350 
Pleiiro- Pneumonia amongst Cattle. 
the lung, presented a healthy appearance. The mucous membrane 
of the bronchial tubes offered a bluish-like redness, which be- 
came more marked in those situated in the diseased portion of 
the lung — indeed the latter contained some muco-purulent 
matter. 
Morbid appearances met with in one of the cows alluded to in 
Case 15: — 
The left cavity of the thorax contained a considerable portion of 
fluid, and its pleura exhibited extensive indications of disease ; the 
lung of the same side, and more especially the posterior lobe, from 
its base forwards, offered an immense volume, which contrasted 
strongly with that of the right lung, which was not diseased. The 
pleura of the posterior lobe was covered more or less with coagu- 
lated lymph, and was thickened and opaque throughout ; the 
anterior lobe of the same lung did not appear to be enlarged, at 
least when compared with the posterior lobe, but presented, on 
the contrary, a collapsed appearance. Nevertheless its pleura was 
the seat of thicker, rougher, and denser exudations than that of 
the posterior lobe. An incision made through a part in the pos- 
terior lobe, exhibited a surface analogous to that of which fig. 1 
offers a representation, but a section of it removed from near the 
base showed a different aspect, as represented by fig. 4. In this 
Fig. 4. 
c a 
a. Pleura slightly thickened. 
b. Hepatized pulmonary tissue, of a brownish-red colour. 
c. Thickened septa, of a whitish colour. 
d. Hepatized pulmonary tissue, of a greyish-red colour, interspersed witli light-grey spots. 
the lobules, in one part, as well as the intervening cellular tissue, 
were of a deep brownish red colour (b), in another the septa (c) 
were very thick, of a whitish colour, and the intervening tissue of 
a greyish brown colour {d), interspersed with white dots. The 
anterior lobe of the same lung was the seat of a morbid product, 
different from that which is ordinarily considered the result of 
inflammation : it occupied the lobules of the lungs, was of a solid 
structure, and of a whitish colour, and surrounded by pulmonary 
