On some points in the physiology of the tympanum : read before the the [sic] Section on Physiology of the Medical Society of London / by George Pilcher.

  • George Pilcher
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: On some points in the physiology of the tympanum : read before the the [sic] Section on Physiology of the Medical Society of London / by George Pilcher. 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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    over the membrane; it is circular, and much more abundant at the circumference, and does not appear to reach the malleus, with the exception of a few fibres at the apex. A diagram, copied from a microscopic drawing of the membrana tympani exhibiting the radiating and circular fibres, the dermoid structures being removed. Mr. Toynbee has described these two layers of fibres as continuations from the periosteum of the sur- rounding bone ; the external radiating of that of the osseous portion of the outer meatus, and the internal circular continued from that of the walls of the tym- panum ; it seems certain, and I am not aware that it has been ever disputed, that the proper fibrous mem- brane is intimately attached to the surrounding perio- steum, and is consequently continuous with it; but continuity of structure by no means necessitates iden- tity of structure ; for example, the tendon of a muscle, or the ligament of a joint, though continuous, camiot be regarded as identical with the periosteum; and Mr. Blenkiens, who is an authority upon such mat-
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