At the end of the last chapter we described the manner in which to a simple job in colours might be applied the methods previously detailed for making keystone, setoffs, and registering. In the practice of Chromo-lithography it is, however, very necessary to become acquainted with the methods of making tints which imitate more or less effectually light washes of colour, as seen in water-colour drawings, &c. These methods we proceed now to point out.

158. Of the Different Methods of Making Tints.—The method of producing a tint given in par. 157, though the simplest one, is only adapted for producing one uniform colour, and therefore is very limited in its application. If the student will examine some of the subjects frequently to be met with, which are printed in black and one or two tints, he will notice that each colour or tint consists of more than one gradation. If he will study also those imitations of chalk drawings on tinted paper which are generally imported from Paris, he will find that the lights appear as if they had been laid on with white chalk. To obtain these effects in a more rapid manner than could be done by the methods of drawing previously described, is the object of tint-making, though all of them are frequently introduced in one work in the higher branches of the art. Tints, as understood by the lithographer, usually mean masses of somewhat light colour spread over large spaces. They consist of two or more gradations, though the term is equally applicable when variety of light and shade is not attempted.