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On the SOLUTION o^-LEAD by LIME. 

 £y ROBERT PERCEVAL, M.D. M.R.I.A. 



An the year 1787 I obferved that the lining of milled lead, Read June i, 

 which covered the infide of a water ciftern, was corroded, in 

 feme places, fuperficially, in others, quite throughout, fo as to 

 fuffer the water to efcape. 



The holes were fmall and ragged at their edges. The lead 

 was about one-twelfth of an inch thick. 



The plumber, who was employed to repair it, imputed 

 the accident to fome mortar which had accidentally fallen 

 into the ciftern, and lain on its bottom a confiderable time ; 

 confidering this circumftance as worthy of fome inveftigation, 

 I tried the following experiments with a view of afcertaining 

 in what manner the corrofion took place, and particularly of 

 determining how far it might be promoted by the contad of 

 air. 



Vol. V. M These 



