of Radioisotope GRAFTON CHASE : Principles Methodology. Burgess Publishing Co. Minn., 1959. 286 pp., $6.50. Principles of Radioisotofie Methodology is designed as a laboratory manual, emphasizing methods and procedures. Specific laboratory techniques are included in the volume which was reproduced by an offset An important feature of the book is the process. inclusion of blanks for the experimental data. This approach has distinct advantages for the beginner in radioisotope work, and it is for this group that Dr. CHASE has prepared the manual. R very concise statement of the theoretical material related to the experiment is included, although there is probably not enough detail given to permit the book to be used It is unfortunate independently of other text material. that this material is not adequately referenced, although an appendix gives a fairly complete list of pertinent published material in a chronological setting. The book will be quite useful for a relatively elementary course in the use of radioisotopes. Some of the experimental procedures are reprinted directly from the U.S. Pharmacopeia. The appendix material includes a series of lecture outlines for the theoretical portions of a course, although there is no indication as to specific sources of information on the various topics. An excellent set of problems and other valuable material are contained in the appcndiccs. In general, one can say that it is an excellent book for its purpose. R.
C. H. WASHTELL: Detectors. George 21s.
historical account of radioactivity and atomic structure and then proceeds to describe the gas-filled type of detector. The opening paragraph on proportionality (p. 17) does not make it clear that the output pulse from a proportional counter is proportional to the energy lost in the counter by the incoming ionizing particle (i.e. to the initial number of ion pairs formed) and is not necessarily proportional to the applied anode voltage. The section on GeigerMtiller counters provides a very useful introduction to the many designs and includes a most comprehensive list of commercially available types together with their characteristics. Ionization chambers and proportional counters are briefly described in a separate chapter. The section on scintillation counters contains much factual information on the various designs in common use and includes a list both of commercial tubes and scintillators. Experimental arrangements of counting geometries and collimators are also briefly described in the text. There is little mention of associated electronics in the book, which omission helps focus attention on the detectors themselves. Promise is made of a further volume dealing with the electronics. A chapter on the important topic of dosimetry completes the book. The paragraphs dealing with permissible dose rates should now be read in conjunction with the Recommendations of the International Commission on Radiological Protection which were adopted after this book was published and which have recently appeared in print. (Pergamon Press 1959). R. A. hLEN
Radiation Counters and Newnes, London, 115 pp., Radiation Biology. Edited by J. H. MARTIN, Scientific Publications L3.3~. Butterworths (Academic Press Inc., New York, $11.00).
TIME book is written to provide an outline of the design and use of counting devices to new workers in the field of radioactivity in research, medicine and industry. In this aim, the book succeeds. Readers with little previous experience of counters and counting techniques will derive the most benefit from this volume. It is pointed out in the preface that the explanation of detector characteristics is non-rigorous, in the interest of conveying basic principles to newcomers in the field. The volume commences with a short
THIS book consists of a series of papers read at a meeting of the Australian Radiation Society in 1958. Apart from three contributions on radiation chemistry, one on physics and one on laboratory design, all the work described is of a biological nature. As always happens in conferences of this kind, some authors have simply reported the latest development in their particular field, while others have produced comprehensive reviews of fashionable topics. The 237