; or irritant medicines, especially any
increased use of antimony, turpentine, or the more active remedies; the
taking of indigestible feed, or of feed in too great quantities, or that
has been altered in any way by fungus or other injurious alterations;
the swallowing of too cold water; or any other irritant may cause
congestion. This complication is ushered in by colics. The animal paws
with the fore feet and evinces a great sensibility of the belly; it
looks with the head from side to side, and may lie down and get up, not
with violence, but with care for itself, perfectly protecting the
surface of the belly from any violence. At first we find a decided
constipation; the droppings if passed are small and hard, coated with a
viscous varnish or even with false membranes. In from 36 to 40 hours the
constipation is followed by diarrhea. The alimentary discharge becomes
mixed with a sero-mucous exudation, which is followed by a certain
amount of suppurative matter. The animal becomes rapidly exhausted and
unstable, staggers on movement, losing the little appetite which may
have remained, and has exacerbations of fever. The pulse becomes softer
and weaker, the respiration becomes gradually more rapid, the
temperature is about 1 deg. to 1.5 deg. F. higher. If a fatal result is not
produced by the extensive diarrhea the discharge is arrested in from 5
to 10 days and a rapid recovery takes place.

_Complication of the lungs._--If at any time during the course of the
fever the animal is exposed to cold or drafts of air, or in any other
way to the causes of repercussion, the lungs may become affected. In the
majority of cases, however, after three, four, or five days of the
fever, congestion of the lungs commences without any exposure or
apparent exciting cause. Unless this congestion of the lungs is soon
relieved it is followed by an inflammation constituting pneumonia. This
pneumonia, while it is in its essence the same, differs from an ordinary
pneumonia at the commencement by an insidious course. The animal
commences to breathe heavily, which is distinctly visible in the heaving
of the flanks, the dilatation of the nostrils, and frequently in the
swaying movement of the unsteady body. The respirations increase in
number, what little appetite remained is lost, the temperature increases
from 1 deg. to 2 deg., the pulse becomes more rapid, and at times, for a short
period, more tense and full, but the previous poisoning of the