Hughes, 382 The plaster was underlaid with thick carbon black before the paint was applied in hues of white lead, Prussian blue, vermilion of mercury, and crystals of powdered glass, orpiment and iron oxides.
Hughes, 382 Like the other works in the series, the plaster was underlaid with thick carbon black before the paint was applied. The hues included white lead, Prussian blue, vermilion of mercury, and crystals of powdered glass, orpiment and iron oxides.