266 ESSAYS AND OBSERVATIONS^ 



membranes, and fometunes has a ftrong' 

 pulfation, as happened in that cafe rela- 

 ted by Severinus *, where there was a 

 great quantity of blood extravafated a- 

 mong the mufcles of the thigh ; at other 

 times the pulfation is but weak, or fcarce 

 to be perceived. 



The only cure in fuch cafes, where the 

 artery is large, is to apply a tournequet, 

 and make fuch a compreffion as to flop 

 the circulation in the part, to lay bare 

 the artery, and put a ligature round it,. 

 both above and below where it is wound- 

 ed or ruptured, and to make incifions in-' 

 to the cellular membranes for the evacu- 

 ation of the extravafated blood. An old' 

 man who had been blooded in the bafilic 

 vein, was thought to have an obftinate 

 thrombus at the part where the pundlure 

 had been made, and was allowed to ufe 

 the arm freely. After fome weeks, all 

 that arm, and a conliderable part of the 

 fore-arm, fwelled fuddenly to a great fize. 

 This was treated as a tumour of the in- 



flam- 



• M. Aurel. Sevcra. dc Effea. Medlcln lib, i, part. 2. 



