one of the original colours, exhibited by the rays of light. See OPTICS.

Green, among painters. See BOTANY, p. 634.

Gamboge will give five or six sorts of green with verdigrase. But the yellow, which some prefer before all others, is made of French berries; which is either deeper or fainter, according as the liquor is more or less stained by them. In like manner, a yellow, drawn from the roots of the barberry or mulberry, will answer the same purpose, being mixed with transparent verdigrase. As to verdigrase itself, it produces a fine bluish green, flows readily in the pencil, and may even serve as an ink to write with; but is subject to decay. Mountain-green is used for a grass colour. Verditer is a light green, seldom used but to colour landscapes that seem afar off. Sap-green is dark and dirty, and therefore never used but to shadow over greens in the darkest places. Copper-green is an excellent transparent and shining grass-green, if thickened in the sun shine, or over a gentle fire. It is the most used of any green in wathing of prints or maps.