( 6 7 6 > 
apprehend this Defcription of their huddling the fmalfer 
Calamine ; but you muft know tliat all of it doth not 
require (o much trouble ; for fome rifeth big enough out 
ot the Works to be cleanfed and pickt fit tor the Calci- 
ning Oven without all this Charge and Pains : And I 
have feen feveral Loads of this great Calamine^ which 
had no mixture of Earth or Trafli in it. 
After they have prepared their Calamine by w r afhing 
and picking, they then carry it to the Oven, which, at 
leaft that which \ faw, is much bigger than any Bakers 
Oven, and made much in the fame Fafliion, only this 
way of heating, burning or baking the Calamine is dif- 
ferent ; for it is not done as bread is ; for they caft in 
their Coals into a Hearth made on one fide of the Oven,, 
which is divided from the Oven it (elf by a Hem or 
Partition made open at the top, wheieby the Flame of 
the Fire pafleth over, and fo heats and bakes the Cala- 
mine. They let it lie in the Oven for the fpace of Four 
or Five Hours, the Fire burning all the while, according 
%o the ftrength of the Calamine, fbme being much ftron- 
ger than other, and fo requiring longer time ; and while 
it continues in the Oven, they turn it feveral times with 
long Iron Cole- rakes ; when it is fufficiently burnt, ba- 
ked and dried,, they beat it to a Powder with long Iron 
Hammers like Mallets,, upon a thick Plank, picking, 
out what Stones they find amongft it ^ fo that at lalt 
the Calamine is reduced, to Duft : From the Oven it is 
conveyed in Sacks, to fbme Port, where being bought 
by the Merchants, it is carried beyond- Sea, commonly 
i think to Holland, whether I refer you to be further in- 
formed concerning the ufe of it I made enquiry what 
Medical or other Vertue there was known to be in it, 
and I have been informed by feveral credible Perfbns, 
that the Duft of Calamine, contrary to other Duft which 
blinds, doth conduce much to the curing of fore Eyes 
