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6
23.
The shadow will be burnt ,terra-verte'.
6
24.
THE PROPORTIONS OF COLOURS.
If one ounce of black mixed with one ounce of white gives a certain
shade of darkness, what shade of darkness will be produced by 2
ounces of black to 1 ounce of white?
6
25.
Remix black, greenish yellow and at the end blue.
6
26.
Verdigris with aloes, or gall or turmeric makes a fine green and so
it does with saffron or burnt orpiment; but I doubt whether in a
short time they will not turn black. Ultramarine blue and glass
yellow mixed together make a beautiful green for fresco, that is
wall-painting. Lac and verdigris make a good shadow for blue in oil
painting.
6
27.
449
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