No. 1. Acetate of copper, or distilled verdigris.
2. Sulphate of copper, or blue vitriol.
3. Red nitrated quicksilver, red precipitate,
or nitric oxide of mercury.
4. Burnt alum.
5. Common verdigris.
The _mild_ require to be finely powdered and sprinkled on the ulcer; and
are sometimes mixed with digestive ointments to increase their power.