590 DISEASES OF THE AKTERIES AND LYMPHATICS. 



The local inflammation is manifested by swelling of the 

 inguinal glands when it is in a posterior extremity, and of the 

 brachial glands wdien a fore limb is affected ; the swollen glands 

 are very painful when pressed npon, and a swelling extends 

 downwards from them, first as a narrow elevation upon the 

 inner side of the thigh or arm, but soon extending in every 

 direction ; it involves the whole circumference of the limb, from 

 the glands first inflamed down to the foot. As the swelKng 

 increases, the pain and lameness subside. 



Mr. Haycock, wdio was the first to give this disease a scien- 

 tific name, very graphically describes a case of it which occurred 

 in his practice. He says : — " The horse is standing in the stable 

 on three legs, the left hind limb being held with the foot from 

 the ground. Great anxiety is depicted on the animal's coun- 

 tenance, and he frequently looks round at the limb held up. 

 The respirations are forty-eight per minute ; the pulse ninety-six, 

 and hard and cord-like to the touch. The nostrils are dilated to 

 their full extent, and the perspiration rolls in drops from the 

 sides of the abdomen, the shoulders, and the thighs. The affected 

 limb is greatly distended upon its inner surface, from its junc- 

 tion with the body to the very foot. The lymphatic glands are 

 swollen into large lumps or masses, and towards them, in all 

 directions, run a great number of lymphatic vessels, enlarged 

 to the size of a thick quill. These enlarged vessels exist on 

 the outer as well as the inner side of the limb. The surface of 

 the swelling is covered with a serous exudation ; the mouth is 

 dry and clammy ; and great desire is evinced for cold water." 

 The horse lived for two years after the attack, the limb remain- 

 ing thicker than natural. At the end of that time Mr. Hay- 

 cock had the opportunity of dissecting the affected limb, and 

 he describes its condition as follows : — " On the removal of the 

 skin from the hind extremities, I at once observed a difference 

 in the colour of the exposed structures. The fascia of the dis- 

 eased limb was covered with a yellow-coloured fluid, not unlike 

 as though the tissue liad been coated over with a quantity of 

 bile, or very yellow serum. On cutting deeper, I perceived the 

 areolar tissue to partake of the same colour, and a yellow liquor 

 exuded from it ; the tissue itself was also changed ; it was 

 dense, thicker, and partook niore of a fibrous character than 

 natural. This change w^as observable in all the areolar tissue 



