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In this figure are shown the winding passages of the ear (the labyrinth of the ear). The middle part of it (v) is the vestibule. From this go out on the upper side the semi-circular canals (x,y,z) and on the lower side of the passages of the cochlea (k). The opening into the vestibule (o) is covered by the second drum. Another opening (r) is also covered by a membrane or drum. The cochlea (k) is so called because it is shaped like a snail's shell.

The Cochlea and Passages of the Ear

In this figure are shown the winding passages of the ear (the labyrinth of the ear). The middle part…