of the fluid Hood in an aneurismal tumour. 195 
Plate V. 
A representation of the appearance of the remains of the 
tumour twenty months after the femoral artery had been 
tied by Mr. Hunter, in the first case in which he performed 
that operation for the cure of popliteal aneurism, in the year 
1785, at St. George’s Hospital. The case was published in 
1793, in the first volume of the Transactions of a Society for 
the Improvement of Medical and Chirurgical Knowledge, but 
no engraving accompanied that account. That now given is 
taken from the parts removed from the body after death, 
which are rendered distinct by having been injected. 
Fig. 1 . Shows the femoral artery, the canal of which had 
been rendered impervious from the going off of the large 
muscular branch called profunda, down to where the ligature 
had been tied, and there it was ossified. Below this it re- 
tained its natural size. There is a small branch from the 
arteria profunda anastomosing with the femoral trunk imme- 
diately below the impervious portion, at the part where the 
coats afterwards became ossified. The femoral vein accom- 
panies the artery. 
Fig. 2. represents the continuation of the femoral artery, 
showing the dilatation into the aneurismal sac ; the size of 
which is much greater than could have been expected had 
the absorption gone on with the same activity as in naturally 
formed parts, 20 months, after the disease had been put a 
stop to. 
Below the aneurismal tumour is a large anastomosing 
branch from the profunda, with the trunk of the popliteal 
artery before its division. The veins are spread over the 
tumour. 
