62 PHYSIOGRAPHY. 



Native Arsenic Native Bismuth. 



Brittle. Hardness = 3*5. Sp. gr. = 5*766, a Saxon 

 variety. 



Compound P^arieties. Reticulated, reniform and stalac- 

 titic shapes ; composition granular, small and often impal- 

 pable : it is sometimes columnar, forming a second curved 

 lamellar cocnpositiop ; the individuals being generally im- 

 palpable, and the faces of the second composition reniform 

 or uneven. In columnar particles of composition, a cleav- 

 age in a direction perpendicular to the axis of the individu- 

 als, is observed. 



1. Upon ignited charcoal, or before the blow-pipe, it emits a strong 

 garlic smell, and copious white fumes ; and at last disappears altogether. 

 It is the volatilized metal, and not the white fumes of arsenious acid, 

 which possess the odor of garlic. 



2. Analysis. 



By JOHJY. 



Arsenic . . 96-00 . . . 97-00 



Antimony . . 3-00 . . . 2-00 



Oxide of iron and water 1-00 . . . 1*00 



3. It is not uncommon in several of the mines of Annaberg, Schnee- 

 berg, Marienberg and Freiberg in Saxony ; also at Joachimsthal in Bo- 

 hemia, at Andreasberg in the Hartz, in the Black Forest, in Alsace at 

 Allemont in Dauphiny, at Kongsberg in Norway, at Kapnik in Transyl- 

 vania, and in beds at Orawitza in the Bannat of Temeswar. 



4. It is variously employed in metallurgical processes; it enters into 

 the composition of certain kinds of glass, and of many colors, and has 

 been introduced even among the pharmaceutical preparations. It is a vi- 

 olent poison. 



NATIVE BISMUTH. Bismuth Melacone-Metal. 

 Primary form. Regular octahedron. 

 Secondary form. Rhombic dodecahedron. 



