PLEURO-PNEUMONIA IN COWS. 
619 
extravasated blood (about one quart), which had been poured 
out into the enveloping membranes. The kidneys were flabby, 
soft, and pale, and filled with glairy fluid. On examining the 
hind feet, I found that there was a perfect separation between 
the sensible and insensible laminae. Every organ seemed to be 
in a state of decay. The brain and spinal marrow I did not ex- 
amine. In both of these cases, although I gained apparent 
relief by the use of blisters, yet do I not feel satisfied whether 
they may not possibly have been the cause of the supervention 
of laminitis on the original disease. Although, at the same 
time, I may say, I felt certain from the nature and intensity 
of the post-mortem appearances, that even had laminitis not 
occurred, yet must the original disease have terminated in 
death. 
PLEURO-PNEUMONIA IN COWS— EXTRACTS FROM 
MY NOTE BOOK OF 1850-1. 
By R. H. Dyer, M.R.C.V.S., Waterford. 
Pleuro- Pneumonia in Cattle. 
In the month of June in the above year (1850), I was re- 
quested by a farmer and breeder to go into the country to inspect 
his stock, of which he said he had lost sixteen in number in 
“distemper.” They were chiefly milch cows, and in very fair 
condition. The weather was very sultry, and had been so for 
some time. I first examined the cows and heifers which were 
supposed to be free from disease : these were twenty-two in all. 
I could detect no symptom to lead me to infer they had been 
attacked ; but, in consequence of his severe loss, I recommended 
that each and everyone of them should have a seton introduced 
either in the dew-lap or between the front legs, to act as a 
counter-irritant, by way of prevention. This was readily as- 
sented to. I accordingly placed a seton in the breast of each 
cow, and directed that the tape should be dressed with ung. 
ves. once every day. 
Having completed the examination, &c. of the healthy stock, 
I proceeded to examine those diseased. I found the owner had 
wisely kept them at some distance from the others. The fol- 
lowing is the result of that inspection : — They were four in 
number, each one being about fifty yards from the other, and 
all lying down upon their right sides, with their heads turned 
towards their flanks, and appearing somewhat comatose. I 
