vegetable black การใช้

• These were originally made of canvas and treated with linseed oil and vegetable black to weather-proof them.
• The ordinary pigments are white lead, zinc white, umbers, siennas, ochres, chromes, Venetian red, Indian red, lampblack, bone black, vegetable black, ultramarine, Prussian blue, vermilion, red lead, oxide of iron, lakes and Vandyke brown.