It is not the object of this brief paper to dwell at length on all forms of tinnitus aurium, but to omit those which are so well understood and treated by every well educated medical man; as, for instance, those caused by cerumen, pressing on the membrana tympani; inflammation or swelling; exostosis or abscess of the auditory canal; that large class caused by catarrhal changes in the tympanum or middle ear, and the Eustachian tubes; changes of structure with deposit in, or on, the membrana tympani with or without perforation and polypus in or near the same region. It will be our desire to dwell on the more obscure forms which we find in disease of the internal ear, labyrinth, auditory nerve, and above all, the reflex causes of deafness, with the most distressing forms of tinnitus.
It is now well known by you that there exists a connection between