( 437 ) 
Agreeable to this are the Opinions of all the reft of 
the Antients, as likewife of the Arabians , who bor- 
rowed moft that they have from them. 
Fornelius , as ’tis faid, is the firft who maintained, 
that the Artery was only dilated, and not burft in an 
Aneuryfm, and that the Blood was contain’d within the 
Coats of it, as it is within thofe of the Vein in a Va - 
rix 3 which is therefore called by fome, £ dvevpva* 
[Awn. 
Sennertus makes it to be a Dilatation, not of both 
the Coats, but of the outward one only, the inner or 
mufcular one being firft burden, or broken, and he is 
followed herein by moft of thofe who have fucceeded 
him, excepting Wifeman and fome others, who tell us, 
that it is nothing but an Extra vafation of the Blood, 
burfting through the Coats of the Arteries into the 
Interftices of the Mufcles, and there forming a Tu- 
mour fuitable to the Cavity that it findeth, the Artery 
remaining undiftended or undilated all the While , and 
that in all thofe Aneuryfms, which have come to be 
examined, both the Coats of the Artery have conftant- 
ly been found open. 
This being the State of Opinions with relation to an 
Aneuryfm, we had lately an Opportunity of examining 
further into it, by Means of a Patient, who was taken 
into our Hofpital. 
She was about four and thirty Years of Age, and of 
a good Conftitution, but there was a Tumour, bigger 
than one’s Fift, which began from the upper Part of the 
Sternum, between the Origins of the Mufculi Maftou 
d#t> and extended it felf to the Tomum Adamt , almoft 
up to her Chin, and polTefs’d all the Breadth between 
the two Carotid Arteries , 
z 
The 
