20 
ON THE DISEASES OF DOGS. 
similar to those of epilepsy. Animals thus attacked rarely reco- 
ver, or, if they do, chorea to a certain degree remains. 
Anatomical characteristics . — In a disease susceptible of such 
various complications, we cannot be astonished at the numerous 
and varied pathological alterations which post-mortem examinations 
bring under our notice. We will endeavour to distinguish them 
from each other; to point out those which are peculiar to a simple 
state of the disease, and those appertaining to each of the divers 
complications. Inflammation of the nasal mucous membrane is the 
chief and most constant alteration observable in this disease, pro- 
perly so called. It is of a reddish violet hue, ulcerated, and 
almost destroyed in some places. All the windings of the nasal 
cavities are filled with a clotted discharge, often of a purulent and 
sanious character. The pathological alterations of the eye and its 
appurtenances in cases of complication with ophthalmia may be 
observed while the animal is still alive. In cases complicated 
with gastritis and entero-gastritis, the stomach is either contracted 
on itself, or distended with yellow or greenish viscous matter ; 
worms are also frequently found. Its internal membrane offeiu 
traces of slight phlogosis, particularly in the vicinity of the smalr 
intestines, which themselves present similar appearances, and are 
found to be corded or meteorised. Sometimes the intestines are 
found to be red, thickened, and plastered with mucus. There is sel- 
dom much matter in the large intestines, and the excrements which 
exist are clotted and brown. A complication of cerebral affections 
is often attended with remarkable alterations ; the meninges are 
tumefied and injected, especially towards the inferior portion of 
the encephalon. Serous or sero-sanguineous congestion is found in 
the meninges ; the encephalon is softened, the ventricles full of 
serosity ; the plexus choroides and all the vascular parts gorged ; 
and the veins appearing as if injected. The rachis, especially 
about the lumbar region, is immersed in a serous fluid, which is 
effused in its membranous cavity. The medullary substance is 
softened. When the complication is with bronchitis or pneumonia, 
the characteristic alterations are, redness of the mucous membranes 
of the bronchia, and hepatization of the lungs; the pleurae are 
frequently in their natural state, but they sometimes present traces of 
slight phlogosis. The interior of the nose, the tracheal artery, and 
the bronchise, are plastered with a mucus so thick as to resemble 
a crust. The lungs are occasionally heavy, softened, and cedema- 
tized, but not generally. The diseased lobes are of a dark brown 
hue, and preserve the impression of the finger. When cut into, a 
greyish slightly purulent fluid escapes. Occasionally the lungs are 
tuberculated, and abscesses are formed in them. 
When the liver has been injured during life, it is sometimes 
