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For example, the part of the sphenoid bone known as the Turkish saddle, becomes the edge of a sheer limestone cliff that we float over.

Applied to a protuberance of the base of the sphenoid bone.

The sphenoid bone as it extends up touches the base of the front lobe and of the Ideal region, where it assumes the name of Somnolence.

Vesalius gives a good account of the sphenoid bone, with its large and small wings and its pterygoid processes; and he accurately describes the vestibule in the interior of the temporal bone.

Under these conditions we have witnessed fractures of the parietal, of the frontal, and of the sphenoid bones.