In bruises, hot water is most efficacious, both by means of insertion and fomentation, in removing pain, and totally preventing discolouration and stiffness. It has the same effect after a blow. It should be applied as quickly as possible, and as hot as it can be borne. Insertion in hot water will cure that troublesome and painful thing called a whitlow. The efficacy of hot water in preventing the ill effects of fatigue is too well known to require notice.