MASTICOT, or YELLOW LEAD, is the calc or ashes of lead, gently calcined, by which it is changed to a yellow or lighter or deeper teint, according to the degree of calcination. Masticot is sometimes used by painters, and it serves medicinally as a drier in the composition of ointments or plasters. The masticot which is used by the Dutch as the ground of their glazing, is prepared by calcining a mixture of one hundred weight of clean sand, forty-four pounds of soda, fold with us under the name of barilla, and thirty pounds of pearl-ashes.