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a. It is found plentifully in Saxony, and in lefs 

 quantities in England, but it is fcattered in arfe^ 

 nical ores very generally. It is diftinguiflied into 

 native bifmuth, flowers of bifmuth, and bif- 

 muth ore. 



L. Cobalt is a femi-metal of a whitifli grey 

 color, fine grained texture, hard and brittle, 

 about fix times heavier than water ; foluble in 

 aqua regia, the vitriolic and nitrous acids, tinge- 

 ing them red, after the difllpation of the 

 arfenic from the cobalt. By calcination, zaffire* 

 and the blue glafs called fmalt, are procured. 



a. Black cobalt, " mixt with iron without arfe- 

 nic, friable, in form of an ochre or a flag, hard 

 and glofly." 



b. Cobalt ochre, or cobalt flowers, mixt with 

 the calc of arfenic, an efrlorefcence on cobalt 

 ores. 



c. Cobalt ore, " mineralized with arfenic and 

 iron, folid, refembling fteel, or cryftallifed. 



d. Chryftalline cobalt ore, " mineralized with 

 fulphur, iron and arfenic." 



It is found mod plentifully in Saxony, par- 

 ticularly in the diftricT: of Mifnia; but it is 

 alfo met with in many other parts of Eu- 

 rope. 



M. Arsenic, wherever it is found, may be 

 known by evaporation over the fire, as it gives 

 forth a flrong garlick-like fmell, very noxious in a 

 large quantity. (See Sect IV. page 35.) folu- 

 ble in acids, and even water by boiling. 



a. Mineralized with fulphur, called yellow, or 

 red orpiment. Sometimes it is united with tin, 

 lead, filver, copper, or antimony. The richeft 

 filver ores abound with arfenic. 



1 



b. White 



