The preparation used by so-called fire-eaters to make the skin resist the action of fire is strong solution of calcium chloride which would remain moist on the skin and protect it to some extent. The fire is obtained by burning a small quantity of the lightest naphtha. This rapidly dies out, and produces but little warmth. This naphtha is often poured on tow and ignited, but the flame at once dies out when placed inside the mouth.