BOOK REVIEWS

Book reviewed in this article: Armenia and the Armenians, by Kevork Asian, translated for the French by Pierre Crabites. Zoology, a Textbook for Colleges and Universities, by T. D. A. Cockerell, Professor of Zoology, University of Colorado. Experimental Organic Chemistry, by Augustus P. West, Ph.D., Professor of Chemistry, University of the Philippines. Laboratory Manual of Elementary Colloid Chemistry, by Emil Hatschek. What Will Metric Standardization Cost, by The World Trade Club. Second Course in Algebra, by W. B. Ford, Professor of Mathematics in the University of Michigan, and Charles Ammerman, the William Mc‐Kinley High School, St. Louis. Number by Development, Vol. III, Grammar Grades, by John C. Gray, A. M., Superintendent of Schools, Ckicopee, Mass. Household Arithmetic, by Katherine F. Ball, M. A., Vocational Adviser for Women, the University of Minnesota, and Miriam E. West, M. A., Teacher of Mathematics, Girls Vocational High School, Minneapolis. Applied Arithmetic, by N. J. Lennes, Professor of Mathematics in the University of Montana, and Frances Jenkins, Professor of Elementary Education in the University of Cincinnati. Plane Trigonometry for Secondary Schools, by Charles Davison, Sc. D., Mathematical Master at King Edward's High School, Birmingham. Applied Mathematics, by Eugene H. Barker, formerly Head of the Department of Mathematics in the Polytechnic High School, Los Angeles, Calif. Infinitesimal Calculus, Re‐issue, by P. S. Carey, M, A., Professor in the University of Liverpool. Elements of Vector Algebra, by L. Silherstein, Ph.D., Lecturer in Natural Philosophy at the University of Borne.