THE INFLUENZA OF 1836. 1 2d 
the bronchial tubes may be traced, and their lining membrane 
found in union with a dirty reddish or yellow lymph, by which 
they are filled up. In those places where the inflammation has 
not proceeded so far, the membrane is distinct, and intensely in- 
flamed or gangrenous, covered with bloody pus. When the 
horse lingers, which he frequently does, the inflammation being 
intense, but not extensive, the lungs are tuberculated, studded 
with tubercles in different stages of their progress to suppura- 
tion, and of different sizes. Sometimes no tubercles are to be 
found ; the lung is black, soft, short, the finger makes a cavity 
in its substance, and that cavity fills immediately with pus and 
blood ; the air-tubes are full of lymph, the bloodvessels are full 
of coagulated blood ; perhaps the pus comes from very minute 
branches, not seen by the naked eye. The heart contains thick 
black semi-fluid blood on both sides, and a little is found in the 
aorta. The brain I have never examined. The state of the 
lungs almost forbids further inquiry. 
Regarding the seat of the disease, there cannot, surely, be any 
dispute ; any man who has taken the trouble to examine the 
body with care, that is, by slitting up the tubes, knows what to 
think. I have been at dissections where the seat of the disease 
was supposed to be in the head, the liver, the bowels, every 
place but the bronchi : the lungs were pulled out by an as- 
sistant, and thrown aside untouched, with the remark “slightly 
congested but when these same lungs were cut up, the bron- 
chial membrane, and the contents of the bronchi brought to 
view, a single word was superfluous, — the ravages of disease 
were revealed in language stronger than description can use. 
When a man wants to discover the seat of an unknown disease, 
he must look at all parts ; he should put off his coat and exa- 
mine the body himself, shutting his assistants on the outside of 
the door till he has done. A veterinarian, to be a good practi- 
tioner, should be a working man. 
The inflammation of the bronchial membrane sufficiently ac- 
counts for the state of the blood. The membrane by which it 
should be purified is unfit to perform its function; and the 
blood passes through the lungs little altered. The extreme de- 
bility, the torpid state of the muscles, of the bowels, of every 
part, the diminution of sensation, organic and animal, the ab- 
sence of pain, the comparative tranquillity of respiration, and 
coolness of the skin, are all to be attributed to the state of the 
blood. Defecation does not take place, and the muscles cannot 
contract, the nerves cannot feel, and the glands cannot secrete. 
To the symptoms produced by impure blood add those that 
would accompany an equal degree of inflammation in any other 
