[1154] Seifert, see Heymann’s “Handb.”

[1155] Bertrand, Soc. méd. de Bologne, 1839.

[1156] Bergmann, Korrespondenzbl. d. deutsch. Ges. f. Psych., Neuwied, 1859.

[1157] Vesescu, Riv. stiintelor med., February, 1906.

[1158] Köhler, Monatsschr. f. Ohrenheilk., 1885.

[1159] Quintano, see Seifert, loc. cit.

[1160] Lesbini, La Argent. Med., 1905.

[1161] Henneberg, Berl. med. Ges., February 18, 1903.

[1162] Kayser, Klin. Monatsbl. f. Augenheilk., 1905.

[1163] Schultz-Zeyden, Berl. klin. Wochenschr., 1906.