1st It is demostrated that erysipelas is produced by a diplostreptococus, with all the characteristics of a pneumococcus; 2rd The streptococcus and the pneumococcus are mutable variety of the same germ; 3rd The use of pneumo Haptinógeno constitute the essential and specific Biological therapy, in the treatment of erysipelas; 4th The erysipelas in accordance with our ‘ therapy, is an infectious disease which we may classify as benign.Facultad de Ciencias Médicas