Lunar Caustic; or Nitrate of Silver, is an excellent remedy in erysipelas when applied in solution (one drachm of the salt to one ounce of water), which should be brushed all over the inflamed part, and for an inch beyond it. This blackens the skin, but it soon peels off. To destroy warts, proud flesh, and unhealthy edges of ulcers, &c., it is invaluable; and as an application to bed sores, pencilled over with a solution of the same strength, and in the same manner as for erysipelas. _Caution_.--It is a poison.