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.
This content is only available as a PDF.
Copyright, 1924, by The Rockefeller Institute for Medical
Research New York
1924