A manual of diseases of the ear / by George P. Field.

  • Field, George P.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: A manual of diseases of the ear / by George P. Field. Source: Wellcome Collection.

    20/528 (page 2)
    in the external meatus down to the parchment of the driim (middle ear), the memhrana tympani. Darwin considered that the whole of the auricle is merely- vestigial in man, representing various folds and prominences which in the lower animals strengthen and support the ear. {Descent of Man) The late Mr. Toynbee also, after considerable investigation, held this opinion; and in a case of rodent ulcer for which my colleague, Mr. Edmund Owen, removed the whole of the pinna, the sense of hearing did not appear to be in the least diminished by the operation, FOSSA OF HELIX ANTI- HELIK CONCHA ...HEUX FOSSA OF ANTl HELIX TRAGUS ANTLTRAGUS J _LOBULE Fig. 1.—The Pinna. The helix commences ahove tie external anditoiy orifice, and taking a spiral confine round the upper and ™' ^-^f the auricle is lost on the posterior upper part of lobuk_ u front of the helix and parallel to it is another r idge, - ''^l- rristtint .^e ^d Uon the nrost important part