[ 547 ] 
meafured one inch and three tenths ; its tranfverfe 
fe&ion meafured at lead feven tenths of an inch. It 
had a faponaceous fmoothnefs, like other gall-hones, 
and floated upon water. It weighed only about 126 
grains. 
Tho’ it be difficult to conceive, how fo bulky a 
fubftance, generated in the gall-bladder, could be 
conveyed along fo narrow a paffage as the common 
biliary dudf, efpecially confidering the obliquity of 
its infeition for near half an inch of length betwixt 
the coats of the duodenum ; yet there feem fuflicient 
dcittz in the above cafe to prove, that this animal 
hone was. not formed in the alimentary tube, but 
(large as it was) had come into it from the duSius 
comonunis cboledochus. 
The fhape and faponaceous fmoothnefs, and colour 
of the lamina?, of this fubhance, fhew it was moulded 
in the gall-bladder, and formed from bilious particles. 
The fevere pain and torture, and enormous vomiting, 
Ihe underwent, for feven hours after her firh feizure* 
argue, that it muh then be lodged in fome canal 
much narrower and hraighter than the alimentary 
canal.; for fo foon as it dropped into that, the fevere 
pain in a great meafure cealed. 
But that hraight canal, in which it was htuated 
during thofe feven hours of torture, could be no other 
than the dudlus communis cboledochus ; for, during 
this fpace of time, no bile was emptied into the 
bowels, nor thrown up by the ftrongefl: efforts of 
"vomiting. But. no fooner had fhe perceived the 
caufe.of her pain to move or drop downwards (a 
fenfation, which points out the precife moment the 
ffone mull have dropped into the duodenum ), than 
4 A 2 fhc 
