The sketch that we have given of the general anatomical arrangement of the auditory apparatus conveys an idea of the uses of the different parts of the ear. ... The free passage of air through the external meatus and the communications of the cavity of the tympanum with the mastoid cells, ... is essential to the proper conduction of sound to the labyrinth ; the presence of liquid in the labyrinth is a conditionanbsp;...
|Title||:||The Physiology of Man: Special senses. Generation. 1874|