She knew that heat could relax muscles young patient soon got well. Some time later Sister Kenny saw Dr So she filled a pan with salt and placed it on the fire. She placed the warm salt on the McDonnell in person. She told him what she child's leg. But it did not seem to help. Next had done. He was shocked. Her treatment she tried a hot poultice. Its weight just went against all that the experts said about the crippling disease. But it had worked! Her seemed to add to the pain.