Encyclopedie d. Ohrenh. Art., Auge, Ostmann, 1900.
5.
Diseases of Ear, 1901.
6.
Woodward, Arch. f. Otol., January, 1906.
7.
Lehrb. d. Ohrenh., 1906.
8.
Otogene Erkrank. d. Hirn., 1903.
9.
Ohrenh., 1904.
10.
Diseases of the Ear, etc., 1906.
11.
Diseases of the Ear, 1905.
12.
Otit. Erkrank. d. Hirns, etc., 1902.
13.
De Schweinitz and Randall. System; Complications of Tympanic Inflammation, 1899.
14.
Diseases of the Ear, 1903.
15.
In addition to this material I have included all cases reported in the last (1906) volume of Transactions of the American Otological Society, of Intracranial Otitic Complications in which an ophthalmoscopic examination was made. They are one case of lateral sinus thrombosis (Gruening), and two cases of cerebellar abscess (Dench, A. Knapp). Gruening's case was particularly interesting as there was bilateral mastoiditis with exposure of both sinuses at operation. Characteristic temperature changes arousing suspicion of thrombosis, an examination of the fundus was made and hyperemia of the discs found on both sides. On only one side, however, did this progress to optic neuritis, and on the strength of this finding, and in spite of the absence of evident local changes in the sinus wall of this side, and the presence of some discoloration on the other, the apparently healthy sinus was opened and found to contain an infected clot. Here the diagnosis was made by the ophthalmoscope alone, not only unsupported, but actually contradicted by the local signs.
