328 APPLICATION OF METHODS OF BACTERIOLOGY 



are commonly located in the material between the pus-cells; 

 very rarely they may be seen in the protoplasmic body of 

 the cell. (Compare the preparation with a similar one made 

 from the pus of gonorrhea. (See Fig. 69.) In what way do 

 the two preparations differ, the one from the other? 



After twenty-four hours in the incubator the plates will 

 be seen to be studded here and there with yellow or orange- 

 colored colonies, which are usually round, moist, and glis- 

 tening in their naked-eye appearances. When located in 



Fig. 

 A 



c 





Preparation from pus, showing pus-cells, A, and micrococci, C. 



the depths of the medium they are commonly seen to be 

 lozenge or whetstone in shape, while often they appear as 

 irregular stars with blunt points, and again as irregularly 

 lobulated dense masses. In structure they are conspicuous 

 for their density. Under the low objective they appear, 

 when on the surface, as coarsely granular, irregularly round 

 patches, with more or less ragged borders and a dark irreg- 

 ular central mass, which has somewhat the appearance of 

 masses of coarser clumps of the same material as that com- 



