^02 INJURIES. 



bedding under them. Lieut. Lowther says, such tumours 

 are not rare among race-horses, and are, in them, clearly 

 traceable to hard lying. 



INFLAMED VEIN, PHLEBITIS. 



An inflamed jugular vein, the consequence of bleeding, is 

 occasionally met with in practice ; though it is one of less 

 frequent occurrence than formerly, owing to the more 

 careful performance of the operation, as well as the custom 

 of tying up the heads of horses for some time afterwards. 

 I feel it my duty to state this is an accident which, however, 

 will occasionally ensue under the most judicious regulations. 



The Healthy Process by which the part wounded in 

 letting blood is repaired, may be thus described : When 

 the incision is pinned up, the blood extravasated beneath it 

 becomes coagulated, and by the clot all further escape is effec- 

 tually prevented. Afterwards the wound in the vein inflames, 

 and adhesive matter is effused : this unites the divided 

 portions of the vessel, which, in a few days, will have 

 assumed the normal appearance. In the interim, the 

 coagulum beneath the skin is gradually absorbed, until it is 

 totally removed. Lastly, the adhesive matter joining the 

 incised integument is scarcely to be distinguished from the 

 sound parts, save by a varicosity, which ever after remains, 

 though perceptible only when the head is lowered or the 

 vein is raised. 



Origin of the Disease. — Should anything separate the 

 lips of the pinned up wound, suppuration will probably 

 ensue. To bring about this process the parts become 

 tumid, hot, and tender : every symptom indicates the 

 presence of internal inflammation, and ultimately a dis- 

 coloured discharge weeps from the orifice. 



The disease is then inflammatory, the seat of the 

 derangement is the coat of the jugular vein. When we 

 loosen the matted hair, the lips of the external wound will 

 be found everted, and redder than natural; and a sanious 

 matter, mingled with pus, is probably seen issuing from it. 



