It sometimes happens that a carefully formulated description of an unfamiliar group of symptoms serves to arouse sufficient consideration to bring to light other similar or closely related instances. Cases grow in number, and as medical attention is focused on them, a condition which was infrequently recognized or diagnosed may lose its rarity and enter into the group of less exceptional diseases.
With these thoughts in mind we refer to Crohn's recent contribution to the subject of rat-bite fever,6 known in some of the foreign tongues as Rattenbiss-Krankheit or sokodu. This disease, best known in Japan, where it is recognized by the medical profession, occurs among the classes liable to be bitten by rats. The symptoms are incident to a bite and are followed after a variable incubation period by a single paroxysm or by regularly recurring paroxysms of chills, fever and sweats, lasting a few days, and associated