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PART III. The Analysis of Cardiac Irregularities. I,N the preceding articles I have dealt almiost exclusively with illustrations of the value of electro-cardiograplly in the examlination of hearts which beat regularly. In the present article I propose to describe and illustrate the more important forms of heart irregularity as they are portrayed by this method. Formerly it was customary to class all types of cardiac irregularity together, or at the most to distinguish between " intermitFigs. i5c, b, and c. Three electro-card tence " and so-called intermittence of

ELECTRO-CARDIOGRAPHY AND ITS IMPORTANCE IN THE CLINICAL EXAMINATION OF HEART AFFECTIONS