Toward the end first mentioned--namely, the limitation of hyperemia--we may adopt local and general measures. Local measures include graduated pressure, providing this is not intolerable to the patient, so equalized that outside of the vessels it shall equal that inside. This may be done by careful bandaging, extreme care being taken that the pressure be applied from the very extremity of the limb; otherwise, passive exudation might be augmented and gangrene be precipitated. Elevation of a limb will often accomplish the same purpose. Cold, which is in effect an astringent and which tends to contract bloodvessels, is another measure in the same direction, and if applied early will do much to limit the degree of the attack. This may be applied as dry or moist cold, and should be gradually mitigated as the congestion subsides. It acts through the vasomotor system, and is a measure to be resorted to with caution. An efficient way of applying dry cold can be extemporized by a few yards of rubber tubing, held in place by wire or sewed in place to a piece of cloth, through which a stream of cold water is permitted to pass. Heat is another efficient means, acting, however, in a rather different way. Heat is a measure to be employed to hasten the disappearance of exudation--in other words to quicken resorption, which it does by equalizing blood pressure, dilating the capillaries, stimulating the lymphatic current, and in every way helping to clear the tissues of that which has left the bloodvessels.