A treatise on the physiology and diseases of the ear ; containing a comparative view of its structure and functions, and of its various diseases, arranged according to the anatomy of the organ, or as they affect the external, the intermediate and the internal ear / By John Harrison Curtis.

  • Curtis, John Harrison, 1778-approximately 1860.
Date:
1817
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the physiology and diseases of the ear ; containing a comparative view of its structure and functions, and of its various diseases, arranged according to the anatomy of the organ, or as they affect the external, the intermediate and the internal ear / By John Harrison Curtis. Source: Wellcome Collection.

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    nerves are even more acute or sentient than in the other parts of the body. All the nerves of the internal ear display a soft pulpy substance, but are never seen in the form of a firm cord. The auditory nerve also as it enters the inter- nal passage of the ear, is accompanied by a larger artery than most of the other nerves, to heighten the sensibility; for increased circula- tion has everywhere this effect; and it also forms into plexus, or combinations, for the same purpose. From this view, then, the parts essential to hearing are,— First. An external ear ;* for in man, when- ever this part is completely removed, deafness is a consequence. * The external ear can only be considered as accessary in its functions to the internal; and it was conceived by the Count de Buffon, that hearing could take place without it. This he considered proved by the instances ofdogs, and other animals.