C 17 5 ] 
of a Spur, The Points of the Rays were {harp, but 
there were no Afperities or Cryftallizations on their 
Surfaces. It was fmall, fo as after many Days to pafs 
along the Urethra : But if it had not paffed through 
the Neck of the Bladder, but remain'd in the Blad- 
der, it would, in all Probability, have attra&ed Mat- 
ter to all the Points or Rays, and increafed in all Pi- 
menfions. 
It is very common, that when any extraneous folii 
Subftance gets into the Bladder, there is either attracted 
to it, or adheres to and furrounds it, a tartareous cal- 
culous Concretion, which affumes the Figure of the 
faid Body now in its Centre, as a Nucleus . 
There was a Soldier cut in St. Thomas's Hofpital, 
London , for the Stone, which, when taken out, was 
found to cover a Mufquet- bullet, that had been fhot 
into his Bladder, where it was cover'd by a calculous 
Concretion. 
I have a filver Bodkin, which a Gentlewoman ufed 
for her Hair 5 and thinking with it to thruft back a 
Stone that was engaged in the Neck of her Bladder, 
it flipp'd into it, and the calculous Matter gather'd 
on the larger End into a Stone of an oblong Figure, 
and equal Thicknefs, of half an Inch all round the 
Bodkin. 
I have likewife a common Pin, which by fome 
means or other had got into the Bladder of a young 
Woman, and was there coated all over by a calculous 
Matter 3 but having occafion'd a fiftulous Ulcer in her 
Groin, it was difcliarged thence with the Matter of 
the Fiftula. 
It is in this manner that Bezoars are formed : for I 
have the common Eajl-India Bezoars, which are 
Ccc roundifh. 
