CHAP. 12. (6.)—PIGMENTS OTHER THAN THOSE OF A METALLIC
ORIGIN. ARTIFICIAL COLOURS.
Colours are either1
sombre or florid, these qualities arising
either from the nature of the substances or their mode of combination.
The florid colours are those which the employer
to the painter at his own expense; minium,3
namely, armenium, cinnabaris,4
purpurissum. The others are the sombre colours. Taking
both kinds together, some are native colours, and others are
artificial. Sinopis, rubrica, parætonium, melinum, cretria and
orpiment, are native colours. The others are artificial, more
particularly those described by us when speaking of metals;
in addition to which there are, among the more common colours,
ochra, usta or burnt ceruse, sandarach, sandyx, syricum, and