Skimmed milk, ½ gallon; newly slacked lime, 6 oz.; and 4 oz. of poppy, linseed, or nut oil; and 5 lbs. Spanish white. Put the lime into an earthen vessel or clean bucket: and, having poured on it a sufficient quantity of milk to make it about the thickness of cream, add the oil in small quantities, a little at a time, stirring the mixture well. Then put in the rest of the milk, afterward the Spanish white finely powdered, or any other desired color. For out-door work add 2 oz. each more of oil and slacked lime, and 2 oz. of Burgundy pitch dissolved in the oil by a gentle heat.