walking exercise) it is plausible to ascribe the condition to idiopathic
factors.

Admitting the frequency of non-infectious lymphangitis, the practitioner
must not confuse this type with similar lymphatic inflammation
occasioned by nail punctures of the foot. It is very embarrassing indeed
to make a diagnosis of lymphangitis--expecting that the disturbance will
terminate favorably and uneventually--and later to discover a sub-solar
abscess caused by a nail prick in the region of the heel.

Recurrent attacks of this disturbance cause hypertrophy of the lymph
vessels and in some cases lymphangiectasis. In old subjects used for
dissection or surgical purposes, it is very evident that in the ones
which have suffered from chronic lymphangitis there exists an excessive
amount of sub-facial connective tissue, making subcutaneous neurectomies
quite difficult in some instances.

A sequel of chronic lymphangitis is a condition known as elephantiasis.
In such cases there occurs a hyperplasia of the skin and subcutaneous
tissues, resulting in some instances, in the affected member attaining
an enormous size. Sporadic cases of this kind are to be seen
occasionally, and are apparently caused by repeated attacks of
lymphangitis. The affection is not benefited by treatment, and while a
horse's leg may become so heavy and cumbersome as to mechanically impede
its gait, as well as to fatigue the subject when made to do service even
at a slow pace, elephantiasis causes no constitutional derangement. The
hind legs, in elephantiasis, are affected and a unilateral involvement
is more often seen than a bilateral one. The legs may be enlarged from
the extremity to the body, but ordinarily the affection does not extend
higher than the hock or the mid-tibial region.