1. Biedi, A., andRaab, W.—Deut. med. Woch.,48: 1630, 1922, Quoted byNandi, A. K.,Indian Med. Gaz.,84: 187, 1949.
2. Bisland, T.—Am. J. Ophth.,34, 874, 1951.
3. Chaudhuri, K. C.—Personal communication, 1956.
4. Cockayne, E. A.—Arch. Dis. Child.,11: 1, 1936.
5. Cockayne, E. A., Krestin, D., andSorsby, A.—Quart. J. Med.,4: 93, 1935.