11 



orange. The vessel walls themselves do not show any infiltration 

 with a material staining pink or orange ; hence a hyaline degenera- 

 tion of the vessel wall in the strict sense of the term is not demon- 

 strable. In fact, Van Gieson's stain is very well adapted to show 

 the good state of preservation of the eelluhir elements of the vessel 

 walls. 



Sections from the 12 cases with renal thrombosis were further 

 examined for amyloid. This was done because Duerck in his case 

 Xo. 16 observed amyloid in the renal sections. However, the 

 author does not attribute the presence of amyloid in this case to 

 the pest infection, but to other chronic causes of long standing. 

 We did not find amyloid material. 



The following is an abstracted description of the 31 cases of 

 human plague. A full description of 20 of these appeared in 

 Bulletin No. 23. In the present report we are concerned exclusively 

 with the presence or absence of hyaline thrombi and of bacterial 

 metastatic emboli in the renal tissue: 



GROUP I. PRIMARY UNCOMPLICATED BUBONIC PLAGUE. 



Case Xo. L Left Inguinal Bubo. 



(Necropsy Protocol No. 1009. Postmortem examination July 27, 11 o'clock a. m., 

 about eighteen hours after death, on the body of C. S., a male Chinese, 36 years 

 old, from 217 Santo Cristo. Died July 26 at 4 o'clock p. m.) 



A^iatomical diagnosis. — Hypertrophy of the heart ; congestion and fatty- 

 degeneration of the kidneys; fatty infiltration and degeneration of the 

 liver ; hemorrhagic inflammation and hypertrophy of the left inguinal, 

 femoral, iliac, and retroperitoneal glands; hypertropliy, softening and 

 congestion of the Ij'mph glands in general; multiple subserous and sub- 

 mucous hemorrhages. Bubonic plague. 



Microscopic cxamiiiation. — No hj^aline tlirombi in the glomerular capil- 

 laries or in any of the other renal vessels. 



Case No. 2. Right Inguinal Bubo. 



( .Xecropsy Protocol No. 989. T. C, a male Chinese, from Hang Hang Street, Sau 

 Nicolas, 29 years of age. Died June 20, 1904. Postmortem examination nine 

 hours after death.) 



Anatomic diagnosis. — Hemorrhagic left inguinal bubo; general lympha- 

 denitis; multiple hemorrhages into the serous and mucous membranes; 

 congestion and parenchymatous degeneration of the kidneys; congestion 

 and fatty degeneration of the liver; bubonic plague. 



Microscopic examination. — In a majority of lln' glomeruli the 

 capillaries are closed by hyaline fibrin tbrmnlii. wliile liere and 



liiere a Malpigbian tnft is eiitii'ely t'i'ee ami niiMn(( hided. The 



