BROWNS.—1. Cullen's earth is a fine dark brown. After six or eight of the simple crayons are prepared, several rich compound tints may be produced from it by a mixture with carmine in various degrees. Black, carmine, and this colour, mixed together, make useful tints for painting hair; several gradations may be produced
from each of these by a mixture with whiting. Roman Crayon Painting. Whiting is an excellent colour, either simple or compounded with carmine. Whiting tinged in several degrees with either of these, will prove very serviceable in painting. 2. Umber may be treated in just the same manner, only it is necessary to levigate it with spirit of wine.