THE ACTINOMYCETES, Vol. I 





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Figure 1. The first illustrat ion of ;iii ;icl iiKiuiNcct v ever pulilisluMl, Strcplollirix Fdcrshri (Reproduced 

 from: Cohii, F. Uiitorsuchiiiifien iil)er Bacterieii II. Beitr. Biol. Pfiaiizeu 1: 141-207, 1875). 



organism foiiiul in concretions of the iachiy- 

 nial ducts and which he named Sireptothrix 

 Foersteri. The concretions were transmitted 

 to Cohn by Foerster for microscopic exami- 



nation. Cohn says: "On April 15, 1874, he 

 transmitted to me a mass which was whitish, 

 Hke tallow, easily broken down and still 

 consisting of fine, very thin colorless branch- 



