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Other Eaftern Parts of the World the 

 Mica Argent ea^ the filver glimmer, in Silef.a 

 and Bohemia^ and both of them fome- 

 times in Englajtd. The Spangles, with 

 which the Mica abounds, have often led 

 People to imagine they had found fome 

 Gold or Silver Ore, but in truth it con- 

 tains neither of thofe metals, being only 

 a kind of Talc accidentally coloured. 



7* ale is a Ihining Stone, eafily feperated 

 into thin tranfparent Scales or Leaves, is 

 flexile and elaftic, does not give Fire with 

 Steel, nor ferments with acid menftrua. 

 What we call Ifmglafs, is a kind of Talc i 

 it is dillinguifhed from the Plates of the 

 Selenites by its Elafticity. The Romans 

 ufed it in their Windows and it now 

 often ferves to cover miniature Paintings, 

 iu W^ater-Colours, or Crayons, The Oil 

 of Talc has made a great noife among the 

 Alchymifts, on account of the Pov/er it 

 was faid to have, of fixing Silver fo as to 

 make it of equal Value with Gold, but no 

 fuch Oil was ever known to be extraded, 

 E 2 that 



