Mercurial Plaster.
Take of common plaster, one pound; of gum ammoniac, strained, half a pound. Melt them together, and, when cooling, add eight ounces of quick-silver, previously extinguished by triture, with three ounces of hogs lard.
This plaster is recommended in pains of the limbs arising from a venereal cause. Indurations of the glands, and other violent tumours, are likewise found sometimes to yield to it.
William Buchan
Domestic Medicine 2nd edition 1785