of the fluid blood in an aneurismal tumour. 191 
pain was not much increased : after it had been immersed 
20 minutes the pulsation all at once stopped, and the needle 
was immediately withdrawn ; the pain in ten minutes went 
off, and the patient was quite easy. From this time there 
was no pulsation in the tumour, which to the feel appeared 
solid, and therefore I considered the progress of the aneurism 
arrested ; this was in some measure proved by the pulsation 
remaining violent in the external iliac artery down to the 
part pressed upon by the sac, but no further. 
Although the patient was free from pain, took his usual 
allowance of food, and relished his wine and porter as much 
as before, the foot about the 50th day became cold to the 
touch, the thigh and leg oedematous, and about the 60th 
day vesications made their appearance on the foot and leg ; 
the skin lost its sensibility, and although he had little or no 
pain, the weight of the thigh took from him all power of 
moving it. 
These symptoms were the forerunners of mortification, 
the pressure from the tumour above preventing the leg from 
receiving a sufficient supply of nourishment ; they did not 
however increase, and he remained in nearly the same state 
till the 90th day, when he died. 
The upper part of the thigh, which had been regularly 
measured, was found on the 44th day to be 24 inches, and 
remained of the same size at his death, three inches and an 
half beyond that of the other. 
On the examination of the parts after death, the external 
iliac artery was found to pass down in the front of the aneu- 
rismal sac ; it was pervious in its course to the part where 
the ligature had been made on the femoral trunk ; there it 
