Intelligence and Miscellaneous Articles. 485 



The previous analyses of Rammelsberg, Geffken and Kiihn, agree 

 with the foregoing. 



Pistazite from Burowa, south of Miask, imbedded in quartz ; den- 

 sity, 3-35. 



Silica 36-87 



Alumina 18" 13 



Lime 21*45 



Magnesia 0*40 



Soda 0-08 



Peroxide of iron 14*20 



Protoxide of iron 4 60 



Carbonic acid 0*89 



Boracic acid a trace 



9662 

 Pistazite from Werchneuvinsk, or puschkinite ; density, 3-43. 

 The crystals are red or green, according to their position against the 

 light 



Silica 37-47 



Alumina 18*64 



Lime 2206 



Soda with traces of lithia 2-28 



Peroxide of iron 14" 15 



Protoxide of iron 2 -5 6 



Carbonic acid 0" 79 



Water 065 



Boracic acid a trace 



98-60 

 Pistazite from Bourg d'Oisans in Dauphiny, of an olive -green 

 colour ; density, 3 '38. 



Silica 37-60 



Alumina 18*57 



Lime 21*19 



Magnesia 1*40 



Peroxide of iron 13*37 



Protoxide of iron 5*55 



Carbonic acid 1*22 



Water 0-46 



99*36 

 Pistazite from Achmatowsk, of a grass-green colour ; density, 3*39. 



Silica 37*38 



Alumina 18-25 



Lime 2472 



Magnesia 0'39 



Soda 0-91 



Peroxide of iron 12-31 



Protoxide of iron 2'20 



Carbonic acid 1*61 



Water 059 



Boracic acid a trace 



98-36 



