Diseases of the ear / A. Marmaduke Sheild.

  • Sheild, A. Marmaduke (Arthur Marmaduke)
Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: Diseases of the ear / A. Marmaduke Sheild. Source: Wellcome Collection.

    68/312 (page 48)
    eulogised by various authors. A special reference must be made, however, to the method of Gardiner Brown. This is founded on the principle that, if a large fork of medium pitch be placed upon the fore- head of a person with normal hearing, the surgeon holding the stem of the fork between his linger and thumb can feel the vibrations as long as the other can hear them. Should the surgeon feel the vibrations longer than the patient can hear them, the nerve apparatus may be suspected to be at fault. Should the patient hear the vibrations longer than the surgeon can feel them, the conducting media are in some way implicated. I need hardly point out that this method requires great delicacy of perception on the part of the surgeon, accuracy on tlie part of the patient, and care and patience by both parties concerned. It is, however, highly recommended by so good an authority as Urban Pritchard. Much assistance will be given to the .surgeon in these cases by a sound knowledge of the jDathological conditions causing, or associated with, nerve-deafness. Such are congenital defects, esjsecially marriages of consanguinity; hsemorrhagic or inflammatory exuda- tions into the labyrinth in syphilis, after mumps, meningitis, and severe attacks of the specidc fevers; in pernicious auiemia and other htiemorrhagic aflec- tions ; grave injuries, as fracture of the base of the skull; violent noises, as the explosion of big guns; repeated concussions leading to congestion of the nerve apparatus in boiler-makers, and riveters. Nerve- deafness may also be associated with cerebral tumours, general nerve disorders, mental shock and worry, and especially tlie advancing decay of old ago. This subject will be again alluded to. For the present its