THE HORSE—THE EXTREMITIES. 159 
firm and hard to the touch, and in old horses like bone, interfering with the 
action of the tendons and causing lameness. 
TREATMENT.—Wind galls seldom cause lameness; hence it is usually 
not wise to treat them. If lameness ensues, however, it generally results 
from a sprain of the tendon or a joint, and will be removed by a chamois- 
skin pressure as directed under Bog Spavin. Should this fail to remove 
the lameness and swelling, foment the part a half-hour morning and even- 
ing with warm water, dry well, and then rub in a lotion of one ounce of 
thus to one pint of water. Should the wind gall be very large, axd mot 
connected with the joint, it may be punctured with asmall trocar on its 
upper surface, and the fluid be pressed up and out. A compress and band- 
age must then be applied to close the sac and exclude the air, and not be 
removed for two days. After that time, place over the wind gall a piece 
of lint soaked in glycerine, with oil-silk and a bandage over it. Renew this 
dressing night and morning. Keep the horse in a loose box, not taking 
him out for ten days or two weeks, and omitting all work for a month. 
ULCERATION OF THE JOINT CARTILAGE. 
Inflammation of the synovial membrane sometimes extends to the car- 
tilage covering the ends of the two main bones of the joint, diminishing 
the secretion, causing ulceration, wearing away of the cartilage, and polish- 
ing of the surface of the bones, thus giving rise to what has been erro- 
neously called porcelain deposit. 
TREATMENT.—Remove the hair and apply, with a thin, broad knife 
(not rubbed in), a preparation made on the following formula: 
Todine, 2 drachms. 
Iodide of potassa, 1 drachm. 
Sulphuric acid, 2 drachms. 
Palm oil, 1g ounce. 
Mix. 
Repeat the application in about three weeks, if the cure is not complete. 
CAPPED HOCK. 
This is usually caused by a kick, but may arise from an injury to the 
tendons at the point of the hock, as when horses injure themselves in lying 
down or getting up. 
Symptoms.—An elastic, generally movable, swelling at the hock sud- 
denly appears. It is of two kinds: (1). A mere bruise of the skin may 
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