GANGRENOUS CORYZA IN THE OX. 
567 
softness was general. The bladder was a little inflamed — the kid- 
neys and other intestines of the abdomen were almost in their natural 
state. There was nothing particular about the heart — the lungs 
were a little inflamed, and were gorged with black blood — the 
mucous membrane of the tracheal artery was inflamed, and more 
intensely so towards the superior part of that organ ; but the prin- 
cipal disease was found in the head. 
The edges of the tongue were ulcerated, — a more intense inflam- 
mation, accompanied by gangrenous patches, was perceptible in 
the back of the mouth, — the mucous membrane had, in a manner, 
changed its nature, it was twice, and often three times, as thick 
as when in its natural state ; the whole extent of it was ulcerated, 
and was of a livid hue, with here and there black patches of 
different sizes. These ulcers yielded a bloody ichorous matter 
mingled with the mucus, and which the membrane could no longer 
secrete. This membrane was no longer rudimented in the sinus ; 
it had begun to develope its cavities, and even in them we could 
perceive traces of gangrene. 
We frequently met with effusions, of a gelatinous form and 
colour, in the maxillary sinus. The whole extent of the pituitary 
was torn with the greatest ease, as were the leaves of the ethmoid 
bone. They partook of the general decomposition. The lachry- 
mal duct was inflamed, and ulcerated all over, — the nasal partition 
was softened and decomposed, almost as badly as it is in the worst 
stages of glanders, — the brain was thoroughly soft, all its mem- 
branes were much inflamed, and had here and there black patches ; 
the dura-mater, however, was sometimes exempt ; the inferior parts 
of the brain were most frequently black, and the ventricles were 
full of a brown liquid. 
I once found in an animal which died after four days’ illness, and 
which I opened eight hours after death, almost the whole of the 
brain black ; the peduncles and the cylindrical protuberance of the 
brain alone seemed to be whole ; all the rest was black and sur- 
rounded by a purulent fluid, and with so little consistency, that 
when it was shaken in the cranium it resembled a black and 
clotted pap. 
The whole length of the spinal marrow is, when compared to 
the brain, but very little disordered. I have found it a little 
softened, and the membrane which envelops it much inflamed. 
The rachidian prolongation is likewise less consistent than in its 
natural state ; the optic nerves are usually healthy. Once only I 
saw them softened and of a deep grey colour. The retina, in this 
case was torn with greater facility than usual ; the eyes alone 
presented a very great thickness of the aqueous humour, which 
