when the animal seems to be
on the road to perfect recovery, abscesses may form in the internal
organs and produce symptoms characteristic of disease of those parts.

Roaring, plunging, wandering in a circle, or standing with the head
wedged in a corner of the stall indicate the collection of matter in the
brain. Sudden and severe lung symptoms, without previous discharge,
point to an abscess between the lungs, in the mediastinum; colic, which
is often continuous for days, is the result of the formation of an
abscess in some part of the abdominal cavity, usually in the mesentery.

_Pathology._--The lesions of strangles are found on the surface of the
mucous membranes, essentially of the respiratory system, and in the
loose connective tissue fibers of the internal organs and glands, and
consist of acute inflammatory changes, tending to the formation of
matter. The blood is unaltered, though it is rich in fibrin, and if the
animal has died of asphyxia it is found dark colored and uncoagulated
when the body is first opened. If the animal has died while suffering
from high fever the ordinary alterations throughout the body, which are
produced by any fever not attended by alteration of blood, are found.

_Prevention._--Healthy horses should be separated from the infected
animals, and the stables in which the disease has occurred should be
thoroughly disinfected. Since the disease frequently occurs annually on
infected premises, systematic disinfection should be practiced after an
outbreak. The stables, as well as all utensils which might have come in
contact with the infection, should be thoroughly disinfected. By such
practices recurrences of the disease may be prevented.

_Treatment._--Ordinary light cases require but little treatment beyond
diet, warm washes, moistened hay, warm coverings, and protection from
exposure to cold. The latter is urgently called for, as lung
complications, severe bronchitis, and laryngitis are often the results
of neglect of this precaution. If the fever is excessive, the horse may
receive small quantities of Glauber's salt (handful three times a day)
as a laxative, bicarbonate of soda or niter in one-dram doses every few
hours, and small doses of antimony, iodid of potash, aconite, or quinin.
Steaming the head with the vapor of warm water poured over a bucket of
bran and hay, in which belladonna leaves or tar have been placed, will
allay the inflammation of the mucous membranes and greatly