Warts

Warts, like chilblains, are too well known to require description. They chiefly attack the hands, and particularly the fingers, but sometimes occur on other portions of the body. They may be removed by rubbing or moistening their extremities every day, or every other day, with lunar caustic, nitric acid, concentrated acetic acid, or aromatic vinegar, care being taken not to wash the hands for some hours after. The first is an extremely convenient and manageable substance, from not being liable to drop or spread; but it produces a black stain, which remains till the cauterized surface peels off. The second produces a yellow stain, in depth proportioned to the strength of the acid employed. This also wears off after the lapse of a few days. The others scarcely discolor the skin.

Source: The Ladies’ Book Of Useful Information