This, the thirty-second part of a large work on internal medicine, covers the subject excellently, and is up to date. Those who have had trouble in correlating the signs of cerebellar disease and in fully grasping the Bárány tests will find the numerous diagrams helpful. The volume includes consideration not only of the inflammatory and vascular lesions of the cerebellum and brain stem but also of tumors of this region, including tumors of the cerebellopontile angle, and epidemic (lethargic) encephalitis. The discussion of symptomatology is especially full and detailed, and the literature is given more extensively than is usual in a work of this kind; but in neither are the important and determinative sufficiently separated from the subsidiary and nonessential. The illustrations are excellent and nearly all really illustrate something. As in most French works, there is no index: only a table of contents.