Fig. 85. 



The same particle of plague spleen in wheat as shown in Fig. 82. The 

 middle portion corresponds to the particle of plague spleen, surrounded by 

 remains of wheat. x 85. 



Fig. 86. 



Section through mesenteric gland of a sewer rat dead after feeding with 

 semi-dried plague organs. 



The light parts are filled with extravasated blood, the dark parts contain 

 masses of B. pestis filling the cortical and medullary sinuses. 



1. Two efferent lymph vessels in section filled with B. pestis ; there is 

 een at the hilum (2) an efferent lymph vessel filled with B. pestis, just 

 merging from the gland. 



1A. An afferent lymph vessel filled with B. pestis. x 45. 



