he will stop feeding, paw,
contract the muscles of his neck, and eject a portion of the feed
through his nose or mouth, or it will gradually work down to the
stomach. As the dilatation thus empties itself the symptoms gradually
subside, only to reappear when he has again taken solid feed. Liquids
pass without any, or but little, inconvenience. Should this dilatation
exist in the cervical region, surgical interference may sometimes prove
effectual; if in the thoracic portion, nothing can be done, and the
patient rapidly passes from hand to hand by "swapping," until, at no
distant date, the contents of the sac become too firm to be dislodged as
heretofore, and the animal succumbs.

DISEASES OF THE STOMACH AND INTESTINES.

As a rule it is most difficult to distinguish between diseases of the
stomach and of the intestines of the horse. The reason for this is that
the stomach is relatively small. It lies away from the abdominal wall,
and so pressure from without can not be brought to bear upon it to
reveal sensitiveness or pain. Nor does enlargement, or distention, of
the stomach produce visible alteration in the form of the abdomen of the
horse. Moreover, it is a rule to which there are few exceptions, that an
irritant or cause of disease of the stomach acts likewise upon the
intestines, so that it is customary to find them similarly deranged. For
these reasons it is logical to discuss together the diseases of the
stomach and intestines and to point out such localizations in one organ
or another as are of importance in recognizing and treating the diseases
of the digestive organs of the horse.

It should be understood that gastritis signifies an inflammation of the
stomach and enteritis an inflammation of the intestines. The two terms
may be used together to signify a disease of the stomach and intestines,
as gastro-enteritis.

COLIC.

The disease of the horse that is most frequently met with is what is
termed "colic," and many are the remedies that are reputed to be "sure
cures" for this disease. Let us discover, then, what the word "colic"
means. This term is applied loosely to almost all diseases of the organs
of the abdomen that are accompanied with pain. If the horse evinces
abdominal pain, he probably will be considered as suffering with colic,
no matter whether the difficulty is a cramp of the bowel, an internal
hernia, overloading of the stomach, or a painful disease of the bladder
or liver. Since these co