786
JOURNAL OF CHEMICAL EDUCATION
to follow some of the statements relating to valency unless one possessed considerable knowledge concerning the structure of atoms. In the opinion of the reviewer, an early and thorough chapter on the structure of matter would be very hrlpful, cpecially to younger students of chemistry. These are minor criticisms, however. The reviewer extcnds hearty congratulations to the author as well as the puhlisher an the excellency of the second edition. The book is a very valuable contribution in the field of inorganic chemistry, and should he well received by chemists, students, and teachers. WILLIAMFOSTER
APRIL,1932
space devoted to each topi-unless the book be used as a text in a so-called short course in the elements of physical chemistry. Although concise, the volume contains dependable and accessible information on (a) physical and chemical change; ( b ) kinetic molecular theory; (c) atomic theory; (d) thermochemistry; and (e) velocity of reaction in homogeneous and heterogeneous systems. Except for the lack of reference t o the scientific contributions of other than European contemporaries, the book is an historic delight. The lists of suggested further readings a t theclose of each chapter are excellent hut these also take almost no cognizance of chemistry in the Western Parricrror U ~ r v s a s l r v PnrNrnroN. N e w I f n s e Y Hemisphere. The "Practical Work" (lahoratory exercises) and "Questions" beChemical Change. DENNIS BROOK tween chapters certainly should stimulate B n ~ c c s ,Science Master a t Bradfield the initiative of the student in his manipuCollcge. J. M. Dent and Sons, Ltd., lation, observation, formulation, and essay London. 1831. Mi pp. 1.5 Figs. 19 composition. X 12.5 cm. 5s. A few pages each devoted to atomic This little volume is a new and welcome structure, the colloidal state of matter, memher of Dent's "Modern Science and electrochemistry would be welcomed Serirs," of which E. J . Holmyard is the' by physical chemists. A short statement general editor. The author intended the of the "half-life" method of determining theorder of a reaction would be helpful. hook "to provide a n introduction t o the Cotton-seed oil is probably as important more advanced works on chemistry for a source of solid edible fats as is whale oil. those who have already been grounded Onsager should receive recognition for his in the elements of the subject, and who helpful contributions to the Debyeintend to pursue their studies farther." Hiickel theory of ionization. The author The reviewer is somewhat in doubt is perhaps a bit too enthusiastic over the as to the degree of training intended by the phrase--"grounded in the elements ability of this newer ionization theory in accounting for the behavior of strong of the subject." If the author meant merely a substantial course in first-year electrolytes. "Chemical Change" should enhance chemistry, then the book is too advanced as it uses (for example) the keto and enol most personal chemical libraries. JESSE E. DAY forms of acetoacetic ester as illustrative Tnz Onm ST*-rr. U N I V ~ ~ S I T Y of dynamic isomerism. Other references COLUMBIIS. O"l0 to organic chemistry leave the impression that the author includes a reasonable Industrial Chemistry. ALLEA ROGERS, knowledge of organic and perhaps of Ph.D.. Supervisor, Industrial Chemical analytical chemistry as a part of the Engineering Course and Head of elementary grounding. If the latter Department of Chemical Engineering, assumption is correct then the book offers Pratt Institute, Brooklyn, New York, too brief a treatment of chemical change, in collaboration with nineteen other both as t o the topics included and the experts. Two Volumes: Volume 1,
