CLASSIFICATION OF THE STREPTOCOCCI OF HUMAN FECES

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Abstract
The streptococci of the feces (Streptococcus fecalis) are apparently constant in fermentative ability. Differentiations should be made only in media most favorable for growth. Results indicate 6 strains common to human stools: those fermenting (a) all sugars used (glucose, lactose, sucrose, salicin, maltose, mannitol, galactose); (b) all but sucrose; (c) all but sucrose and mannitol; (d) all but mannitol; (e) all but mannitol and salicin; (f) all but lactose. Serologically, strains (a) (c) and (d) resemble each other and give slight hemolysis. Strains (b), (e) and (f) give no hemolysis; of these, (b) and (f) resemble each other serologically, while (e) is distinct. There is little in the morphology of the streptococci of human feces to assist in differentiation.

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