A NEW PASTEURELLOSE. 
327 
To Sir Plunkett , Vice-President , .* 
Sir :—Allow me before leaving Dublin to report to you, at 
least briefly, the results of my short but laborious campaign that 
with the precious assistance of Prof. Mettam, Colonel Steel and 
Mr. Ryan, I have just carried out in the southwest of Ireland. 
/.—First of all, allow me to say, that we have been able to 
establish the close relation that existed between “white scour” 
and the u lung disease.” 
White scour appears early after birth and kills calves in a 
few days ; the evolution of the lung disease is much slower ; the 
sick do not die much before the eighth week. Besides this 
the symptoms presented by the sick animals and the lesions ob¬ 
served at the post-mortems are very different, in such a way that 
one would be tempted to believe that the diseases have nothing 
in common and that they are entirely distinct one from the othei. 
However, it was known that the lung disease appears only 
where white scour has prevailed, and interested farmers have 
observed that calves that have recovered from a mild attack of 
white scour are, so to speak, condemned for the majority of them 
to contract the lung disease. 
The post-mortems that we have made during our inquest show 
the correctness of this opinion. 
Although lung disease is rare in April,* we hadjthe opportun¬ 
ity to observe one of the most characteristic cases, in a six weeks 
calf, which a few days after birth had had a temporary diarrhoea 
and which since had shown no other symptoms except’a lack in 
general condition, some cough and labored breathing. The 
owner said he had lung disease. (In three years he had lost 
more than ioo calves, and he knew, by long and sad experience, 
that the few subjects that seemed recovered from white scour die 
of lung disease when they are about two months old.) The ani¬ 
mal was killed ; he had an enormous pulmonary lesion ; the two 
posterior thirds of the left lung formed a compact mass, very 
heavy ; on its surface, which was here and there bosselated and 
fluctuating, the pleura was thickened, covered witli vegetations 
* The month when the investigation was made. 
