A NEW PASTEURELLOSE. 
329 
Most often the disease lasts several clays (from 3 to 6 or 8 
days) ; it is characterized by an intense intestinal discharge ; 
the expelled matters are always diarrhoeic, white, foaming; the 
sick ones lose flesh rapidly ; their flanks are hollow, belly re¬ 
tracted, back arched, eyes hollowed in their orbits, coats dull 
and staring ; they make violent expulsive efforts and groan 
pitifully while making them ; the nose is hot and dry; there is 
little discharge of mucus from the nose ; the temperature is 
elevated, but towards the end falls back to normal and the ani¬ 
mals remain lying on the bed or on their faeces, unable to rise 
or even to stand up. 
Finally, at other times , not so commonly, however, the 
Symptoms are less severe and recovery takes place more or less 
rapidly ; but, as we have said before, this recovery is only in 
appearance, as most of the calves die several weeks later with 
the pulmonary form of the disease. 
Sometimes , also , other symptoms less frequent are observed, 
and yet they have a no less real importance. 
It is not rare to see, in cases with rapid march, the diarrhoea 
mixed with blood in various quantities. 
In slow forms it is not rare to observe acute, multiple and 
very painful arthritis appear, which prevents the animal from 
resting on the lame leg. When arthritis exists on several legs 
together, the animal cannot stand up ; he looks as if paralyzed. 
The lesions found at the autopsy vary according to the 
march of the disease. There is, however, one which is never 
missing ; it is that of the umbilicus and of the umbilical blood 
vessels. In all the calves affected with white scour that we 
have seen we have found an umbilicus, very large, with in¬ 
durated walls, containing a clot somewhat hard, at times soft 
and purulent; in all, also, we have observed bloody extravasa¬ 
tions, sometimes very extensive, along the umbilical vessels and 
the urachus, extending sometimes to the posterior third of the 
bladder. 
In rapidly progressing cases lesions of true haemorrhagic 
septicaemia are found ; all the organs are congested to excess ; 
