MICROSPIRA COMMA 551 



It is actively motile, especially in the comma stage 

 though the long spiral forms also possess this property. 



Grouping. As found in the slimy flakes in the intes- 

 tinal discharges from cholera patients, Koch likens its mode 



FIG. 88 



\- 



Microspira comma. Impression cover-slip from a colony thirty-four 

 hours old. 



of grouping to that seen in a school of small fish when 

 swimming up stream i. e., they all point in nearly the 



FIG. 89 



/;/ . 



^ < c <y -h 



, S / " ''*> 



( > ( > '<. 



- ^ '< v v 

 Involution-forms of microspira comma, as seen in old cultures. 



same direction, and lie in irregularly parallel, linear groups 

 that are formed by one comma being behind the other with- 

 out being attached to it. 

 On cover-slip preparations made from cultures in the 



