484 Intelligence and Miscellaneous Articles. 



Silica 40*95 



Alumina 3024 



Lime 2156 



Protoxide of iron 4*96 



Carbonic acid 1*18 



Water 0'56 



99-40 

 This analysis agrees with the previous results of M. Geffken 

 from the zoisite of the same locality, and with those of other analysts 

 from different places. 



Green zoisite from Arendal; density, 3*17. 



Silica 37-32 



Alumina 22-85 



Lime 2203 



Magnesia 0*77 



Peroxide of iron 11'56 



Protoxide of iron 1'86 



Carbonic acid 2*64 



Water 029 



99-32 

 Green zoisite from Achmatowsk ; density, 3*33. 



Silica 37-32 



Alumina 22-85 



Lime 22-03 



Magnesia 0- 7 7 



Peroxide of iron 11*56 



Protoxide of iron 1'86 



Carbonic acid 2'64 



Water 0'56 



99-59 

 Green zoisite from Schumnaja ; density, 3*43. 



Silica 36-45 



Alumina 24*92 



Lime 2245 



Peroxide of iron 9*54 



Protoxide of iron 3*25 



Carbonic acid 2'73 



Water 0*77 



100*11 

 Pistazite from Arendal, in large blackish-green crystals ; density, 

 3*49. 



Silica 36-79 



Alumina 21-24 



Lime 21-27 



Peroxide of iron 12*96 



Protoxide of iron 5*20 



Carbonic acid 2'31 



Water 0*55 



100*32 



