Abstract 1. 1. The mycelium and spores isolated from the submaxillary lesions in a series of violin students and from the chin rests of their violins was a sporotrix. 2. 2. Hay infusion media gave the best results of the five media used. 3. 3. Rats showed no illness, but typical organisms were recovered from the liver and spleen of inoculated animals. 4. 4. The assumption is justified that the chin rests of the violins of infected players served as a vector in the transmission of this disease to others who played upon the same instrument.