Yellow JAPAN Grounds.—For bright yellow grounds, the king's yellow, or the turpeth mineral, should be employed, either alone or mixed with fine Dutch pink: and the effect may be still more heightened by dissolving powdered turmeric root in the spirit of wine of which the upper or polishing coat is made; which spirit of wine must be strained from off the dregs before the seed-lac be added to it to form the varnish.
The seed-lac varnish is not equally injurious here, and with greens, as in the case of other colours; because being only tinged with a reddish yellow, it is little more than an addition to the force of the colours.
Yellow grounds may be likewise formed of the Dutch pink only; which, when good, will not be wanting in brightness, though extremely cheap.