122 THE CANADIAK HOESE 



filled with blood, whigli in the early stage is a fluid, and at 

 a later period in a more or less coagvlated state." — Cooper. 



It is a rare occurrence in the horse, and when it does 

 occur in any vessel of importance it invariably proves fatal. 



THROMBUS. 



Thrombus is the name given to a round tumour which 

 sometimes occurs around the puncture made in bleeding. 



Causes. — It is usually the result of irregularity in pinning 

 up the wound by drawing the skin out, allowiag the blood 

 to be extravasated into the cellular tissues ; also from the 

 opening in the skin not being opposite the opening in the 

 vein, or too small to allow the blood to escape freely, — often 

 from the tissues being irritated by repeated striking of the 

 fleam, or " perhaps from spontaneous inflammation and 

 serous efiusion in the divided integuments and membranes 

 themselves." 



Symptoms. — It is easily recognised by the appearance of 

 a round full swelling surrounding the opening a short time 

 after bleeding. 



Treatment. — It should be re-opened, the coagula squeezed 

 out and the edges of the wound again brought together, 

 and a pad, or sponge, saturated with a strong solution of 

 goulard lotion, or cold water, constantly applied for an hour 

 at a time- — the pad being supported by a broad bandage 

 round the neck. The head must be tied up for at least 

 twenty-four hours. It usually subsides in a day or two. 

 Should swelling remain, it should be blistered and treated 

 as in phlebitis. 



INFLAMMATION OF VEINS (PHLEBITIS). 



Owing to the practice of bleeding horses for all ailments, 

 which is still very common among farmers in Canada, phle- 



