[13] Seifert: Berl. Klin. Woch., 1884.

[14] Lockhart Gibson: Brit. Med. Journ., vol. ii., p. 1488, 1908.

[15] Galezowski: Jahr. f. Aug., p. 382, 1877.

[16] Folker: Brit. Med. Journ., ii., p. 1556, 1898.

[17] Robert Jones: Brit. Med. Journ., September 22, 1900.

[18] Rayner: Journ. of Mental Science, 1880.

[19] Savage: Clifford Allbutt’s Medicine, vol. vii., p. 657.

[20] Goodall: Ibid., p. 693.

[21] Elschnig: Wien. Med. Woch., Nos. xxvii, xxix., 1898.

[22] Mannaberg: Ber. Klin. Woch., 1896.