418 DISEASES OF THE HORSE’S FOOT 
case of acute coronitis, a case of suppurating corn, a case 
of quittor, a severe case of tread, or may attend a case of 
laminitis. . 
Symptoms.—In our cases we get very little beyond a mag- 
nification of such symptoms as we have described under 
acute synovitis. The heat and the pain is perhaps greater, 
and the lameness more marked. It is rather to the con- 
stitutional disturbance we must look, however, for a confir- 
mation of our opinion that arthritis is in existence. This 
is always severe, and of an acute febrile nature. The pulse 
is fast, thin, and thready, the respirations enormously in- 
creased, and the temperature high. The appetite is in 
abeyance, the animal quickly becomes what is termed 
‘tucked-up,’ or greyhound-like, in the body, and patchy 
perspirations break out about him. The limb is held with 
the joints all semiflexed, and severe and intense throbbing 
pains are indicated by the frequent pawing movements the 
animal makes in the air. Manipulation of the foot is re- 
sented, and the agonizing intensity of the pain so caused is 
shown by the drawn and haggard appearance of the eyes. 
In a favourable case the symptoms from now onwards 
may gradually subside. The appetite returns, the breathing 
and other signs of disturbance show a return to the normal, 
weight is placed on the limb, and resolution slowly but 
surely takes place. In many of these, our favourable cases, 
however, resolution is incomplete, and recovery only takes 
place at the expense of anchylosis of the joint, a condition 
we shall refer to later. 
In unfavourable cases, and these unfortunately are only 
too common, the condition terminates in suppuration. 
(c) PurvLENT orn SuppuRraTivE ARTHRITIS. 
Definition.—By this term we indicate an arthritis com- 
plicated by the formation of pus within the joint. 
Causes.—The organisms of pus-may infect the joint by 
extension of a suppurating process from without. For 
example, in the case of a suppurating corn, in quittor, in 
tread, or in the case of a suppurating wound caused by 
