BOOK REVIEWS

Book reviewed in this article: Graphs for Reference, by Ernest W. Ponzer, Stanford University, Cal Progressive Problems in General Chemistry. By Charles Baskerville and W. L. Estabrooke Elementary Text‐book of Physics, Part I, General Physics, by R. Wallace Stewart A Text‐book of Differential Calculus A Text‐book of Integral Calculus The Problem of the Angle‐bisectors. A dissertation submitted to the faculty of the Ogden Graduate School of Science of the University of Chicago in candidacy for the degree of Doctor of Philosophy. By Richard P. Baker Exercises in Elementary Algebra, by May A. Blodgett Arithmetic, by John C. Stone, head of the Department of Mathematics, State Normal School, Montclair, N. J., and James P. Millis, head of the Department of Mathematics, Francis W. Parker School, Chicago. I. Primary Arithmetic . Pp. xii+223. II. Intermediate Arithmetic . Pp. xi+240. III. Advanced Arithmetic The Teaching of Agriculture in the High School, by G. A. Bricker An Introduction to Zoölogy, by Robert W. Hegner, Ph.D., Assistant Professor of Zoölogy in the University of Michigan A Course of Qualitative Chemical Analysis of Inorganic Substances, with Explanatory Notes, by 0. F. Tower, Adelbert College, Western Reserve University. Second edition, revised Elements of Geology, by Eliot Blackwelder, Associate Professor of Geology, University of Wisconsin, and Harlan H. Barrows, Associate Professor of General Theology and Geography, University of Chicago A Text‐book of Botany for Colleges and Universities, by J. M. Coulter, C. R. Barnes, H. C. Cowles. Vol. I, Morphology and Physiology Standard Elocution and Speaker, by I. H. Brown Tables for the Determination of Minerals by Means of Their Physical Properties, Occurrences, and Associates, by Edward H. Kraus and Walter F. Hunt, University of Michigan