Parts of the ear (above) and the base of the skull showing the ear canal (below). Line engraving by A. Bell after W. Cowper and G. Bidloo, 1798.

Licence: Public Domain Mark

Credit: Parts of the ear (above) and the base of the skull showing the ear canal (below). Line engraving by A. Bell after W. Cowper and G. Bidloo, 1798. Wellcome Collection. Source: Wellcome Collection.