CH. XII] PATHOGENIC BACILLI: GROUP C 



249 



then in methyl blue show the nuclei of the tissue and of the 

 leucocytes blue, the bacilli bright red. 



Fig. 90.— From a Section through the Lung of a Mouse dead of Koch's 

 Septicemia. 



r Small vessel filled with blood ; the white blood-corpuscles are filled with very 



rtiinute bacilli. 

 2 Interalveolar tissue : in it a white corpuscle filled with the bacilli. Magnifying 



power 700. 

 3. A white blood-corpuscle more highly magnified, 1000. 

 (Stained with magenta.) 



Cultivations of the heart's blood or of the juice of the 

 viscera yield numerous colonies ■ pure cultivation in gela- 

 tine in test tubes can be made without difficulty directly 



Fig. 91. — From a Section through the Small Intestine of a Mouse dead 



OF SEPTlC-EMtA. 



The figure represents a section through a small vein in the submucous tissue, filled 

 with blood. At i, there is a homogeneous substance and in it numerous bacilli, 

 but these bacilli are much larger than the bacilli of Koch's septicsemia in the 

 mouse. 

 Magnifying power about 700. {Stained with methylene blue and vesuvin.) 



from the heart's blood. The colonies in plate cultivations 

 appear after two or three days as highly translucent, gela- 



