JOURNAL O F CHEMICAL EDUCATION
In Part One, Chapters 1, 7, and 11 are either out ol place in this volume or rambling and best left unsung. Chapter 8 by Daolittle on Newtonian flow is probably the foremost contribution and is well worth reading by every serious student of solvent action. Other subjects well handled are light scattering by inhomogeneous materials (unfortunately too limited in outlook), the role of the electric double layer, the depth of a surface, and paper chromatography. I t would seem that regardless of what subjects might be treated in Part Two thew u-odd be colloidal aspects, yet the treatment of genes and bioohemical reactions and that of the tubercle haeillus are colloidal only by association, and the 52 pages on dental caries belong to the subject only through occasionill mention of enzymes. To the colloid chemist the most significant subjects dealt with in this part are complexes of ions with proteins, adaptive formation of enzymes, the interaction of drugs and enzymes, and surface chemistrj~ and biology. Part Three on technological applications contains 21 chapters, the prinripal critickm of which is that they tend to he too brief or limited in outlook to be substantial oontributions. The reviewer believes that the chapters on cellophane, protective wrappings, and packaging have not justified the space taken, and several others are on the doubtful list. Es~eciallvto be remarked upon among the better chapters a r e t h e treatments of rubher reclaiming, sonic agglomerstion of carbon black, organophilic clays, oil well t~.eatmmt,detwgents, textile fibers, and photosensitive glms. S. S. KISTLER
NOBTON COMPANT WORCEBTER, MABSACBDSETTB
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CRYSTAL GROWTH
H. E. Buckley, Head of the Crystallagraphy Department, The Viotoda University of Manohester, England. John Wiley & Sans, Inc., New York, 1951. mi 572 pp. 88 plates. 169 figs. 31 tables. 14.5 X 22 om. $9.
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THIS is a fescinating and rtmasingly complete book, and is clearly a labor of love by one well versed in his field. Over 600 references to the original literature, including many very obscure sources, testify to the thoroughness of the coverage. While it is true, perforce, that most of these references are for the oeriad before 1940 and the war. some are as recent as 1949. The lmc,k i.i profu.i~Iy~ l l u i i t r ~RS ~ dO,W 1.n" P W from the. listing n l w w , lrud rlv illwtrstimr an. nell cltorn, very rl,nr, and to [I.+.
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\\hilt t h r style of eritiug is sumeshst formal, the metcrinl is arll prrsmted and the degree of lucidity is h i ~ hi . v w ru a rradcr unfaurilinr with the field. It is rrmde quitc rlcw thruualwut rho book that, in its current state, the study of crystal growth is an a r t and not a science. Some scientists may be annoyed that this approach permeates all the discussions so thoroughly, but such would seem inevitable a t the present stage of development. This weakness, if such it be, is even enmeshed in the theoretical and mathematical discussions which are presented primarily from the historical approach, and are currently in such a state that no definitive answers are possible for most of the theoretical problems raised. One hes the feeling, on reading the book, that its biggest ser-
at a \.ice is tu bring tu:..thcr thr rrlsjority of-r~~rrrminformrti
