When the interior of a piece is to be shown as a piece cut in half, or when a piece is broken away, as is done to make more of the parts show, or show more clearly, the surface so broken away or cut off is section-lined or cross-hatched; that... Read more of Section Lining Or Cross-hatching at How to Draw.caInformational Site Network Informational
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Composition Chemical Analysis Has Shown Several Of The Blues To Be








oxide of copper with a small proportion of iron; none containing cobalt.
There is little doubt, however, that the most brilliant specimens--those
which retain all their original force and beauty in the temples of Upper
Egypt after an exposure of three thousand years, consist of
ultramarine--the celebrated Armenian blue, possibly, of the ancients.





Next: The Reds Seem For The Most Part To Be Composed Of Oxide Of Iron Mixed




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