USE OF ZINC ORE AS A PAINT, \^ 



thousand acres of land belonging to his Lordship ; where 

 the mineral is found, there were formerly copper mines. 



This article is found in caverns, about eight fathoms from 

 the surface of the earth. The mineral lies in strata, along 

 tlie bottoms of these caverns, which strata are from three to 

 six feet thick, and the best coloured mineral, or whitest, lies 

 the lowest. On the upper part of the caverns are beautiful 

 stalactites of great hardness. 



One of the caverns wherein it is found is one hundred 

 and four yards, another forty-four, and a third eighty-four 

 yards in length, and about fourteen yards wide. 



His Lordship supposes this mineral has been sublimed Surrounding 

 by a volcano, as the stones surrounding it have been vitri- stones vitiifici 

 fied. 



The mineral was first tried as a paint twelve years ago; Triedasapaint 

 it was previously sold, and continues to be sold to make ^^ 5'^^''' ^8*>* 

 brass at Birmingham and other places. He has sold up- 

 wards of two thousand tons, at from five to ten pounds per Before used for 

 ton, for makmg brass, when mixed with copper. making brass. 



His Lordship stated, that it has answered well for house Its excellen- 

 paiuting externally, and the whiteness improves by time;*^'^** 

 that it will in painting cover a much larger surface than 

 white lead paint, and he supposes it will do half as much 

 more work ; that it forms a body on the wood so hard as to 

 resist the edge of an adze; and that it forms a strong ce- 

 ment betwixt two boaids painted with it. 



That it will never peel off; that the oil paint on palings 

 withstands the effect of moisture; and that it will mix as u 

 basis with all other colours. 



His Lordship added, that the price will net exceed that Cheap. 

 of white lead ; on the contrary, he thinks, that, except in 

 the finest preparations, tipon an average it will come consi- 

 derably lower. 



Dear Sir, 



PERMIT me again to assure the Society, that t])e body The ore very 

 of my pa nt is equal to white lead, and that the ore itsell P""^®* 

 is so pure, and is found in the mine so little mingled with 



any 



