Tuberculous Disease of the Middle Ear.

History.-Primary and secondary types.-Incidence in (a) Phthisical patients, (b) Patients with suppurating ears, (c) Children.-Modes of infection: (a) by Eustachian tube, (b) by blood-stream.-Signs and symptoms: Painless onset; Early appearances of middle-ear; Infiltration of tympanic membrane; Multiple perforation; Granulation tissue; Type of discharge.-Examination of discharge and of granulation tissue.-Course of disease in middle-ear; Extensions; Complications.-Special types: Mastoiditis in children; Tumour formation.-Deafness.-Reports of twenty cases.