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Hence we may more certainly pronounce than before, that there 

 is no medicine of fufficicnt efficacy to dillblvc the Stones or Gravel 

 in the Kidneys. 



I have often heard in converfation, that medical men, and par- 

 ticularly furgeons, are accuttomed to forbid thole who are afflicted 

 with the Gravel, the iife of fome particular kinds of diet. But, 

 for my part, I am well allured, that there is no kind of food in 

 common ufe, which will not generate that calcareous matter which 

 in goutv perfons is called chalk Hones, and likewife Stones and 

 Gravel in the Bladder or Kidneys. But, in Ihort, fome phj-ficians 

 and furgeons talk of the efficacy of medicines in our bodies, and 

 alfo of the conftitution of our bodies themfelves, in much tlie fame 

 manner as bhnd men talk of colours. 





