664 
REPORTS OF CASES. 
moval of these turbulent sores they would reappear like a blood- 
red fungus. On more than one occasion the skin of the ailing 
mule was abraded either during casting or by a nail or other 
foreign body, and within a few hours a mushroom-like growth 
would appear at the seat of injury. Finally, after exhausting 
all available resources with no beneficial results, the mule was 
destroyed on August 12, 1901. 
Post-mortem .—Six-year-old gelding mule, weight 1200 
pounds, very fat (no doubt partially due to a fatty metamor¬ 
phosis resulting from imperfect oxidation of tissues); external 
appearance, with the exception of above mentioned lesions, 
healthy. In removing the skin the swelling at the knee was 
accidently punctured and a fluid resembling synovia, but darker, 
gushed out ; the opening was made larger and about a double 
handful of various shaped bodies were removed, ranging in size 
from a small pea to a hazel-nut, of a pinkish red color, and 
mostly filled with fluid, all distinctly separate, the whole being 
enclosed in one large fibrous sac, which was prematurely punc¬ 
tured during skinning. Each external ulcer when removed 
with the integument left a cavity, which contained more or less 
cysts of various dimensions, which resembled very closely the 
pulp contained in a pomegranate. In various locations in* the 
fascia of the subcutaneous muscles were found cavities contain¬ 
ing these cysts, the muscle surrounding them showing evidence 
of localized inflammation. Beside the muscles and the carpal 
joint, the lungs and pancreas were the only other portions of 
the body that showed evidence of disease. Both lungs were 
very much enlarged, weighing 50 pounds ; they were normal 
in color except for a slightly mottled appearance of a pale yel¬ 
lowish hue. In passing the hand over the outside of the lung 
it felt as if the organ were filled with shot of various sizes. 
Upon section a large number of calcareous bodies peeled out; 
there were many cavities containing fluid and caseous material, 
and no doubt portions of parasites which were not visible upon 
a microscopical examination. All lobes of the lungs were af¬ 
fected ; the bronchial lymphatics were slightly enlarged, but 
the bronchial tubes, trachea and lining of the nasal cavities 
were normal. Wherever these cysts appeared there were signs 
of the results of inflammation, formation of white fibrous tissues, 
and myxomatous changes. The cyst formations in the pancreas 
varied in size from a pea to an orange, and in appearance the 
tissues did not differ from that of the lungs in. any of the essen¬ 
tials. 
