• About coloring materials.
The composition of colors as respects those leading tests of
excellence, preservation of general tints, and permanency of
brilliant hues, during their exposure for many centuries to the
impairing assaults of the atmosphere, is a preparation in which the
ancient preparers of these oily compounds, have very much excelled,
in their skilfulness, the moderns. It is a fact, that the ancient
painted walls, to be seen at Dendaras, although exposed for many
ages to the open air, without any covering or protection, still
possess a perfect brilliancy of color, as vivid as when painted,
perhaps 2000 years ago.
The Egyptians
mixed their colors with some gummy substance, and applied them
detached from each other without any blending or mixture. They
appeared to have used six colors, viz., white, black, blue, red,
yellow, and green; they first covered the canvas entirely with
white, upon which they traced the design in black, leaving out the
lights of the ground color. They used minium for red, and generally
of a dark tinge. Pliny mentions some painted ceilings in his day in
the town of Ardea, which had been executed at a date prior to the
foundation of Rome. He expresses great surprise and admiration at
their freshness, after the lapse of so many centuries. These are,
undoubtedly, evidences of the excellence of the ancients in their
art of preparing colors. In the number of them there is, probably,
not much difference between the ancient and modern knowledge.
The ancients
seem to have been possessed of some colors of which we are ignorant,
while they were unacquainted, themselves, with some of those more
recently discovered. The improvements of chemistry have, certainly,
in later times, enriched painting with a profusion of tints, to
which, in point of brilliancy at least, no combination of primitive
colors known to the ancients could pretend; but the rapid fading in
the colors of some of the most in many of the productions from our
esteemed master, Sir Joshua Reynolds, which, although they have not
issued from his pallet more than 40 years, carry an to lose, in many
instances, the identity of the subjects they represent. On this head
(and a most important one it is), the superiority of the ancient
compounders
completely carries away the palm of merit.