180 



LABORATORY EXERCISES IN BACTERIOLOGY. 



(C) Internal Structure of Colony (Microscopic) : 



1. Refraction weak, outline and surface of relief not strongly denned. 



2. Refraction strong, outline and surface of relief strongly denned; dense, not 

 filamentous colonies. 



FIG. 53. SHAPES OF COLONIES. (After Chester.'] 

 A. Cochleate. B. Ameboid. C. Rhizoid. F. Curled. 



General : 



Amorphous, without definite structure as below specified. 

 Hyaline, clear and colorless. 



Homogeneous, structure uniform throughout all parts of the colony. 

 Homochromous, colony uniform throughout in color. 



FIG. 54. SHAPES OF COLONIES. (After Chester.} 



D. Mycelioid. E. Filamentous. 







Granulations or Blotchings: 

 Finely granular. 

 Coarsely granular. 



Grumose, coarser than the preceding ; a clotted appearance ; particles in clustered 

 grains (Fig. 55, D). 



