on a thick and comfortable
straw bed, the cold fomentations during such intervals being discontinued.
When the case is a marked one and the animal valuable, benefit will be
derived from the application of crushed ice.

The animal's condition must be watched, and the case helped as far as is
possible by the administration of a mild dose of physic, by saline drinks,
and, when necessary, by the giving of small but repeated doses of Fleming's
tincture of Aconite in order to relieve the pain. In a chronic case the
repeated application of a blister is indicated.

(b) PURULENT OR SUPPURATIVE SYNOVITIS.

In this condition we have synovitis complicated by the presence of pus.
Unlike the simple form, it shows a marked disposition to spread, and
quickly involves the surrounding structures. Very soon the ligaments of
the joint, the periosteum, the articular cartilages, and the bones are
implicated. This, of course, constitutes a condition of acute purulent
arthritis. Under that heading, therefore, the condition will be later
discussed.

B. ARTHRITIS.

(a) SIMPLE OR SEROUS ARTHRITIS.

With an attack of simple synovitis it may be always assumed that the
changes commenced in the synovial membrane, communicate themselves more
or less readily to the surrounding tissues, and are not confined to the
synovial membrane alone. We may thus have the inflammatory phenomena
asserting themselves in the surrounding ligaments, in the periosteum, in
the bone, and in the articular cartilages. It depends, in fact, upon the
severity of our case whether we call it synovitis or arthritis. The two
conditions merge so the one into the other that no hard-and-fast rule
may be laid down whereby they may with certainty be differentiated. Such
symptoms, therefore, as we have given for synovitis may be also read as
indicating a condition of simple arthritis. The course of the case will be
very similar, and the treatment to be followed identical with that just
given.

(b) ACUTE ARTHRITIS.

_Causes_.--An attack of acute arthritis may commence with the affection of
the synovial membrane, and spread from that to the other structures. In
other cases the disease of the synovial membrane, and after it the disease
of the joint, may be secondary to diseases commencing in the structures
around the joint. This affection may therefore follow on a case of acute
coronitis, a case of suppurating corn, a case of quittor, a severe case of
tread, or may attend a case