PHYSICAL AKD LITERARY. 237 



ral may be known, without telling any 

 appearances by which we can diftinguifli 

 whether the difeafe is owing to the one 

 or to the other of thefe caufes. Paulus 

 of iEgina, after copying Galen's words, 

 pretends to relate the fymptoms peculiar 

 to the difeafe, when caufed by anaftomo- 

 fis, or by a wounded artery ; and diredg 

 a different method of operation for 

 each*. 



At prefent, Pliyficians underftand, by 

 the name of Aneurifms, all conliderable 

 dilatations of arteries, and all tumours 

 filled with blood which communicate 

 with the internal cavity of any of the 

 larger arteries, but divide them into the 

 true and the falfe or fpnriouSt and the 

 mixed '^ calling thofe /rw<f, where all or 

 fome of the proper coats of an artery are 

 dilated ; and, thofe falfe or Jpiirious^ 

 where there is no fuch dilatation of the 

 coats, but fuch an aperture in an artery 

 of the larger feries as allows blood to 

 flow into a cavity or cavities, and form a 



tuniour; 



"^ See Paulus ^Egiaacta, lib, 6. cap. 37, 



