551. WATER-COLOURS USED IN DRAWING
Indian Ink.—The best is stamped with Chinese characters, breaks with a glossy fracture, and feels smooth when rubbed on the plate.
Hair Pencils are made of camel's-hair; if they come to a point, when moistened, without splitting, they are good.
Drawing Paper.—That made without any wire marks, and called wove paper, is the best; it is made of various sizes and thicknesses.
To make a good white.—Clarify white lead with white-wine vinegar. After the powder has settled, pour off the vinegar, put the powder into a glass of water, stir it, and pour the water off while it is white into another glass; when it is settled, pour off the water, and an excellent white will be obtained. To this add gum enough to give it a gloss.
552. DIRECTIONS FOR MIXED COLOURS
Ash Colour.—Ceruse white, Keating's black and white, shaded with cherry-stone black.
Bay.—Lake and flake white, shaded with carmine; bistre and vermilion shaded with black.
Changeable Silk.—Red lead and masticot water, shaded with sap-green and verdigris.
Another.—Lake and yellow, shaded with lake and Prussian blue.