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SPIRILLA RESEMBLING CHOLERA.
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