t ] 
of a prodigious Size, which fill'd all its Left Side. I took 
the Knife, and clear'd all round the Tumor; whereby 
I found the urinary Bladder clofe pent up between the 
anterior Part of the Tumor and the Ojja pubis*, which, 
occafion'd the Strangury the Patient had been tor- 
mented with : The Return , which lay upon the Mid- 
dle of the Os facrum , was alfo vaftly prefs'd on by 
the Tumor, which feem'd to take its Rife from the 
Holes that are in the Left Side of that Bone. The 
Surgeon was fo unluckily impatient, that while I laid 
down the Knife, in order to feparate the O (fa pubis: 
with a Hatchet, he cut out the Tumor. I then exa- 
min'd the Os facrum , ^vhich was fo very fbft, that my, 
Fingers enter'd it every where on the Left Side. The 
Tumor is of an ovoide Figure, cover'd over with fe- 
veral Membranes: Its Weight is two Pound and an- 
half; its longeft Axis is five Inches and fome what more 
than three quarters, French Meafure ; its fhortefi: four 
Inches three quarters. Atfirft Sight Itook it for a Pa- 
renchyma, but, upon Diffe&ion, found it analogous to 
the Liver in Subftance, Colour and Confidence. Its 
Artery, Vein and Nerve are very big, and are diftri- 
buted through its whole Subftance: Wherefore I 
really take it to be one of the conglobate Glands of 
the Pelvis, whofe Veffels yielding to the Blood inn 
pell'd thither with greater Force and in larger Quan- 
tity than ufual, on account of the violent Exercifes of 
Dancing, Jumping, which the Patient very much 
practis'd, gave Room to its Increafe to that enormous 
Size. Upon opening, I remark'd three very apparent 
Divifions in it : And where the Pfoas lay over it, and ; 
one of the Pyramidales beat upon it, it was offified* . 
I preferve it in Brandy, and find that the fmall Veffels, , 
