2(^8 ESSAYS AND OBSERVATIONS 



Where the artery is but fmall, fucH 

 a comprefTion kept on the artery as will 

 flop the circulation in it, and incilions 

 inade through the fldn and cellular mem* 

 branes, to allow the extravafated blood to 

 be evacuated, may fometiraes be fuffi- 

 fient. 



This fpecies is mod likely to happen 

 where the wound or hole in the artery is 

 at hrft confiderable ; for it generally 

 makes a rapid progrefs It may too, fome- 

 times be occafioned by the fudden burfl- 

 ing of the facs, either of the true or in- 

 cyflcd aneurifms, without any rupture of 

 the fldn. 



II. In the other kind, or the inqfled, 

 falfe aneurifms, the blood from the artery 

 is collet'^ed in a cyft formed by the cel- 

 lular and other membranes, and aponeu- 

 rofis, which happens to lie above the 

 artery, drove clofe together. 1 his fpe- 

 cies of aneurifm mod commonly begins 

 after a wound or punclure, where either 

 the coats of the artery have been quite 

 cut through, but the haemorrhage has 



been 



