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neral and metalline Qualities, thence af- 

 fume their Variety of Colour and Hard- 

 nefs, and are called by their feveral dif- 

 tin61: Names, as will be Ihewn when we 

 come to the precious Stones of Value. 



Apyri. Sulphur a. 



We find in this Repofitory many Spe- 

 cimens of Stones that rcfifl Fire, and of 

 the different Kinds of Sulphurs, or in- 

 flammable Minerals. 



Apyri are opake rough Stones, fo called 

 from their refifting an intenfe Heat, and 

 yielding neither Smoke nor Sparkles in 

 the Fire. I fhall mention fome of the 

 Kinds : and firft 



Lapis Ollaris, This is a foft Stone, and 

 may be cut or turned into Veffels of dif- 

 ferent Forms. 



Mica^ the Glimmer, is a brittle Stone, 

 on which, when broke, are to be feen 

 fmall white poliihed Lamina, as in Talc. 

 The MicaAurea^ the gold glimmer, is fre- 

 quently found in Arabia^ E^ypt^ and 



other 



