Composition
The structure of the squama is like that of the other cranial bones: the mastoid portion is spongy, and the petrous portion dense and hard.
Read more about this topic: Temporal Bone
Famous quotes containing the word composition:
“When I think of God, when I think of him as existent, and when I believe him to be existent, my idea of him neither increases nor diminishes. But as it is certain there is a great difference betwixt the simple conception of the existence of an object, and the belief of it, and as this difference lies not in the parts or composition of the idea which we conceive; it follows, that it must lie in the manner in which we conceive it.”
—David Hume (1711–1776)
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—George Gordon Noel Byron (1788–1824)