CLASSIFICATION OF THE BACTERIA. 97 
M. gregarium, Cohn. 
Unique species found on the surface of a putrefying 
infusion. 
g. Cladothriz, Cohn. 
Filaments in form of leptothriz, very slender, color- 
less, not articulated, rigid or a little undulating, falsely 
dichotomous. 
Cl. dichotoma, Cohn. In foul water. 
g. Streptothriz, Cohn. 
Filaments in form of leptothriz, very slender, color- 
less, not articulated, straight or slightly spiral, a little 
branched. 
Str. Fersteri, Cohn. 
In concretions in the lachrymal canal of man. 
