mora fo io Af^hr^ Vary^ Hk 25* ^^fj^/i^/but neither of thm 
fo' ftrange la caufe or effeai as. riiine^ 
It's .not for want of old Authorities that I have heri 
quoted few but Moderns- 3 ! know Gah^^ Crato^ Sennertm', 
M. Donatmj Z« Luftanm., FermUm^ G. Horfiim\, Schenckjm^' 
mi mmj more before this Age, who have^^„told the world 
of Stones generated in^' and ejeded from the Inteftioes of 
difeafed people, but none that 1 know with fuch (urprizing 
drcuKiftances as this fene you by * . 
S I Tour mofi humble Servant^ 
James Yongc. 
The Ball intire is figured No 3, a^d its infdc and flumb- 
ftofie hj it* 
V. Some injlances of other perfons who were hurt hy fmah 
lowing ^lumh^ftonesy hy the ^uhliper. 
^ y^HedifcGurfe mentioned in the beginning oi the foregoing 
i Letter was concerning Plumb-ftones which had been 
fwallowed by fome perfons, and had been the caiife ©t: their 
Sicknefs or Death, 
The firft was a Man in Lanc^iflnre^ who being for many years 
ill of the Colic, and recdving relief from no Med'cine^ deiired 
he might be differed after liis Deaiii^ to fee what might be 
the caofe of his Difeafe. This was accordingly done.and they 
took out of one of his-Guts a largeBail 6 inches about, of an 
ounce- and half weight made up of a ipiingy niatter which 
fwims in Water, and viewed by a Microfcope, appeared to be 
made up of very fmall^traufparent Hairs or Fibres/wrought to- 
gether, after the manner of the Tophus Bovinm taken out of 
the maws of Oxen. In the middle or center of it was a 
common Prune or Piumb-ftone.^ which had been fwallowed^ 
and fticking ^ fompwhere.in the Guts, had' gathered that 
fiibftance about it which refembled the finall Hairs on the 
skins of feveral Creatures or Fibers of Plants we eat. Dr 
Charles Leigh in his Natural Hiftory of Lmcafiire , 
&c. in his firft Table has figured this Fig. 4, He 
Nnnnnuii fhew 
