26 NOVEMBER 1927, Page 45

THE CHEMICAL ELEMENTS AND THEIR COM- POUNDS. J. A. V.

Butler. Macmillan. 6s. SCIENCE TO-DAY : A BRIEF STUDY OF SOME OF THE PRO- BLEMS OF TO-DAY'S PHYSIC AND CHEMISTRY. P. J. L. Smith and S. J. Dale. (Blackie. 5s.)-The former book is intended for the University student. It is neither popular nor erudite and, in treatment of each topic, shows a regard for the sequence in which knowledge has grown ; for example, a résumé of the work of Haiiy, Wollaston, Mitscherlich and Tutton opens the section on " The Structure of Crystals." A compact bibliography closes each chapter. The book achieves distinction. No less respect for historical order marks the latter work. While it differs from the former in being planned for school use, it is quite as exceptional in quality. Given a classical Vth or VIth form boy or girl with a grip of elementary Mathematics but with only limited time in which to continue earlier (and perhaps neglected) Science teaching, here is that helpful book for which the Science master has been searching.