See Encycl.—The best black pitch is made of the refuse of rosin and turpentine, such as will not pass through the straw filter, and the cuttings around the incision on the tree. These materials are put into a boiler six or seven feet in circumference, and eight or ten high. Fuel is laid around the top, and the materials as they melt flow through a channel cut in the fire-place into a tub half filled with water. It is at that time very red, and almost liquid. To give this a proper consistence, it is put in a cauldron placed in a furnace, and boiled down in the same manner as rosin, but it requires much less precaution and double the time. It is then poured into moulds of earth, and forms the best kind of black pitch. See Rosin and Turpentine in this Suppl.

BASTARD PITCH, is a mixture of colophony, black pitch, and tar. They are boiled down together, and put into barrels of pine wood, forming, when the ingredients are mixed in equal portions, a substance of a very liquid consistence, called in France bray gras. If, on the contrary, it is desired of a thicker consistence, a greater proportion of colophony is added, and it is call in moulds. It is then called bastard pitch.