S'oah
;Pe&
not for an ionic lattice which is the example chosen for the figure. Also h's (page 9) is the energy to transfer two ions separately and not an ion pair from the interior to normal lattice sites a t the surface. Such lack of precision in definitions and in discusnions of concepts is evident s t a number of places throughout the book. One gets the impression that the editing has been hurried; there are unnecessary repetition^. Far example, essentially the same account of the Hall effect is given twice with different figures and symboln (pages 32 to 34 and 69 to 72). The Tsmmenu temperature is defined in st loast
good a i d thefigures are &ll drawn and reproduced. I t may be asked, however, why the chapters are not numhcrcd in the body of the book. Misprints are more numerous than is desirable but fortunately most, are immediately obvious, for example: Pokl (page lo), Pcirls (pages 21, 24, 5001, adsorption of light (nag? 120). An exception to this occurs an page 100: ~ilieonchloride should be mdiurn chloride. For the expert already acquainted with the fundamentals of the subject, the book contains a good deal of informat,ion, some 01 which has not appeared elsewhere. However, in the balance, it must be concluded that this is not the definitive book on the defect solid state. J. A. MORRISON N A T ~ N *RLE ~ E A ~C CO XUNC~ OTT*W*2, C*X*"*
DICTIONARY OF PHOTOGRAPHY Edited by A. L. M. Sowerby, Editor of "Amateur Photomaoher!' London. Eiahteenth edition. Phifosophical Library, I&., New York, 1956. 726pp. 12.5 X 1 9 em. $10.
S ~ N Cthe E appearance of the first edition in 1889, this book has continued to h d wide use among practical photographers. The present editwn ineludos revised sections on cinematography, color photography, and flash work. Although written in England, American formulas, films, and papers are inrluded. The book is intended for the skilled amateur or nonidpeeialist professional and sppcam to serve the purpose adequately. WILLIAM M A C N E V I N UNIVERBITY OHIOSTATE co,.umus, 0 ° K
CHEMISTRY MAGIC Kenneth
M. Swezey, Brooklyn, New
York. McGraw-Hill Book Co., Inc., New
+
York, 1956. x 180 pp. Many illustrations. 15.5 X 23.5 nn. $4.50. THIShook is suitable for the high-school student, t h e science club, or t h e highschool teacher looking for additional demonstrations to create interest in science. Most of the experiments are exciting, easy to follow, and well illustrated with many
(Continued on w g e Ad96) JOURNAL OF CHEMICAL EDUCATION
photographs. There are several experiments such as the reaction of aluminum with chromic oxide on page 29, igniting a jet of hydrogen on page 49, and the p r e p aration of phosphine on page 61 that can be dangerous to a n inexperienced person. The young eoientist would do well to check with his teacher before performing the experiments. I n any case, care must be exercised to use no more than the quantity of material called for in the experiments. A simple explanation of the principles involved in the experiment in usually given. The first two chapters illustrate and explain the use of basic lahoratory equipment and technique used in a home laboratory. There are nearly 200 experiments under seven general topics: Experiments with Metals, Experiments with Gases, Elements That Are Not Metals, Electrochemistrv and Comhustion. Chemistrv in InAmong the more advanced experiments one lparns how to make hakelite, synthetic rubber, and rayon. The identification of uranium ore and how to make a cloud chamber are interesting experiments found in the atomic energy chapter. I know you will enjoy doing some of the experiments, just as I have, once you start looking a t the book. LESTER KlEFT B n c l r a e ~Umvsnarrr ~ LIW,B."R(I. PENNB~LV*XI*
TORBERN BWGMAN AS PIONEER IN THE DOMAIN OF MINERAL WATERS Uno Boklund, Almqvist & WikseU, Stockholm, 1956. 2 d s . 127 and 131 pp. 12 X 18.5 cm. 15 Swedish crowns each.
IN TAESE beautifully printed little volumes the memory of Torbern Bergman (1735-1784), who accomplished so much in so many fields of chemistry in his short lifetime, has been fittingly honored by the Swedish National Association of Soft Drinks Manufacturers through the republication of his paper "On Acid of Air" (1773) and his "Treatise on Bitter, Seltzer, Spa, and Pyrmont Waters and Their Synthetical Preparation" (1775)in facsimile form in the original Swedish and in an excellent English translation by Sven M. Jonsson. Both the Swedish and the English volume contain also a well-written appreciation of Bergman's contributions to this field by Uno Baklund. Both volumes are well illustrated with a portrait, contemporary views of Upsalrt, and title pages of the issues of Kongliga Vetenskaps A d m i a s Handlingar in which Bergman's articles on this subject originally appeared. Bergman believed that water analyai~ was a subject of great public interest and that "in this liquid substance are sometimes hidden the most vsluablo remedies for many diseases, especially chronic ones. . . ." In his dissertation of 1770, "Chemical (Continued on pnye A490)
JOURNAL OF CHEMICAL EDUCATION
