AN ENZOOTIC ATTACK OF CHOREA AMONG CATTLE. 
911 
after the first of January, except two carloads of two-year-old 
steers which were being fed for the market, but those receiving 
no grain remained in splendid condition. 
The forty acres referred to is fenced to itself and is not used 
during the summer, but is allowed to grow up in brush and 
weeds, and is used as a wind-break for winter. 
On one occasion about seventy-five head of cows and young 
cattle got into this enclosure and within three days about 
twenty head were showing the symptoms ; some were not able 
to stand for a few days, and others had to be pulled from ditches 
or creeks occasionally ; during the time these cattle were so 
badly affected they continued to eat and digest their food. The 
cattle were removed from that pasture and some of the affected 
ones improved rapidly, while others continued in about the same 
condition for several months. 
On March 22, 1901, I accompanied our State veterinarian to 
the Arnold farm ; there were several cattle still affected, and as 
thorough an investigation as could be made in one day was 
made by Dr. Duckey. 
Plans were laid to gain more knowledge of the affection, but 
as the grass came on the cattle gradually grew better, until by 
the first of May there was not an animal showing perceptible 
symptoms. 
The grade polled Angus heifer I spoke of as being first af¬ 
fected did not make permanent improvement until spring, but 
like all of the others she showed signs of improvement, to be 
succeeded by periods of the most aggravated symptoms ; after the 
grass was good in the spring she gradually regained her normal 
actions and was shipped to market about the middle of the sum¬ 
mer, apparently having made as good a growth as though she 
had never been affected. 
There was no treatment recommended for the cattle, and 
none was given, except that Mr. Arnold on his own judgment 
gave treatment to two cattle similarly affected. One of them 
received full doses of iodide of potassium, and the other full 
doses of the bromide, twice daily for a week. 
