A bag of pounded ice placed over a hernial protrusion has caused its reduction; the cold lessens the volume of the contents of the gut, especially of the gases; it also stimulates peristalsis, and causes contraction of vessels.

Heat also is used for hernia by fomentation, or better, by the hot bath. It relieves pain, allays spasm of muscles, and so favors reduction: the taxis should be employed while the patient is in the hot bath, which should be continued until muscular relaxation is complete.