and are absorbed, or expelled by coughing, in from seven days to two weeks,
depending on the extent of the inflammation and the general condition of
the animal.

_In the subacute form_ the symptoms are mild and may subside within a week.
Sometimes _abscesses_ form in the lung. _Gangrenous inflammation_ of the
lung can be recognized by the odor of the expired air and the severity of
the symptoms. This form of pneumonia terminates fatally. If the larger
portion of the lung tissue is inflamed, death from asphyxia may occur in
the second stage.

The success in the _treatment_ of pneumonia depends largely on the care.
Properly ventilated, clean, comfortable quarters and careful nursing are
highly important. Large animals should be given a roomy box stall. Cold
does not aggravate pneumonia, providing the animal's body is well protected
with blankets and the limbs bandaged. Wet, damp quarters and draughts are
injurious. Hogs should be given plenty of bedding to burrow in. A light,
easily digested diet should be fed. Very little roughage should be fed. If
the animal does not eat well, it may be given eggs and milk. Weak pulse
beats should be treated by giving digitalis and strychnine.
Counterirritation to the chest wall is indicated. During convalescence,
bitter tonics may be given. Constipation should be treated by giving the
animal castor or linseed oil.

PLEURISY.--Inflammation of the pleura is most common in horses. It occurs
in all farm animals and is frequently unilateral. There are two forms of
pleurisy, acute and chronic. Pleuropneumonia is common when the cause is a
specific germ. This occurs in tuberculosis, pleuropneumonia of horses and
pneumococcus infection.