ANALYSES OP MINERALS. g(j£ 



Alumstone from la Tolfa. Alumstone 



Silex 59*5 ( Z aiIi ** Tolfa, 



Alumine 19 



Sulphuric acid l6'5 



Potash 4 



Water 3 



102 

 Alumstone from Hungary. Hungary, 



Silex 62*25 



Alumine 17*50 



Sulphuric acid 12*50 



Potash 1 



Water 5 



98*25 

 Aluminous earthy schist from Freyenwalde. and Freyea. 



Sulphur. 28*5 



Charcoal 196-5 



Alumine 160 



Silex 400 



Black oxide of iron, with a 



trace of manganese 64 



Sulphate of iron 18 



Gypsum 15 



Magnesia 2 



Sulphate of potash 15 



Muriate of potash 5 



Water , 107*5 



1011-5 

 Jade from Switzerland, hemanite of Delametherie, saus- j a( j e 

 surite of Saussure. 



Silex 49 



Alumine 24 



Lime 10-50 



Magnesia 3*75 



Oxide of iron 6*50 



Soda '. 5*50 



99*25 



Lazulite 



