416 UNIVERSITY OF VIRGINIA PUBLICATIONS 



The cavity occupied two-thirds of the lower lobe on the ventral and inferior sides. 

 On section the cavity had smooth lining and contained pus and semi-caseous yellow- 

 ish material. The consolidated lung was of a dark red color, not crepitant, rather 

 dry with very little excess of mucus in the bronchi. The bronchi were injected, the 

 bronchial lymph glands greatly enlarged, red and soft. The right lung was also adher- 

 ent to the diaphragm and pericardium and to the ventral surface of chest wall. There 

 were several abscesses varying from 5 to 8 cm. in diameter in the lower lobe, the 

 consolidated portions resembling the left lung. 



Heart. The pericardial and epicardial fat was absent. The surfaces were smooth 

 and glistening. On the anterior (ventral) surface were a few ecchymoses. The 

 valves were clear and delicate, the endocardium clear, the myocardium pale grayish 

 brown, opaque. Just below the larnyrx several Oestrus larvae were found crawling 

 around the trachea, which was markedly injected. The mouth was clear, the incisor 

 teeth were loose and twice as long as normal. Nares. The nose was covered with 

 mud. On longitudinal section of the head the mucous membrane over the turbinated 

 bones, septum, etc., was intensely engorged, dark red in color, ecchymotic and covered 

 with thick muco-pus. Great numbers of small Oestrus larvae were found crawling 

 over the mucous membranes as high as the ethmoidal turbinates. Brain and spinal 

 cord presented no abnormality. 



Microscopic report. The heart cells were granular, the cross striations not dis- 

 tinct. No sarcocysts were found. Lung. Sections from several parts of lungs showed 

 areas of bronchopneumonia with abscess formation. The pleura was considerably 

 thickened, showing granulation tissue together with large pink mononucleated cells, 

 lymphocytes and polymorphonuclear leukocytes. In a section through the edge of 

 an abscess, the necrotic tissue in the center presented the appearance of a homoge- 

 neous debris; passing out from the center there were zones of inflammation becoming 

 less intense to almost normal lung tissue. In the zones of inflammation the predomi- 

 nating cells were large, mononucleated cells with bright pink granular cytoplasm, 

 together with numerous lymphocytes and polymorphonuclear leukocytes. The 

 distribution of the exudate in the lung alveoli was irregular, some alveoli being 

 plugged with exudate, others empty. Desquamated cells and debris appeared in 

 the lumina of the bronchi. Spleen, capsule not thickened, malpighian bodies visible 

 but not conspicuous, showing evidence of hyperplasia in the centers; the pulp con- 

 gested, it being difficult to distinguish sinuses from pulp. In the pulp were found 

 many red cells and fragments of red cells together with large endothelioid cells which 

 frequently were more or less tinged with blood pigment. A few cells resembling 

 nucleated reds but not positively identifiable were seen in the pulp. Liver, the cells 

 and cell columns were separated, the cells being swollen and vacuolated as if from 

 post-mortem change. Kidney, the epithelium lining the tubules was extremely gran- 

 ular, cloudy and rather vacuolated. Lymph gland, capsule appeared rather edema- 

 tous, the peripheral sinus only faintly seen. Cell nests not separated from cell col- 

 umns. The striking feature of the lymph gland was that the periphery of the gland 

 was densely packed with lymphoid cells while the central portions were especially 

 marked by dilated sinuses partly filled with what appeared to be free cells. The cells 

 in the peripheral region varied from small lymphoid cells to large mononuclears, the 

 former predominating. Some of the larger cells had a bright pink non-granular 

 cytoplasm. The dilated sinuses were moderately well filled with large desquamated 

 endothelial cells with vacuolated or pink cytoplasm together with fairly abundant 



