PURPURA HEMORRHAGICA IN THE OX. 
387 
Having so recently attended the animal for the intestinal 
lesion, I suspected the hemorrhage arose from the walls of a 
secondary abscess ; and entertaining but little hope of his 
recovery, he was immediately destroyed, by making a deep 
incision near the side of the sternum, in a direction towards 
the anterior aorta, when the vital fluid gushed out presenting 
an unnatural serous aspect, as if its qualities were consider- 
ably vitiated. Soon finding its way in the descent, it showed 
a very faint disposition to coagulate, staining the hands with 
only a weak trace of redness. 
The common integument was next removed, the inner 
surface of which was thickly speckled with florid extrava- 
sations, corresponding with similar ones in the subcutaneous 
areolar tissue, these varying from the size of a split pea to 
half the diameter thereof. The hind quarters had more of 
these spots than the fore ones, some of which were arranged 
in clusters, whilst others were systematically placed at about 
an inch apart. On the parietes of the abdomen being divided 
the digestive viscera became visible. Their somewhat pel- 
lucid envelopes beautifully pointed out the nature of the 
malady. Small sanious deposits, or petechiae, were every- 
where dispersed over the glib surface, these being particularly 
thick and having a linear arrangement on the great curva- 
ture of the rumen ; the maniplus was less affected. On 
arriving at the abomasum, its external coat was seen to put 
on the same aspect as the neighbouring organs, and on making 
a longitudinal incision through its coats their thickened con- 
dition became apparent, arising from the copious effusion of 
a fibro-serous material into the submucous membrane. Its 
mucous coat was densely studded with petechiae of a bright 
red colour, about half an inch distant from each other, and 
of a smaller size than those on the exterior part of the organ. 
At this point, the ingesta first became tinctured with blood,, 
giving to it a dirt-coloured look when contrasted with the 
green shade of the contents of the maniplus. The small in- 
testines were beset with marks on their external coat, which 
were less observable in the colon and rectum. The loose 
areolar tissue at some short distance from the anus was 
thickened, and on making an incision into the part, exit was 
given to about an ounce of healthy looking pus, which was 
bounded by a well-defined limiting membrane, connected 
with which was a fibrous cord leading to a small concavity 
situated on the superior part of the rectum, evidently the 
cicatrix of a repaired injury. 
The peritoneum also bore marks of the disease ; the extra- 
vasation becoming exceedingly vivid on the adipose deposit 
