ected part. If the
eruption is around the nostrils and lips, the glands between the jaws
(submaxillary) form abscesses as in a case of strangles; if the eruption
is in a pair of greasy heels abscesses may form in the fold of the groin
(inguinal). There may be so much tumefaction of the nostrils as to
produce difficulty in breathing.

_Complications._--A case of horsepox may be attended with various
complications of varying degrees of importance. Adenitis, or suppuration
of the glands, has just been mentioned. Confluent eruptions irritate the
part and induce the animal to rub the inflamed part against the manger
or scratch it in other ways and thus produce troublesome ulcers, which
may leave ugly scars. Irritation of the mucous membrane of the nose
causes severe coryza with purulent discharge.

The eruption may occur in the throat or in the air tubes to the lungs,
developing an acute laryngitis or bronchitis. If the animal is exposed
to cold, or worked so as to engorge the lungs with blood at the
termination of the specific fever, just when the eruption is about to
localize, it may be determined to the lungs. In this case we have a
short, dry cough, labored breathing, the development of a secondary
fever of some gravity, and all the external symptoms of a pneumonia.
This pneumonia differs, however, from an ordinary pneumonia in the
symptoms furnished by the examination of the lungs themselves. In place
of a large mass of the lung tissue being affected the inflammation is
disseminated in smaller spots over the entire lung.

_Diagnosis._--The diagnosis of horsepox is to be based on the presence
of a continuous fever, with rosy mucous membranes, for several days and
the appearance of the characteristic eruption. If the eruption is in the
nasal cavities, marked by a considerable discharge and attended with
submaxillary abscesses, it may be confounded with strangles. If the
throat is affected, it may be confounded with an angina (laryngitis or
pharyngitis), but in the latter the local trouble precedes or is
concomitant with the fever, while in the former the fever precedes the
local trouble by several days. Variola may be confounded with bronchitis
or pneumonia if complicated with these troubles and the eruption is
absent from the exterior, but it is of little moment, as the treatment
for both is much the same. When the eruption is in the neighborhood of
the genital organs the disease has been mistaken for dourine. In vario