COPPER. 
GENERIC CHARACTER. 
Colour red. 
Malleable, flexible, and ductile. 
Soluble in most acids. 
Melts at 27 degrees of Wedgewood’s pyrometer. 
SPECIFIC CHARACTER. 
Cuprum nativum. C. nudum nitoris metallici. Linn. Syst. 
Nat. Gmel. 3. p. 339 . 
Naked copper of a metallic lustre. 
Cuprum nudum minerae inherens. Syst , 
Nat. Linn. xii. 3. p. 143. no. 2. 
Cuprum nudum malleabile. Cartheus , 
Miner. 6g. 
Cuprum nativum. Waller. Syst. Miner. 2. 
p. 274. no. 1. 
Native Copper. . Cronst. Miner. 2 . p. 6/8. Kir wan, Miner. 2. 
p. 128. Brongn. Miner. 2. p. 211. 
Copper presents itself to our notice under a variety 
of forms, of which the one we have chosen for our 
specification is by far the most pure. It occurs 
either in little leaves in the fissures of mineral 
bodies, or in grains, or blistered lumps disseminated 
in argillaceous or ochrey earths. It is to be found, 
