on the ground, but is soft and compressible when the foot is off the
ground. In old horses windgalls generally develop slowly and cause no
inconvenience. If they are caused by excessive tension of the joint the
tumor develops rapidly, is tense, hot, and painful, and the animal is
exceedingly lame. The patient stands with the joint flexed, and walks
with short steps, the toe only being placed on the ground. When the
tumor is large and situated upon the inside of the leg it may be injured
by interfering, causing stumbling and inflammation of the sac. Rest
generally causes the tumor to diminish in size, only to fill up again
after renewed labor. In old cases the tumors are hardened, and may
become converted into bone by a deposit of the lime salts.

_Treatment._--The large, puffy joints of suckling colts, as a rule,
require no treatment, for as the animal grows older the parts clean up
and after a time the swelling entirely disappears.

When the trouble is from an injury, complete rest is to be obtained by
the use of slings and a high-heeled shoe. Cold-water douches should be
used once or twice a day, followed by cold-water bandages, until the
fever has subsided and the soreness is largely removed, when a blister
is to be applied.

In old windgalls, which cause more or less stiffness, some relief may be
had by the use of cold-compress bandages, elastic boots, or the red
iodid of mercury blisters. Opening the sacs, as recommended by some
authors, is of doubtful utility, and should be adopted only by the
surgeon capable of treating the wound he has made. Enforced rest until
complete recovery is effected should always be insisted upon, since a
too early return to work is sure to be followed by relapse.

SPRAIN OF THE FETLOCK.

Sprain of the fetlock joint is most common in the fore legs, and, as a
rule, affects but one at a time. Horses doing fast work, as trotters,
runners, steeplechasers, hunters, cow ponies, and those that interfere,
are particularly liable to this injury.

_Causes._--Horses knuckling at the fetlock, and all those with diseases
which impair the powers of locomotion, such as navicular disease,
contracted heels, sidebones, chronic laminitis, etc., are predisposed to
sprains of the fetlock. It generally happens from a misstep, stumbling,
or slipping, which results in the joint being extended or flexed to
excess. The same result may happen where the foot is caught in a rut, a
hole in a bridge, or in a c