ARKIN.-Amer. Ji. Path., July, 1930. BENNETT and LEvINE.-Jl. Amer. Med. Assoc., Vol. CLXXVII, June, 1929. BOCK.-Zeitschr. f. Augenheilk., Vol. LXIX, June, 1929. Ibid., Vol. LXXVIII., July, 1932. CHRISTELLER.-Arch. f. Verd., Vol. XXXVII, 1926. EVANS.-Proc. Roy. Soc. Med., Vol. XXXVI-I, No. 2, p. 40, December, 1943. FRIEDENWALD and RONES.-Arch. of Ophthal., Vol. V, February, 1931. GAYNON and ASHBU...