A NEW PASTEURELLOSE. 
335 
diffused congestion with petechia here and there, and specially 
on the summit of the folds. 
The small intestine contains a foaming liquid, white-yellow¬ 
ish in color ; its mucous is but little altered in appearance. 
The caecum is in the same condition. 
On the contrary, the floating colon is much altered ; its 
contents are mixed with great quantity of blood ; its mucous 
membrane is thick, easily torn ; Peyer’s patches are prominent, 
ulcerated or transformed into a kind of reddish pulp, sputtering 
under pressure ; the lesion, which extends all the length of the 
colon, is specially severe at its insertion on the caecum. 
The lymphatic glands are everywhere hypertrophied, infil¬ 
trated with reddish serosity, with small interstitial haemor¬ 
rhages ; but this lesion is specially developed on the glands of 
the mezzocolon. 
The urine is yellow, clear and very albuminous. 
The lungs are very much congested ; the third and fourth 
lobes of the right lung are positively cedematous, and on their 
surface the thick and reddish pleura is rough, and as if its 
epithelium was removed. 
An important fact to notice is that the umbilicus, the umbil¬ 
ical vein, the urachus and the hypogastric veins are entirely 
normal. It is thus certain that the calf was perfectly free from 
the disease, even free from the germ. 
The bacteriological study of the various diseases of this calf 
has given interesting results. 
The blood of the heart and of the spleen, the serosity of the 
pleura and that of the pericardium gave absolutely pure cultures 
of the inoculated pasteurella. 
The cultures with pulp of the liver gave, with the colonies 
of pasteurella, quite a number of others of coli bacilli or of para- 
coli. 
The pulp of the mesenteric glands gave a number of various 
colonies, at least equal to those of the pasteurella. 
Although the disease had progressed extremely fast, and 
although post-mortem had been made immediately after death, 
