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In the article of Drs. A. W. Meyer and F. A. Cajori, in the May issue, page 581, "F. A. Cajori, M.D.," should read "F. A. Cajori, Ph.D."
CORRECTION. Arch Intern Med (Chic). 1924;33(6):788. doi:10.1001/archinte.1924.00110300131009