828 
N. S. MAYO. 
affected, the pleura is thickened, the bronchi and bronchioles 
are inflamed and contain a frothy mucus ; the lymphatic glands 
throughout the body are enlarged and hypersemic. 
Treatment .—We observe preventive measures and sanitary 
rules. When we have large numbers we divide them into 
smaller herds. When an animal appears to be sick it is taken 
away at once and put by itself or with the sickly ones. We 
will not buy from strange herds, neither do we want attendants 
from infected herds visit where the hogs are free from disease. 
ENSILAGE POISONING ? 
By N. S. Mayo, Connecticut State Agricueturae Coeeege, 
Storrs, Conn. 
In private practice, and particularly in State sanitary work, 
one frequently runs across apparently mysterious and unde¬ 
scribed diseases. The writer does not offer the following as a 
new disease, or an undescribed one, but it is a condition which 
the writer, although having considerable experience in live stock 
sanitary work, has never met before, nor have I seen it described 
in the literature at my command. • 
The writer does not presume to entertain a new and valu¬ 
able opinion on the subject, but hopes he may receive informa¬ 
tion from those who have met with this condition, or have had a 
wider experience in the study of animal diseases. 
May nth, I was called to a large dairy farm near Hart¬ 
ford, to investigate a disease, which was attacking the dairy 
cows. One of the cows I found dead upon my arrival, one sick, 
and another taken sick ten hours later. 
The symptoms were practically the same in the two cows 
observed, and from the description of the symptoms exhibited 
by the cow that died, as they were described by the owner, who 
is an intelligent and careful observer, I feel confident that 
the first cow suffered from the same condition. 
What made the owner especially anxious regarding these 
animals was the fact that a year previous, at the same time of 
