Put half a bushel of unslacked lime in a barrel; cover it with hot water; stir occasionally, and keep the vessel well covered. When slacked, strain into another barrel through a sieve. Put a pound of glue in a glue-pot; melt it over a slow fire until dissolved. Soak the glue in cold water before putting the pot over the fire. Dissolve a peck of salt in boiling water. Make a thin paste of three pounds of ground rice boiled half an hour. Stir to this half a pound of Spanish whiting. Now add the rice paste to the lime; stir it in well; then the glue; mix well; cover the barrel, and let it stand twenty-four hours. When ready to use, it should be put on hot. It makes a durable wash for outside walls, planks, etc., and may be colored. Spanish brown will make it red or pink, according to the quantity used. A delicate tinge of this is very pretty for inside walls. Lampblack in small quantities will make slate color. Finely pulverized clay mixed with Spanish brown, makes lilac. Yellow chrome or yellow ochre makes yellow. Green must not be used; lime destroys the color, and makes the whitewash peel.