IT might reasonably have been supposed that there was no field in the United States for a new concise manual on physical geography. Yet the cooperation of one of the most original observers of geological phenomena with the practical teacher of geology in Colgate University has given us a book that we should be very sorry to lay aside. It has, like many of its rivals, been brought unmodified into the English market, where it will appeal to teachers rather than to junior scholars. It would be, indeed, no more suited, with its wealth of American illustration, to European classes than Huxley's description of the Thames Valley would be to dwellers on the Mississippi or the Hudson. But in the continent of North America this little book should take a foremost place. The abundant photographic illustrations are excellent and well chosen. They are not reduced, as in some small text-books, to blurred patches which suggest no natural landscape. The process-blocks seem to us to vary slightly in grain, whereby some of the smaller ones have been brought to a rare degree of delicacy; the sand-ripples on the dunes in Fig. 83 will serve as an example. To name two other suggestive pictures, the contrast of delta and cliff in Fig. yj, and the geognostic details of the “creeping” rock-surface in Fig. 59, are especially well presented. An Introduction to Physical Geography. By Grove Karl Gilbert Albert Perry Brigham. Pp. xvi + 380. (London: Hirschfeld Brothers, Ltd., 1902.) Price 5s net.