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renal vessels^, much dilated and engorged. Hyaline fibrin thrombi 

 are fomid in few of the glomeruli. The thrombosis of the glom- 

 endus is as a rule not complete and only a part of the tuft is closed 

 by fibrin. The thrombi are sometimes continued into the vasa 

 afferentia and eff erentia and beyond them. The capsular epitheliimi 

 shows a minor degree of degenerative, but no proliferative, change. 

 The tubular epithelium is in a state of cloudy swelling and fatty 

 degeneration. These degenerative processes are more marked in 

 the convoluted than in the straight tubules. Most of the uriniferous 

 canaliculi contain an abundance of granular material, while others 

 have casts. Sections from the kidneys show an extensive infection 

 with plague bacilli, which is mostly localized in the glomerular 

 capillaries. Both in the open and in the thrombosed capillaries 

 numerous bacilli may be seen in loose groups or sometimes even 

 in dense masses. In the thrombosed vessels the bacilli are some- 

 times between the thrombus and the vessel wall. The organisms 

 occasionally extend beyond the glomerulus into the vasa recta. Here 

 and there bacilli are found at quite a distance from a glomerulus 

 and occasionally in the capsular space and in the uriniferous 

 tubules. Liver: The interacinous tissue shows small, round-cell, 

 inflammatory foci and increase of the fibrous connective tissue. 

 The portal and hepatic veins and the interlobular capillaries are 

 dilated and engorged, showing a somewhat increased number of 

 leucoc}i;es. The parenchjona cells are very coarsely vacuolated and 

 contain much bile pigment. Here and there plague bacilli are 

 found in the capillaries; they appear in larger, denser groups 

 near the central vein of the lobule and near the interlobular inflam- 

 matory foci. Where the bacilli are present extensivel}', there are 

 seen cells with one, two, or three nuclei with many bacilli included 

 in their protoplasm. These phagocytic cells appear to be vascular 

 or lymphatic endothelial cells. Lungs : All vessels, including the 

 interalveolar capillaries, are much dilated and engorged. The 

 alveoli are partly or completely filled vdth a granular, or almost 

 homogeneous, eosin-staining material; they also contain quite a 

 few desquamated, pigment-filled epithelial cells. Here and there 

 extravasated blood is found in the air spaces. Fibrin is not visible 

 in the pulmonary sections, nor are plague bacilli found. Stomach : 

 The interglandular capillaries of the mucosa are greatly dilated, 

 and free blood is observed between the glands. Towards the surface 

 of the mucosa the hemorrhagic areas become larger. The most 



