BURRELL CORPORATION

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with pertinence to security and cost problems encountered in such arrange­ ments. The impact of automation in analyti­ cal chemistry is forcefully driven home in every one of the papers of this mono­ graph, and it would be unfair to cite any to the exclusion of the rest. Indus­ trial analysts will be inspired by the accomplishments here reported, es­ pecially by those working in the medi­ cal sciences.

Statistical Theory and Methodology in Science and Engineering. K. A.

BURRELL

" F o r Scientists

Everywhere"

ADVANCED I N S T R U M E N T A T I O N for GAS CHROMATOGRAPHY New BURRELL KROMO-TOG IONIZATION MODEL K-7

Brownlee, xv + 570 -pages. John Wiley & Sons, Inc., J^Jfi Fourth Ave., New York, Ν. Υ. 1960. $16.75. Reviewed by John Mandel, National Bureau of Standards. Washington, B.C. This is a well-written textbook on statistics for readers with a moderate knowledge of mathematics but with a fairly high degree of maturity in the comprehension of mathematical reason­ ing. As a textbook for a college course in what is now considered classical statistical methodology, this work is a highly useful addition to the growing number of good books that have recently appeared in this field. The reader who intends to use it for self-study must be prepared to spend an appreciable amount of time and ef­ fort in its study but his task will be lightened by the author's lucid style. He will also have the assurance that the material presented is sound statistical theory. The title suggests that the book is of particular interest to scientists and engineers. In this reviewer's opinion this is to be taken with some qualificalion. Admittedly the examples chosen to illustrate the statistical techniques as well as many of the exercises deal largely with scientific or engineering questions. The choice of topics is, generally speaking, a felicitous one for this class of readers. But the book makes no attempt to present solutions to problems that are specific to the scientist and engineer. It is a statistical text, useful as general background to anyone confronted with problems of statistical inference. But such topics as the theory of errors, precision and accuracy, the adjustment of observa­ tions and curve fitting, all of which are of particular interest to the analytical chemist, receive no adequate treatment. In conclusion, the book is highly recommended to those who are willing and able to study statistics as a disci­ pline in its own right. The analytical chemist whose time for studv or whose

• Ultra-Sensitive, Completely Safe, Ionizing Detector • Analyzes Fixed Gases and Both Organic and Inorganic Compounds • Column Temperature Programming-Either Manual or Automatic

The new Burrell Kromo-Tog Model K-7 is designed for the most accurate chromatographic analysis possi­ ble. Its thermionic emission ionization detector has greatly increased sensitivity, speeds analysis and per­ mits use of small diameter columns and smaller sam­ ples. It is the only m e t h o d t h a t will analyze b o t h organic and inorganic compounds as well as fixed or permanent gases. Superior standard equipment includes a gas sam­ pler, c o l u m n t e m p e r a t u r e i n d i c a t o r , a u t o m a t i c controller for constant or programmed temperature operation, built-in flowmeter, and flash vaporizer. Po­ tentiometer recorder, offered separately, mounts next to Model K-7 on laboratory bench or table top. Request complete data—ask for Bulletin No. 841.

B U R R E L L

CORPORATION

SCIENTIFIC INSTRUMENTS AND LABORATORY SUPPLIES

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VOL. 33, NO. 1, JANUARY 1961

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