46 



A MANUAL OP BACTEEIOLOGY 



II, 



d. Topography of surface: smooth; contoured, svaoo^hlj 

 undulating, like the surface of a relief map ; rugose, 

 short, irregular folds due to shrinkage ; verrucose, 

 growth wartlike, with wartlike prominences. 



. Microscopic appearance. 



a. Edge of colony: entire (Fig. 25, A) ; undulate, wavy 

 (Fig. 25, B); repand(Fig. 25, C); lohate(Fig. 25, D); 



E F O 



Tig. 24. Types of surface elevation of bacterial colonies 



A, flat ; B, raised ; C, convex ; D, pulvinate ; E, capitate ; F, umbilicate ; 

 G, umbonate 



aurieulate (Fig. 25, E'); lacerate, irregularly cleft 

 (Fig. 25, -F) ; fimhricate, fringed (Fig. 25, (?) ; ciliate 

 (Fig. 25, H^ ; erase, irregularly toothed (Fig. 25, 7). 

 h. Internal structure : amorphous, no definite structure ; 

 finely granular ; coarsely granular ; grumose, appears 



Fig. 25. Types of margin of bacterial colonies 



A, entire ; B, undulate ; C, repand ; D, lobate ; E, aurieulate ; F, lacerate ; 

 G, fimbricate ; S, ciliate ; /, arose 



clotted (Fig. 26, B') ; gyrose, showing chinks or 



cracks (Fig. 26, E') ; reticulate, netted (Fig. 26, (?) ; 



filamentous ; floccose. 

 /3. Deep colonies. 

 a. Color. 

 h. Shape : punctiform, lanceolate, oval, circular, spindle 



shaped, irregular, branched, filamentous, 

 c. Translucency. 



