Procure at a common colour shop, a quantity of what is called by the house-painters, flatting, which is white lead, ground with a large proportion of spirits of turpentine. Stir a small quantity of strong drying oil well among it, then take as much as will do for present use, and mix it to a proper consistance with spirits of turpentine, and lay on the pannel with a brush, and leave the brush marks the same way with the grain of the wood: when dry, in a day or two, take some of the stiff colour, and plaster it all over with a palette knife, and take it off again as clean as possible with the knife, and sufficient is left to fill up the pores of the wood and marks of the brush; this, repeated two or three times, leaves a most beautiful face, and very hard, and will never crack or separate from the wood whilst it endures. ,