ORPIMENT • FREE-TRANSLATOR.COM • Definition of Orpiment

... paint a portrait, where short time and few sittings are the conditions, to paint a lasting work. He is obliged to hasten the drying of the paint, or to use injurious substances, which answer the purpose only for a short present. Sir Joshua, too, was tempted to use orpiment largely in some pictures, which has sadly changed. An instance may be seen in the "Holy Family" in our National Gallery—the colour of the flesh of the St John is ruined from this cause. It is, however, one of his worst pictures, and could not have ...

— Blackwood's Edinburgh Magazine, Vol. 53, No. 331, May, 1843 • Various