PATHOGENIC BACTERIA. 



mobile. They then loosen themselves, and are finally lost. Found 

 only in freshly drawn blood. 



3d. Crescent-shaped bodies. These are cylindrical and usually 

 bent sickle-shape. In the centre a black spot formed of little 

 granules. Not motile. 



4th. Eosette bodies. Regularly outlined with a collection of 

 pigment-granules in the centre. The rosette afterwards divides 

 and separates into segments. 



5th. AVhite blood-corpuscles containing melanin, whrch they 

 have digested. 



FIG. 77. 



O 



Extra-corpuscular. 



Intro-corpuscular. 

 VARIOUS FORMS OP PLASMODIA. 



CuUiration of these organisms has not yet been attained. 



Staining and Examination of Blood. Take the blood of a per 

 son subject to malarial fevers, just before a paroxysm. Having 

 first carefully cleansed the finger, a ligature is applied, and the 



