DISTOMA HEPATICUM INFESTING THE LUNGS OF CATTLE. 101 
I found some showing lesions which bear some resemblance 
to a certain stage of the lung plague. There is, therefore, a 
practical importance attaching to a description of these lesions? 
and there is, also, a scientific interest attaching to them, as I 
believe I am the first person to have discovered the distoma 
hepaticum in the lungs of cattle in America. 
On 4th of October, 1881, in examining the lungs of nine 
Texan cattle, I found three to be diseased; one was affected with 
interstitial pneumonia, and the section which was made through 
the diseased portion showed it to be not much over an inch in 
diameter, and the nodule which the diseased part formed was 
about the size of a walnut. 
In another lung a small space about the size already mentioned 
was the seat of hemorrhagic infection. The exuded material 
seemed to be liquifying and absorption to be taking place. 
A somewhat similar area in another lung had undergone 
fibroid degeneration. On the 5th of October I examined a* lung 
in which an area of about an inch and a half in diameter was the 
seat of fibrinous exudation. Six or seven small cavities about 
the size of a bean were exposed in making a section of the nodule. 
These cavities were filled with pus. 
In another lung an area of similar size was in a state of cheesy 
degeneration. This portion of lung was encysted, and calcareous 
degeneration was commencing in the contents of the cyst. 
In each of those cases the seat of disease was the anterior 
portion of the lung, and it seemed rather extraordinary that in 
each case the area should be so small. 
On the 20th November I examined the right lung of a Texan 
animal, and found near the base an induration about the size of 
a moderate sized apple, which extended nearly from the internal 
to the external face of the lung. One could see through the 
pleura on both surfaces of the nodule a black discoloration, which 
was irregularly distributed over the surface of the nodule and in 
the lung tissue adjoining it. The lung tissue in general and that 
adjoining the nodule were examined. The bronchial tubes were 
healthy up to the very margin of the nodule, but at different 
points in the lung, and especially in the vicinity of the nodule, 
