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In the article by Dr. Joseph I. Gouterman, "The Rôle of Calcium in Essential Glaucoma" (Arch. Ophth. 2:670 [Dec.] 1929), the second sentence in the last paragraph on page 670 should have been enclosed in brackets.
In the first paragraph under the center head "Experimental Observations on the Rôle of Calcium in Glaucoma" on page 672, the third sentence should read: "Sollman9 stated that excess of calcium ions tends to depress and their deficiency to increase excitability."