ALUM.
Is occasionally used internally in cases of supurgation, in the form of alum whey:—two drachms of pulverized alum being put into a pint of hot milk; yet there are much better astringents. Its principal use is external. A solution of 2 drachms to a pint of water makes alone, or with the addition of a small quantity of white vitriol, a very useful wash for cracked heels, grease and those forms of swelled legs, attended with moisture through the skin.