1. Paul, J., Medicine, Baltimore, 1928, VII, 383.
2. 1901 (quoted by Paul). 3; Bezangon;Revaut, P.; de Paris, Thdse,1926
3. Naish, A. E., Lancet, Lond., 1928, ii, 10.
4. Fraser, A. D., Ibid., 1930, i, 70.
5. Ewart, W., Brit. Med. J., Lond., 1926, i, 717.