100 
EDITORIAL. 
the National Live Stock Journal , (in its weekly edition of Ma\ 
4th), an editorial on “ Pleuro-Pneumonia in Maine.” One dis 
ease is perhaps no more desirable to have amongst our cattle 
than the other, but if the public should adopt the opinion tha' 
the contagion of pleuro-pneumonia exists only in Maine, even ii 
confined within the limits of the Agricultural College farm, ii 
might create an alarm which would result in a demand for ex 
treme sanitary measures, which, after all, might be quite unneces 
sary. It seems to us that State Veterinarian Bailey might cor 
rect that statement. We believe Maine to be free from pleuro 
pneumonia, and she ought to defend her good repute in thif 
particular. 
Pasteur Vaccine in Hog Cholera.— A letter to the Breeders 
Gazette , from the able veterinarian of the Bureau of Animal In 
dustry, Dr. E. Salmon, will be found reprinted on another page 
in relation to our remarks on the experiments made in Nebraska 
to test the value of inoculation for hog cholera. The results ob 
tained by the Doctor in testing the value, not of the process oi 
vaccination, but of the vaccine itself, as imported from Europe, 
will prove highly interesting. Knowing, as we do, that everj : 
scientific precaution has been observed by Dr. S. in conducting 
the experiments he has made, we see no alternative except to con¬ 
clude that the vaccine which was sent to us and delivered to him 
has entirely failed to produce the results anticipated, not only 
after being kept five weeks, but even after the very short period 
of three weeks from the date of its preparation. 
How these results are to be explained may be difficult to say. 
It can hardly be supposed that the vaccine failed because it was 
improperly prepared, the supply having been obtained directly 
from Mr. Pasteur’s laboratory. Has it been devitalized by expo¬ 
sure to heat and dampness and other changes consequent on a 
sea voyage ? Or, after all, is it, as Dr. Salmon seems to be in¬ 
clined to believe, and as he has expressed to us in our correspond¬ 
ence, that the rouget of the French and the hog cholera of 
America are entirely different diseases? These are all-important 
questions to determine, and perhaps no man is better able to do 
so than the head veterinarian of the Bureau of Animal Industry. 
