But they are more frequently an accidental Disorder of the Skin, arising from some external Cause.

In this last Case, if they are very troublesome in Consequence of their great Size, their Situation or their long Standing, they may be destroyed, 1, by tying them closely with a Silk Thread, or with a strong flaxen one waxed. 2, By cutting them off with a sharp Scissars or a Bistory, and applying a Plaister of Diachylon, with the Gums, over the cut Wart, which brings on a small Suppuration that may destroy or dissolve the Root of the Wart: and, 3, By drying, or, as it were, withering them up by some moderately corroding Application, such as that of the milky Juice of [104] Purslain, of Fig-leaves, of Chelidonium (Swallow-wort) or of Spurge. But besides these corroding vegetable Milks being procurable only in Summer, People who have very delicate thin Skins should not make Use of them, as they may occasion a considerable and painful Swelling. Strong Vinegar, charged with as much common Salt as it will dissolve, is a very proper Application to them. A Plaister may also be composed from Sal Ammoniac and some Galbanum, which being kneaded up well together and applied, seldom fails of destroying them.

The most powerful Corrosives should never be used, without the Direction of a Surgeon; and even then it is full as prudent not to meddle with them, any more than with actual Cauteries. I have lately seen some very tedious and troublesome Disorders and Ulcerations of the Kidnies, ensue the Application of a corrosive Water, by the Advice of a Quack. Cutting them away is a more certain, a less painful, and a less dangerous Way of removing them.

Wens, if of a pretty considerable Size, and Duration, are incurable by any other Remedy, except Amputation.

Of Corns.

§ 493. The very general or only Causes of Corns, are Shoes either too hard and stiff, or too small.

The whole Cure consists in softening the Corns by repeated Washings and Soakings of the Feet in pretty hot Water; then in cutting them, when softened, with a Penknife or Scissars, without wounding the sound Parts (which are the more sensible, in Proportion as they are more extended than usual) and next in applying a Leaf of House-leek, of Ground-ivy, or of Purslain dipt in Vinegar, upon the Part. Instead of these Leaves, if any Person will give himself the little Trouble of dressing them every Day, he may apply a Plaister of simple Diachylon, or of Gum Ammoniacum softened in Vinegar.

The Increase or Return of Corns can only be prevented, by avoiding the Causes that produce them.

Chapter XXXI.