Elements of Mineralogy. 

 ceous Earth, 30 of argill, i or 2 of mag* 

 nefia, and 18 or 20 of iron. 



The white fort probably contains lefs 

 iron. 



All thefe forts become reddifh by calcina- 

 tion. 



SPECIES XVI. 



Siliceous Earth imperfectly united with 0,34 

 of its weight of Calcareous Earth, 0,107 f 

 its weight of Argill, 0,08 of Magnejia r 

 0,026 of Iron y and about 0,048 of Water. 



Bar Shoerl, Stangen Shoerl of the Germans. 



This was lately found in the Carpathian 

 Mountains by Mr. Fichtel, imbodied in lime- 

 ftone, and cryftalized in prifms : it flightly 

 efFervefces with acids. 



According to Mr. Bindheim, 100 parts of 

 it contain 6i : 6 of filiceous Earth, 21,6 of 

 calcareous Earth, 6,6 of argill, 5 of mag- 

 nefia, 1,6 of iron, and 3 of water. 3 

 Schrift. Naturforfcb. Freunde^ p. 452. 



SPECIES XVII, 



