^ NORFOLK. as 



In the open air i".— 



In water, it neither falls %, nor dijfohes. 



In the Jire, it burns to lime, lofing one- 

 third of its weight in the fire. 



In the acid of fea-falt, almoft the whole of 

 it is dilfolved. Of one hundred grains, ninety- 

 eight pafs through the filter; leaving only 

 two grains of refidue. Principally a dark- 

 brown ruft-like matter ; fine enough to lodge 

 itfelf in the pores of the paper, leaving only 

 ^ few particles of fand upon the filter. 



Afolution of the fait of tartar precipitates 

 the diffolved matter in a white mucilage, which 

 dries to a yellowifh -white powder ; which, being 

 retained three hours in a flrong fire, lofes 

 two-thirds of its weight, and is converted into 

 a friable mafs of yellowifb-white quick- lime : 

 which being re-difiblved and re-precipitated, 



•f Having omitted to make an intentional ohfervation ovt, 

 this circumftance, I cannot fpeak to it politlvely ; bur, from 

 the fmall quantity ufually fet on, and the fhort time it lafts, 

 as. well as from general ohfervation, I believe, that it mixes 

 readily with the foil. 



+ A piece, the fize of a hazel-nut, lay feveral hours in 

 ^yatcr without undergoing the leaft change. 



regains 



