intestines, bladder and other hollow organs.

RHEUMATISM.--This is an inflammation of the tissues that form the
locomotory apparatus. The effect of cold on the muscles and tendons is an
important factor in its production. It differs from other inflammations by
shifting from one part to another. It is termed _muscular rheumatism_ when
it affects the muscles, tendons and fascia, and _articular rheumatism_ when
it involves the articulations. A second classification, _acute_ and
_chronic,_ depends on the character of the inflammation. The muscular form
is common in horses, dogs and hogs, while the articular form more commonly
affects cattle.

_The following causes_ may be considered. Animals that are exposed to cold,
wet, changeable weather, or kept in cold, damp, draughty quarters
frequently suffer from rheumatism. Under such conditions it is very
probable that imperfect metabolism of body tissue occurs, and certain toxic
products that are capable of irritating the muscles and articulations form.
Clinical symptoms, and the presence of bacteria in the inflamed tissue
indicate that bacteria and their toxins play an important part in the
development of articular rheumatism. Heredity is said to be an important
predisposing factor. One attack always predisposes the animal to a second.

_The symptoms vary_ according to the severity of the attack. Local
rheumatism is not accompanied by serious symptoms. The regions most
commonly involved in local, muscular rheumatism are the shoulder, neck and
back. The joints affected in the articular form are the knee, fetlock, hip,
elbow and shoulder. The attack is usually sudden and accompanied by fever,
more or less loss of appetite and soreness. Loss of control over the
movement of the hind parts or walking on the knees may occur in the smaller
animals. The larger animals show a slight or severe lameness. The affected