Trochisks of Arsenick.
℞. White Arsenick four ounces, Corrosive
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℞. White Arsenick four ounces, Corrosive
Sublimatte half an ounce; powder both, and form them into Trochisks with the Muci∣lage of Gum Tragacanth.
These Trochisks are us'd as the former and being apply'd whole or in Powder to Corns consume and eat them away. The Arsenick contains a very corrosive Salt, which being envelop'd in a great quantity of Sulphur would disengage it self, but slowly without the addition of the corro∣sive Sublimate. Tho' this Compound is an extraordinary Caustick, yet it doth not cause great pain because the Sulphur of the Arsenick and Mucilage of the Gum do in a great measure curb the Salts, and check their motion, involving their points in the branchy parts of the one, and sli∣my roapy particles of the other.