiii -\- 3 6 8 pages. Harper & Brothers, 4 9 East 33rd St., N e w York 16, N . Y. $4.00. An Introduction to Thermodynamics, T h e Kinetic Theory of Gases, and Statistical Mechanics.
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