al loses flesh
rapidly, and dropsies of the extremities, of the under surface of the
belly, or of the internal organs may show themselves.

_Terminations._--These symptoms may gradually subside after five to
eight days, with an improved appetite the inanition may cease and the
animal commence to nourish its impoverished blood and tissues; the pulse
becomes stronger and the heart more regular and less tumultuous; the
mucous membranes assume a brighter and more distinct color; the
difficulty of respiration is removed, and the animal may make a
recovery. When death occurs it is usually directly due to heart failure;
in some cases it is caused by asphyxia, owing to the great amount of
exudation into the lung tissue, rendering its further function
impossible.

_Complications._--The pulmonary complications of infectious pneumonia
are secondary inflammatory or necrotic changes in the lungs themselves.
Suppuration at times takes place in the bronchi and may extend to the
lung tissue. In this case mucous rales develop which are most distinctly
heard over the trachea and on the sides of the chest directly behind the
shoulders. With the development of the mucous rales, to be heard on
auscultation, we have a more purulent discharge from the nostrils,
similar to that of a chronic or subacute bronchitis. If the inflammation
has been of some standing, cavernous rales may be heard, indicating the
destruction of a considerable portion of lung tissue and the formation
of a cavity. The effects of this more acute inflammatory process are not
appreciable in the general condition of the animal, except to weaken it
still further and add to its debilitated and emaciated cachexia.
Gangrene sometimes occurs. A sudden rise of the body temperature of 1 deg.
or 2 deg., with a more enfeebled pulse and a still more tumultous heart,
develop simultaneously with the appearance of a discharge from the
nostrils. This discharge is gray in color, serous or watery in
consistency, mixed with the detritus of broken-down lung tissue, and
sometimes contains clots of blood, or in more serious cases may be
marked by a quantity of fluid blood from a hemorrhage, which proves
fatal. The discharge is fetid to the smell. The animal emaciates
rapidly. On examination of the lungs mucous rales are heard in the
larger bronchi, cavities may be found at any part of these organs, and
points of lobular pneumonia may be detected.

A very serious complication is an inflammati