Fig. 9. 



Stained film of blood of a guinea-pig dead of plague after inoculation with 

 B. pestis. Bipolar plague bacilli amongst blood discs. x 1000. 



Fig. 10. 



Stained film of the blood of another guinea-pig dead of inoculated 

 plague. x 1000. 



Fig. 11. 



Stained film of blood of a mouse dead of acute plague after 

 cutaneous inoculation. x 1000. 



