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The author, who has worked with M. H. Fischer in Tschermak's physiologic institute at Prag, presents a review of the physiologic foundations of the much discussed pointing test, with results of experimental work of his own. Pathologic variations in the test are not considered. The conflicting results reported by various observers find much ground for explanations in the great complexity of the factors concerned in the test. The material is admirably arranged and clearly presented; the book will be heartily welcomed as it fills a long felt gap in the literature on the subject. After a brief introductory chapter on the general foundations of the test, the material is dealt with under the heads of: nonlabyrinthine influences—muscular, sensory, position of head and eyes, spontaneous symmetrical deviations, etc.; factors that influence the results through stimulation of the labyrinths; general considerations in the analysis of the test; results of personal