CULTURAL CHARACTERS OF BACTERIA 



21 



Rhizoid, of an irregular branched, root-like character, as in Bad. 



mycoides. Fig. 10, C. 

 Conglomerate, an aggregate of colonies of similar size and form. 



Fig. 12, A. 

 Toruloid, an aggregate of colonies, like the budding of the yeast 



plant. Fig. 12, B. 

 Rosidate, shaped like a rosette. 

 B. Surface Elevation. 



1. General character of surface as a whole. 



Flat, thin, leafy, spreading over the surface. Fig. 8, A I. 



FlG. 9. Showing types of liquefaction in gelatin stab cultures. 

 1 crateriform, 2 napiform, 3 saccate, 4 infundibuliform, 5 stratiform. 



Effused, spread over the surface as a thin, veilly layer, more delicate 

 than the preceding. 



Raised, growth thick, with abrupt terraced edges. Fig. 8, A 2. 



Convex, surface the segment of a circle, but very flatly convex. 

 Fig. 8, A 3. 



Pulvittate, surface the segment of a circle, but decidedly convex. 

 Fig. 8, A 4. 



Capitate, surface hemispherical. Fig. 8, A 5. 

 2. Detailed characters of surface. 

 Smooth, surface even, without any of the following distinctive char- 

 acters. 



