Fig. 87. 



Section through the hemorrhagic patch of the ileum of a guinea-pig 

 dead of subacute plague. The figure shows the mucosa and part of the 

 submucosa ; on the top of the mucosa is a mass of blood-clot pervaded by 

 B. pestis (dark). The villi and the rest of the mucosa are crowded with 

 B. pestis (dark). x 65. 



Fig. 88. 



Section through the same portion of the ileum at its mesenteric attach- 

 ment, shown in the lower part of the figure. In this attachment are seen 

 (about the middle) two blood-vessels in section filled with blood ; in the upper 

 left and lower right of the mesentery are chyle vessels filled with B. 

 pestis. x 30. 



Fig. 89. 



A villus of Fig. 87, showing copious absorption of B. pestis (dark). The 

 epithelium of the surface of the villus is detached both on right and left 

 x300. 



