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154 Poll-evil.—An abscess in the top of the neck, near the head, caused by a blow.

.—Bulging sole, weak crust, the result of "laminitis." Incurable.

Quarter Crack.—Occurs usually on the inside of fore-foot. A bad sign, as well as very slow and troublesome to cure.

.—Dropping the food half chewed from the mouth. Indicative of sore throat.

.—Burrowing abscess in the foot.

Rheumatism.—Cause, effect, and treatment the same as for human beings.

.—An enlargement of the bone by growth, a little above the coronet.

.—Caused by a contraction of windpipe. Incurable.

of all kinds constitute unsoundness.

Saddle-gall.—Swelling caused by chafing of saddle. If the skin is broken it is called a "sitfast;" if not, a "warble."

Sallenders.— Scurvy patch in front of hock-joint.

Sand Crack.—Occurs on the inside of fore-foot and on the toe of the hind-foot.

Scratches.—See "Chapped Heels."

Scouring.—Looseness of the bowels.

.—A separation of the crust of the hoof from the laminæ, the result of laminitis. Scarcely curable.

.—A bony growth just above the coronet, causing lameness. Incurable.

.—See "Bone, Blood, and Bog Spavin."

Speedy Cut.—A cut of the knee from the foot of opposite leg. Dangerous, because the pain often causes the horse to fall.

.— See "Apoplexy." "Sleepy," " Trotting," and "Mad " Staggers are different forms and stages of the same disease, caused usually by overfeeding.

Strangles, or Colt Distemper.—A severe swelling of the glands of the throat, which gathers and breaks.

or .—A peculiar snatching up of the hind-leg, caused by some nervous disorder. Incurable.