SPIRILLA RESEMBLING CHOLERA.

327

must frequently be made before the growth of a single
colony can be observed. To the naked eye the colonies

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 PfeifTer).

begin liquefaction of the gelatin, and by the second