INJURIES TO AETERIES. 589 



a clot has formed within the artery, from effusion of lymph and 

 coagulation of the blood), than secondary hsemorrhage occurs. 

 A large artery, when divided, ought to be secured by ligature, or 

 acupressure upon both sides of the wound ; for if it be secured 

 on the cardiac side only, the bleeding will continue by the flow 

 of the blood being re-established through the medium of the 

 collateral and anastomosinor branches. 



The methods of arresting hgemorrhage, particularly if the 

 wounded vessel or vessels be small, by the application of styptics, 

 or the actual or potential cautery, are very successful ; and they 

 act by producing a clot, which may be temporary only, but 

 before it is cast off the natural haemostatic process has time to 

 be completed. 



" The actual cautery should be applied at a red heat only, not 

 at a white heat, lest the slough should separate too soon. The 

 cautery slightly impairs the vital functions of the coats of the 

 vessel at the injured point, a clot forms, and the circulation is 

 arrested." — (Spence.) 



LYMPHANGITIS, OR INFLAMMATION OF THE LYMPHATICS. 



This affection resembles bilious erysipelas in the human being, 

 and is known among horsemen by a variety of terms. In Scot- 

 land it is called a " weed ;" in England a " shot of grease," 

 " shake," and " Monday morning disease." 



Inflammation of the absorbents is usually confined to one 

 hind leg ; occasionally both hind legs are simultaneously or suc- 

 cessively affected, and more rarely the fore limb, generally the 

 right — off — is the seat of the disease. 



The local inflammation is commonly preceded by a shivering 

 fit — rigor — which may continue for some hours ; and as a rule 

 the severity of the attack is denoted by the intensity and dura- 

 tion of the rigor. The rigor is accompanied by more or less 

 restlessness ; and lameness in the affected limb is manifested 

 at an early stage. To the rigor a hot stage succeeds. The 

 animal now blows, sometimes with great intensity, whilst sweats 

 bedew the body; the pulse is hard, full, and strong, the 

 accompanying fever being of the " sthenic type ;" the visible 

 mucous membranes injected, bowels constipated, the secretion 

 of urine scanty, the urine high-coloured, and loaded with hip- 

 purates and urea. 



