PLEURO-PNEUMONIA IN SHEEP. 501 
be. cut with a knife in any direction, with the greatest 
ease, and if pressure were applied to the cut surfaces, or 
where the periosteum had been removed, blood would ooze 
from numerous points. In the interior of the bones, the 
cancelli were filled w r ith a red gelatinous substance. The 
ribs, the vertebrae, and indeed all the irregular and flat 
bones were in the same condition. The shafts of the long 
bones of the extremities w r ere not visibly increased in size : 
V * 
nor was the shell or compact structure much altered. The 
ends of these bones, however, w 7 ere enlarged and soft; and 
on making a section through them, in their long diameter, 
the medullary canal, and especially the cancelli near to their 
extremities, had a singular although not a uniform appear¬ 
ance. In some of them, the w hole of the interior w r as of a 
dark red colour, from congestion of the vessels and effusion 
of blood into the areolar interspaces. In others, one half 
only of the interior was in this state, the other part 
being filled with a peculiar fat, and consequently very 
pale in colour. It was at the end of the bone affected in 
this way that the articular cartilage was of a palish yellow 
colour, velvety to the feel, and also slightly greasy. Even 
the teeth did not escape the malady, one of their con¬ 
stituents being evidently affected, w 7 hich was evinced by 
the crusta-petrosa being much thicker and more spongy 
than natural. 
(To be continued .) 
PLEURO-PNEUMONIA IN SHEEP. 
By W. A. Cox, Sen., M.R.C.Y.S., Ashbourne. 
A disease of a very alarming character has devastated 
many of our flocks of sheep in this neighbourhood during 
the past spring. 1 first heard of it in March last. 
Symptoms .—The animal at first appears dull and drooping, 
with hanging of the ears and a dejected countenance; soon 
after a discharge shows itself at the nose, of an adhesive 
character, and about the consistence of the w r hite of an egg, 
which becomes darker in colour as the disease progresses. 
A painful cough is always present, with increased respiration, 
which in the last stage of the affection is attended with a 
grunt, and great distress is produced whenever the animal's 
sides are pressed. 
