226 A SYSTEM OF 



k. It abforbs or expels the phlogifton, which 

 has coloured glafTcs, if mixed with them 

 in the fire. 



SECT. CCXXX1X. 



Arfenic is found, 

 i . Native, Arfenicum nativum ; called Scherben- 

 cobolt and Fliegenftein by the Germans. 



It is of a lead colour when frefh broken, 

 and may be cut with a knife, like black lead, 

 but foon blackens in the air. It burns with a 

 imall flame, and goes off in fmoak. 

 A. Solid and teitaceous, Arfenicum nativum 

 particulis impalpabilibus teftaceum. Scherben- 

 cobolt. 



This is found in the mines of Saxony, 

 the Harts, and Hungary. 

 I>. Scaly, Particulis micaceis, from Winorn at 



Kongiberg in Norway. 

 C Friable and porous, Friabik et porcfum. 

 Fliegenftein. 



i. With mining Mures, Fijfuris nitentibus, 

 from Annaberg in Saxony. 



This is by fome called Spigel Cobolt , 

 (Minera ccbalti fpecularis) according to 

 their notions of the affinity of thefe me- 

 tals to one another. However, there al- 

 ways remains after the volatilifation of 

 the Scherbencobolt, fome calx, either of 

 cobalt or bifmuth, and fome filver, 

 though in toofmall a quantity to deierve 

 any notice. 



SECT. CCXL. 



2. In form of a calx, Arfenicum calciforme.- 

 A. Pure, or free from heterogeneous fub- 

 ilances,. Calx arfmici naiiva pura. 



i. Loofe 



