63. Nut oil, an almost colorless, transparent oil, is expressed from the walnut. It dries more rapidly than linseed oil, and is, owing to its lack of color, used for white and other light paints. In the commoner grades of work, its cheapness commends it to use.

64. Poppy oil is colorless, and, in some instances, used for delicate work, where the time required for drying is not limited. For strength and durability it stands second to linseed oil. Poppy oil is, in some old books, spoken of as oil of pinks, and oil of carnations.