any extent by the addition of blue, -- usually deep blue green, -- or carmine, or one of the purples. This word "purple," as referring to what is generally called crimson, such as ruby purple, crimson purple, etc., is apt to be confusing, as it does not correspond with the purple of the pansy, for instance. In other words, purple of the mineral palette is applied to crimson, and does not signify the color generally known as royal purple. 1.
Both deep violet of gold and light violet of gold are exquisite shades of purple, and the nearest approach to the color for pansies, lilacs, violets, iris, or fleu-de-lis, clematis, and, in fact all purple flowers.
The yellows are the easiest of all colors to use, and, with the exception of ivory yellow, fire and glaze well.
Ivory yellow sometimes is, under certain conditions, a little unreliable, Used pure, it will not admit of many firings.
It, however, possesses on agreeable quality as a compensation that makes it valuable, -- it is one of the soft, and consequently very fusible, colors.
1. This color, known astyrian purple, the only purple color known to the ancients, was obtained from a mollusk, and only in very Minuit quantities ; hence its value. Its production formed the chief industry of the city of Tyre, and was adopted by the ancients as the symbol of imperial power, probably from its great scarcity and enormous cost.
