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This attractive monograph reveals the continuing inspiration of Charles Foix, whose untimely death robbed France of a great clinician. The author carries forward and gives graphic proof of many of the ideas of his master concerning the function of the coordinating centers in the maintenance of equilibrium and concerning the nature of muscular tonus. It is a study in clinical physiology, reenforced by photographs, myograms and foot imprints in normal and pathologic cases. The introduction of new terms and of terms utilized by previous French workers in this field without careful definition of the terms or description of the related phenomena renders the essay somewhat difficult to abstract. Moreover, the complicated nature of the subject and the variations brought about by various combinations of tonic and equilibratory phenomena are apt to be confusing to the beginner.
Essentially, the author indicates tests for muscular hypotonia in various disorders of the nervous