A single drop of nitroglycerine, one per cent. solution, in half a glass of cold water. The careful inhalation of one or two drops of amyl-nitrite for three or four seconds, followed by complete rest for five minutes, is also recommended. Also, locally, Fletcher's carbolized resin, composed of resin, carbolic acid, and chloroform, which is a good styptic also; or, chloroform one part, and tincture of pyrethrum three parts.