in
its stall in place of being worked or driven out to show to prospective
purchasers. The disease may run a simple course as a specific fever,
with alterations only of the blood, or at any period it may become
complicated by local inflammatory troubles, the gravity of which is
augmented by developing in an animal with an impoverished blood, an
already irritated, rapid circulation, and defective nutritive and
reparative functions.

The first symptoms are those of a rapidly developing fever, which
becomes intense within a very short period. The animal becomes dejected
and inattentive to surrounding objects; stands with its head down, and
not back on the halter as in serious lung diseases. In the flanks, the
muscles of the croup and of the shoulders, or of the entire body it has
chills lasting from 15 to 30 minutes, and frequently a grinding of the
teeth which warns one that a severe attack may be expected. The hairs
become dry and rough and stand on end. The body temperature increases to
104 deg., 104.5 deg., and 105 deg. F., or even in severe cases to 107 deg. F., within
the first twelve or eighteen hours. The horse becomes stupid, stands
immobile with its head hanging, the ears listless, and it pays but
little attention to the surrounding attendants or the crack of a whip.
The stupor becomes rapidly more marked, the eyes become puffy and
swollen with excessive lacrimation, so that the tears run from the
internal canthus of the eye over the cheeks and may blister the skin in
their course. The respiration becomes accelerated to 25 or 30 in a
minute, and the pulse is quickened to 70, 80, or even 100, moderate in
volume and in force. There is great depression of muscular force; the
animal stands limp, as if excessively fatigued. There is diminution, or
in some cases total loss, of sensibility of the skin, so that it may be
pricked or handled without attracting the attention of the animal. On
movement, the horse staggers and shows a want of coordination of all the
muscles of its limbs. The senses of hearing, sight, and taste are
diminished, if not entirely destroyed. The visible mucous membranes (as
the conjunctiva), from which it received the name pinkeye, and the
mouth, and the natural openings become of a deep saffron, ocher, or
violet-red color. This latter is especially noticeable on the rim of the
gums and is a condition not found in any other disease, so that it is an
almost diagnostic symptom. In some outbreaks the