15 



TAB. CCCXLIII. 



VISMUTUM nativum. 



Native Bismuth. 



Class 3. Metals. Order 1. 



Gen. 13. Bismuth. Spec. 1. Native. 



Div. 1. Crystallized. 



Syn. Vismuthum nativum. Waller, 2. 205. 

 Gediegen wismuth. Emmerl. 2. 434. 

 Native Bismuth. Kirw. 2. 264. 

 Bismuth natif. Haiiy, 4. 1 84. 

 Vismutum. Linn. ed. 13. p. 128. 



This is a rare substance as British. It came from Corn- 

 wall, and was among the specimens I had the good fortune 

 to procure of the late truly ingenious Mr. Day. It appears 

 in the centre of Amorphous Brown Quartz. It has ,some 

 admixture of gray or dark Sulphuret and other substances, 

 perhaps Cobalt, with Oxide of Iron, &c. At Johann- 

 Georgenstadt and Sneeburg in Germany, it is sometimes 

 found crystallized in four- sided tables, in somewhat cu- 

 bical or truncated tetraedrons. Its primitive form is an 

 octaedron. The colour of the present varies from whitish 

 to tarnished yellow, reddish or purple ; metallic fracture 

 more or less perfectly foliated, folia parallel to the planes 

 of a regular octaedron. The peculiarly beautiful crystal- 

 lization of this substance obtained by melting it in a proper 

 degree of heat, and then suffering it to cool, attracts at- 



