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"Diagram of the Middle and Internal Ear." — Blaisedell, 1904

Ear

"Diagram of the Middle and Internal Ear." — Blaisedell, 1904

"<em>A</em>, oval window; <em>B, C, D,</em> semicircular canals; * represents the bulging part of each canal; <em>E, F, G,</em> cochlea; <em>H</em>, round window." &mdash; Blaisedell, 1904

Internal ear

"A, oval window; B, C, D, semicircular canals; * represents the bulging part of each…

"Semicircular arch, he center of which is in the same line with its springers." &mdash; The Encyclopedia Britannica, 1910

Semicircular Arch

"Semicircular arch, he center of which is in the same line with its springers." — The Encyclopedia…

Isometric of a prism with a semicircular top.

Prism With Semicircular Top

Isometric of a prism with a semicircular top.