[ 9> ] 



August 30th, 1790. The mixture of lime and lead in 

 N". 2, which was now dry, was triturated with one ounce 

 of diftilled water, and filtered ; the liquor on being expofed 

 to air was foon covered with a pellicle like lime water ; on 

 pafling hepatic air through it, it acquired . a flight brownifh 

 tinge. 



August 6th, 1791. Six hundred grains of lime, and the 

 fame quantity of lead, cut fmall, were put into a phial, with 

 about five ounces of water ; this was fufFered to ftand, corked, 

 until the 9th of Odlober 1792; the liquor was then poured off ; 

 when filtered it ftruck a flight brownifli colour with hepatic 

 air; eight ounces of diftilled water were boiled with the refi- 

 duum j the filtered liquor, by evaporation, yielded an extrad 

 of feven grains; marine acid was added to this extrad : the 

 folution was not complete ; a powder, probably plumbum 

 corneum, remaining at the bottom of the vefTel, which weighed 

 two grains. 



On Auguft 6th, 1 79 1, the fame quantities of lead and lime, 

 as in the former experiment, were made into a pafte with 

 diftilled water; this was fufFered to dry in the open air, and 

 the lime cake, containing lead, was examined on the 9th of 

 Odober 1792 ; it was then dry, but during the abovementioned 

 interval of fourteen months it had been wetted two or three 

 times. When examined it weighed fifteen hundred and ninety 

 grains ; each fmall particle of lead appeared furrounded with 

 a ycllowifti ring, which extended to fome diftance in the lime 



M 2 cake; 



