Abstract
In Vol. xxxix, No. 1, Plate 2, Columns 1 and 2, now headed by the captions Lead I and Lead II respectively, should be interchanged. The electrocardiograms in Column 1 are Lead II; those in Column 1 are Lead I.
In Vol. xxxix, No. 1, Plate 2, Columns 1 and 2, now headed by the captions Lead I and Lead II respectively, should be interchanged. The electrocardiograms in Column 1 are Lead II; those in Column 1 are Lead I.