188 
CONTRIBUTIONS TO THE PATHOLOGY AND 
in the lungs, containing brown-coloured matter, and which brown 
matter also existed in abundance in the bronchial tubes : the mu¬ 
cous membrane of the trachea was of a dull green—the tube itself 
contained frothy spume. The chest contained about four quarts 
of dirty brown liquid. The pleura costalis, for the depth of about 
10 or 12 inches at the inferior part, and on both sides, was of a 
dark dirty green aspect; the membrane easily sloughed from the 
ribs, and a liver-like surface was exposed. The heart was moderately 
firm in its texture, but pale ; both its ventricles contained por¬ 
tions of very dark blood in a semi-coagulated state—its valves and 
other appendages were blueish in appearance. The organ, when 
divested of other structures, weighed eight pounds and a half avoir¬ 
dupois. 
The serous membrane of the large veins, or rather the internal 
membrane of them, presented the same diseased appearance I 
have so fully described in Case I; only in this case the textures 
of the veins were, I think, firmer. The blue tint of the lining 
membrane of the heart was, without doubt, the effect of disease; 
it parted from its muscular bed very readily. 
Brain, fyc —The brain was much softer than natural; it felt to 
the touch like weak jelly; its lateral ventricles were free from 
exudation : the plexus choroides were pale and bloodless, and the 
medullary portion of the organ had a dirty appearance. 
MUSCULAR System. The muscles of animal life (and I exa¬ 
mined a great portion of them in a rough way) were all of them 
very pale in colour, and so greatly softened that I could readily 
break up their structure with my finger. I hung a portion of the 
serratus-magnus muscle in a place so as to expose it fully to the 
air, and in the course of sixteen or eighteen hours it began to 
emit a bad smell and present other signs of rapid putridity. 
Remarks. —In no work upon horse pathology that I am ac¬ 
quainted with will the veterinary student find a satisfactory 
account of typhoid pneumonia*. Blaine, in his “ Outlines of the 
Veterinary Art,” mentions the disease, but only in a very cursory 
mannert. Mr. Youatt is somewhat more copious; but what he 
says, strictly bearing upon the matter, consists entirely of a quota¬ 
tion which he gives from a communication sent to him by Mr. 
Percivall. Beyond these authorities, I am not aware of any thing 
else upon the subject. The reason why this disease has not met 
with that consideration it demands I conceive, perhaps, to be this: 
Typhoid pneumonia is always more or less prevalent during the 
* Now and then a case is recorded of it under the name of “ Malignant 
Epidemic.” 
j I am not aware of any writer who has regarded this disease in its true 
light: strictly speaking, it has no place in any veterinary work. 
