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Or Quercitron Yellow Is What Its Name Implies It Is Dark In

substance, in grains of a glossy fracture, perfectly transparent, and
when ground is of a beautiful yellow colour. In painting it follows, and
adds richness and depth to, gamboge in water, and goes well into
varnish; but any lead used in rendering oils siccative, browns it, and
for the same reason it is useless in tints.


Or chromate of baryta, is exceedingly difficult to make well. Upon the
mode of manufacture depend not only the beauty of the colour but its
stability. If properly and carefully prepared, it is of a vivid lemon
tint, deep or pale, very clear, very pure and permanent. It also washes
well, and is entirely free from the slightest tinge of orange. This may
be pronounced the only chromate which possesses durability, not being
liable to change by damp or foul air, by the action of light or the
steel palette-knife, or by mixture with white lead and other pigments,
either in water or oil, in both of which it works pleasantly. Lemon
yellow is chiefly adapted to points of high light, and has a peculiarly
happy effect when glazed over greens in both modes of painting. In water
it exceeds gamboge in brightness, and compounded therewith improves its
beauty. This mixture also goes readily into oil; indeed it is the best
and easiest way of rendering gamboge diffusible as an oil colour--simple
emulsion of the gamboge in a little water, and trituration of the lemon
yellow therewith, being all that is requisite for the purpose.

Lemon yellow has not much power, and is semi-opaque. In distance, its
light wash is used with great effect for cool sunny greens, for which a
minute quantity of emerald green may be added to it. Being uninjured by
lime, the colour is eligible in fresco and crayons.


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