Co. 8vo. Pp. x+144. Of their own motion or in conformity with the unanimous recommendation of the conference of colleges and preparatory schools held at Columbia University in February, 1896, most of the better colleges have abolished the superannuated entrance requirement of a formal examination in arithmetic, and now prescribe in its stead the ability to solve numerical problems in plane geometry and a knowledge of the metric system and in some cases of logarithms. Mr. Estill's book, which is

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... intended to furnish the requisite exercise in all three subjects, contains 49 pages of problems divided into books corresponding to the usual arrangement of the geometries in more general use. These are followed by 52 pages of recent entrance papers of an unusually large number of colleges, together with individual problems taken from similar papers. A five-place table of logarithms, with explanations and examples, occupies the next 38 pages; and the book concludes with the metric tables of weights and measures, including tables of English and metrical equivalents. The book is not intended to take the place of other geometries, but to be used with them. The problems seem to be generally well selected. The metric system is used from the start, a favorite habit of the author being to give the data in metric units and to require the results in English measure, or vice versa. This