SYMPTOMS. 269 



in an antero-posterior direction ; it feels hot, is very painful 

 when manipulated, and sometimes bedewed with perspira- 

 tion. 



Gradually the swelling extends downwards, first as a narrow 

 line in the course of the vessels, steadily extending in breadth 

 until it covers the greater part of the inner surface of the limb 

 to which it is confined until the hock or knee is reached, from 

 which point to the foot both sides of the limb are involved, 

 and, with the pain and lameness, increases in severity until 

 the crisis is reached, when all are stationary for a day or two. 

 In severe cases, where the distension of tissue is great, a slight 

 serous exudation is seen and felt over the inner surface of the 

 limb in the course of the vessels, particularly at the flexures of 

 the joints, the hocks, and fetlocks. 



From the first appearance of these local symptoms until 

 they reach their full development, the pain and lameness are 

 persistent, if not of gradual increase. 



2. General. — Immediately succeeding, or synchronous with, 

 the appearance of these local symptoms, is the manifestation 

 of the constitutional fever. It is, however, highly probable, 

 were particular attention bestowed on each individual case, 

 that the constitutional disturbance would be found in every 

 instance to precede the local changes. 



Between these two classes of symptoms, the constitutional 

 and local, there is exhibited, as regards their severity, a direct 

 relation to and mutual dependence on each other, a high 

 development of the one never occurring while the others are 

 in abeyance. 



Like the local symptoms of oedema, pain, and lameness, this 

 fever or constitutional disturbance is sthenic in its nature, and 

 moves rapidly through its different stages of development. It 

 is occasionally ushered in by the shivering-fit so common to 

 most febrile disorders ; the pulse is early indicative of much 

 systemic disturbance; from its normal standard of forty-five 

 to fifty beats in the minute it is increased to seventy-five or 

 ninety-five, the artery feeling tense and cord-like under the 

 finger ; the respirations, unaffected in mild cases, become hur- 

 ried, short, and catching in the more severe. The internal 

 temperature is elevated two or three degrees, the mouth feels 

 clammy, the bowels inclined to be confined, while the urine. 



