The relief given by the acid spray in erysipelas by Dr. Hewson and Mr. Pairman has been already noted, but the internal use of the remedy may be well conjoined with the external. In the case of an infant living under unhealthy conditions, and in whom a severe attack of the idiopathic malady affected one arm and leg, the pudenda and head, and when iron had no control over it, the internal use of sulphurous acid seemed the cause of improvement which very quickly followed.