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In the article by Drs. Jonas S. Friedenwald and H. F. Pierce, entitled, "The Circulation of the Aqueous : I. Rate of Flow," in the April issue (7: 538, 1932), the formula that follows the line "limits of accuracy of the chemical measurements" is part of footnote 31 and should appear at the bottom of the page.
CORRECTION. Arch Ophthalmol. 1932;7(5):792. doi:10.1001/archopht.1932.00820120144016