first cases came to us in 1902.

In its early stage this disease is so subtle and slow that it is months
in developing; and this feature renders it all the more deadly, through
the spread of infection long before the ailment can be discovered.

One of our antelope arrivals, apparently in perfect health when
received, was on general principles kept isolated in rigid quarantine
for two months. At the expiration of that period, no disease of any kind
having become manifest, the animal was placed on exhibition, with two
others that had been in the Park for more than a year, in perfect
health.

In one more week the late arrival developed a swelling on its jaw,
drooled at the corner of the mouth, and became feverish,--sure symptoms
of the dread disease. At once it was removed and isolated, but in about
10 days it died. The other two antelopes were promptly attacked, and
eventually died.

The course of the disease is very intense, and thus far it has proven
incurable in our wild animals. We have lost about 10 antelopes from it,
and one deer, usually, in each case, within ten days or two weeks from
the discovery of the first outward sign,--the well known swelling on the
jaw. One case that was detected immediately upon arrival was very
persistently treated by Dr. Blair, and the animal actually survived for
four months, but finally it succumbed. From first to last not a single
case was cured.

In 1912, the future of the prong-horned antelope in real captivity seems
hopeless. We have decided not to bring any more specimens to our