272. DISEASES OF THE HORSE. 
pass, being nothing more than spaces in the connective tissue until 
they reach the larger lymph vessels, which finally empty into lymph 
glands. These lymph glands are structures so placed that the lymph 
flowing toward the larger trunks passes through them, undergoing a 
sort of filtration. From the fact of this arrangement lymph glands 
are subject to inflammatory diseases in the vicinity of diseased struc- 
tures, because infective material being conveyed in the lymph stream 
lodges in the glands and produces irritation. 
LOCAL INFLAMMATION AND ABSCESS OF LYMPHATIC GLANDS. 
Acute inflammation of the lymph glands usually occurs in connec- 
tion with some inflammatory process in the region from which its 
lymph is gathered. Several or all of the glands in a cluster may 
become affected, as in strangles, nasal catarrh, or nasal gleet, diseased 
or ulcerated teeth, the lymph glands between the branches of the 
lower jaw almost invariably become affected, which may lead to sup- 
puration or induration. Similar results obtain in other portions of 
the body; in pneumonia the bronchial glands become affected; in 
pharyngitis the postpharyngeal glands lying above the trachga be- 
come affected, etc. 
Symptoms.—tThe glands swell and become painful to the touch, the 
connective tissue surrounding them becomes involved, suppuration 
usually takes place, and one or more abscesses form. If the inflam- 
mation is of a milder type, resolution may take place and the swelling 
recede, the exudative material being absorbed, and the gland restored 
without the occurrence of suppuration. In the limbs a whole chain 
of the glands along the lymphatic vessels may become affected, as in 
farcy, phlebitis, or septic poisoning. 
Treatment.—Fomentation with hot water and the application of 
camphorated soap liniment or camphorated oil may produce a revul- 
sive action and prevent suppuration. If there is any indication of 
abscess forming, poultices of linseed meal and bran made into a paste 
with hot water should be applied, or a mild blistering ointment 
rubbed in over the swollen gland. As soon as fluctuation can be felt 
a free opening must be made for the escape of the contained pus. 
The wound may subsequently be washed out with a solution: of 
chlorid of zinc, 5 grains to the ounce of water, three times a day. 
LYMPHANGITIS. 
Specific inflammation of the lymphatic structures usually affects 
the hind legs; very seldom a fore leg. This disease is very sudden in 
its attack, exceedingly painful, accompanied by a high temperature 
and great general disturbance. ; 
