249 The Diseases of Animals 
the name, “thorough-pin.” The causes and treatment 
are the same as for wind-puffs. A pad or truss is also 
made that ean be applied as for a bog-spavin. 
CURB 
A curb is a bulging or thickening of the ligaments 
and other tissues on the back part of the hock, just 
below the point, giving to that part a curved, bulging 
outline instead of the straight line that is normally 
presented when the hock is viewed from one side. 
Some horses’ hocks, because of their rough, weak 
appearance, are called by horsemen “eurby” hocks. 
They seem to show predisposition to this disease. The- 
exciting causes are severe strains on the hock-joint, 
such as may oceur by heavy pulling, and especially 
by rearing and jumping. Such movements are often 
spoken of by horsemen as liable to “spring a curb.” 
There is usually lameness, associated with some 
inflammation, at the back part of the hock, followed 
by the appearance of a bunch, or thickening, of that 
part. The lameness frequently disappears, but the 
enlargement persists, leaving a blemish more or less 
marked. An animal having a curb is always unsound, 
being unfitted for fast work. But this lameness may 
not seriously interfere with his usefulness as an ordinary 
work- horse. 
In treating curb, the horse should have rest and a 
high-heeled shoe on the foot of the affected leg. Mild 
counter-irritants, in the form of liniments, tincture of 
iodine or iodine ointment, or light blisters applied to 
