Feels as though the air was passing over her toes, and the part of the foot right under them swells and Is sore. ... For the foot trouble, try soaking them in a bowl of water, to which has been added a teaspoonful acetate of zinc. ... In my opinion the poison of gangrene has circulated too long In the system, so that cutting arm would not save. ... Remove and saturate in equal parts Ecthol and Listerine.