subsided.

Interfering is much more serious in animals that are used at fast work
than in draft horses. In light-harness or saddle horses, it may render
the subject practically valueless or unserviceable if the condition
cannot be corrected.

Treatment.--Wherever possible, cause is to be removed and if animals
are properly used, ordinary interfering wounds will yield to treatment.
If the shoeing is faulty, this should be corrected, the foot properly
prepared and leveled before being shod and suitable shoes applied. In
young animals that become "leg-weary" from constant overwork, rest and
recuperation are necessary to enhance recovery. In such cases it will be
found that very light shoes, frequently reset, will tend to prevent
injury to the fetlock region such as characterizes these injuries of
hind legs.

Palliative measures of various kinds are employed where cause is not to
be removed and a degree of success attends such effort. In draft horses
or animals that are used at a slow pace, shields of various kinds are
strapped to the extremity and protection is thus afforded. Or, large
encircling pads of leather, variously constructed, serve to cause the
subject to walk with the extremities apart.

Interfering shoes of different types are of material benefit in many
instances. Often the principle upon which corrective shoeing is based is
that the mesial (inner) side of the foot is too low; the foot is
consequently leveled and the inner branch of the shoe is made thicker
than the outer, altering the position of the foot in this way. This is
productive of desirable results. However, much depends upon the manner
in which the foot in motion strikes the weight-bearing member as to the
corrective measures that are indicated. This belongs to the domain of
pathological shoeing and the reader is referred to works on this subject
for further study of this phase of lameness.

Lymphangitis.

Excluding glanders, in the majority of instances, lymphangitis in the
horse, such as frequently affects the hind legs, is due to the local
introduction of infectious material into the tissues as a result of
wounds. However, one may observe in some instances an acute lymphangitis
which affects the pelvic limbs of horses and no evidence of infection
exists. Consequently, lymphangitis may be considered as _infectious_ and
_non-infectious_.

INFECTIOUS LYMPHANGITIS.

Etiology and Occurrence.--Traumatisms of the legs frequently result in