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Yllt The Method^ Manner and OtdeY of the 
^\;TYanf mutation of Coppr into Brafs, Sec. By 
Thomas Povey,£/^5 Brought into the Royal: 
Soc. of which he is a Fellow.. 
E havQ in the North par ts of £«'^/^«<i muGh- 
'Copper, which places, tho as they now' lye,- 
aTe barren and poor, might be rendered rich and' ufe- 
ful, were a fufficient encouragement given to the dig- 
ging and rajfing thereof, and the poor theroabout 
might be put in a good way of livelihood, as well as- 
feveral other advantages to be brought thereby to the^ 
Publick. 
The Calamine is digged out of cer- 
dig^l^^prlpa- tain Mines, of which there are feveraP 
ring the Calamine , jn the Weft oi England, as about 
iX^' ^''"^'''^' Mendlp, 8cgJ which lye about 20 
Foot deep, as Coals do,thence brought 
up by Sea* It is burnt or calcined in a Kiln or Oven, 
made red hot, then grpwnd: to powder, and fifted in- 
to the fineneft of Flower, then mixt with grownd 
Charcoal, becaufe the Calamine is apt to be clammy 
and^to clQd,r and notfo apt or capable of incorpora- 
tfhg' ^ then they put about 7 pound of Calamine into a 
Melting-pot of about a Gallon content, and the Coffer 
uppermoft about 5 /. the Calamine xmlii be mixt with as 
many Coals as will fill up the pot. This is let down 
with Tongs into a Wind-furnace, S^foot deep, and re- 
mains eleven hours therein^ They, caft off not above 
twice in twenty four hours, one Furnace holds eight 
Pots,. After Melting it is caft into Plates or Lumps. 
