SPIRILLA RESEMBLING CHOLERA. 327 



must frequently be made before the growth of a single 

 colony can be observed. To the naked eye the colqnies 



x_ ^ > ^^ J9* k* * 



"W4cgg? 



-^i^_. iNN, Tmi V 



FIG. 84. Spirillum of Finkler and Prior, from an agar-agar culture ; x 1000 

 (Itzerott and Niemann). 



appear as small white points in the depths of the gelatin 

 (Fig. 85). They, however, rapidly reach the surface, 



FIG. 85. Spirillum of Finkler and Prior: colony twenty-four hours old, as 

 seen upon a gelatin plate; x 100 (Frankel and Pfeiffer). 



begin liquefaction of the gelatin, and by the second 



