1. FRIEDENWALD and PIERCE (1931).-Bull. Johns Hofikins Hosp., Vol. XLIX, p. 259.
2. GRAHAM (1876).-T. Graham Chemical and Physiological Researches. MEYER and PALMER (1936).-Amer. Ji. of Ofhthal., Vol. XIX, p. 859.
3. ROBERTSON (1939).-Brit. Ji. of Oihthal., Vol. XXIII, pp. 106, 170.
4. ROBERTSON and WILLIAMS (1939).-Jl. Physiol., Vol. XCV, p. 139.
5. The specimen may be designated diprosopus tetrophthalmus in;association with anencephaly