Pathological and surgical observations on the diseases of the ear / by Joseph Toynbee.

  • Toynbee, Joseph, 1815-1866.
Date:
1841
Catalogue details

Licence: Public Domain Mark

Credit: Pathological and surgical observations on the diseases of the ear / by Joseph Toynbee. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    in hospitals and infirmaries of various diseases; and as a general rule they came into my possession, unaccompanied by any particulars respecting the patients during life. DISSECTIONS. Nos. I. and II. From an adult. The right ear.—The external meatus is in a healthy state. The membrane of the tympanum is very delicate, and quite transparent, so that the handle of the malleus is distinctly seen through it. The cavity of the tympanum contains but a very small quantity of mucus, which is spread over the surface of the investing fibro-mucous membrane. The latter membrane is so extremely thin and trans- parent, that its presence upon the surface of the osseous walls of the tympanum cannot be detected without the use of a magnifying glass, and by the aid of the touch. The nervous filaments upon the surface of the promontory are most distinctly seen; the margin of the fenestra rotunda is distinct and defined, and the membrane which closes it is thin and transparent. The ossicula at first sight do not appear to be covered by any membrane. The crura of the stapes and their point of attachment to its base are seen distinctly, and between the inferior surface of these crura and the promontory is seen a distinct fissure. The left ear presents the same appearances as the right.