Artists' Colours Therefore Vitrification Does Not Impart

: ON THE PRIMARY, BLUE.

permanence.



The grittiness to which we have referred is one of the defects of smalt,

which cannot, consistently with preserving its colour be entirely freed

from that drawback--an objection which pertains to vitreous pigments in

general. Hence it does not wash well, and in mural decoration is

sometimes applied to work by strewing the dry powdered colour upon a

flat ground of white or blue oil paint immediately after the latter is

laid on, whilst it yet remains wet. Of little body, it is a vivid and

gorgeous blue; bright, deep, and transparent, bordering on the violet

hue. It is chiefly employed in illumination and flower painting. The

inferior kinds of smalt are occasionally adulterated with chalk.



TTITLE CYANINE.



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