incline, the color naturally seeks its level in the deepest part.
This is an admirable arrangement, and keeps colors entirely under control, the divisions keeping them apart.
It can be kept in a box, or covered, when not in use.
One or two palette knives will needful, to mix and grind colors. These come in a variety of shapes, sizes, and materials. They are made from ivory, bone, horn, and steel. One of the latter is necessary, and, provided it is kept immaculately clean and free from any possibility of rust, will prove all-sufficient. Rust is the oxide of iron (from which certain reds are made) ; and it will effectually ruin some colors, - blues for instance, - if incorporated with them.
Although this would be imperceptible at the
