Externally, it is a very useful agent in various skin diseases, both parasitic and non-parasitic; for this the official ointment may be used, or if used on a large surface on dogs it should be diluted with an equal amount of zinc ointment.
PLUMBI OXIDUM—LEAD OXIDE
Derivation.—Made by roasting lead in the air.
Properties.—A heavy, yellowish or reddish-yellow powder, or minute scales, without odor or taste. Almost insoluble in water; insoluble in alcohol. Lead oxide is only valuable for its preparations.
PREPARATIONS
PLUMBI ACETAS—LEAD ACETATE—SUGAR OF LEAD
Derivation.—Heat lead oxide in acetic acid and water. Lead acetate crystallizes on cooling.
Properties.—Colorless, shining, transparent; monoclinic prisms or plates, or heavy, white crystalline masses, or granular crystals, having a faintly acetous odor and a sweetish, astringent, afterwards metallic taste. Efflorescent and absorbing carbon dioxide on exposure to the air. Soluble in two parts of water and in thirty parts of alcohol.
Dose.—Horses and cattle, 1⁄2 to 1 dr.; sheep and pigs, 15 to 20 gr.; dogs, 1 to 2 gr. Given in capsule or solution.