2.—ETCHING.
This method admits greater freedom of handling than graver work. The design is drawn through a resisting ground with the etching point, and the exposed lines on the surface of the copper corroded to the requisite depth with aquafortis, the finishing of the work being usually done with the graver.
Transfer, direct from Engraved plate to stone.
Etching on Copper reproduced by process block.
From the collection of W. H. K. Wright.
Machine ruling or tinting is now much used in conjunction with line engraving and etching, for the even tints of skies and level surfaces in pictorial work, and for the symbolical lines denoting tinctures in heraldry, of which several examples are given.