1814.] Mineral, Animal, and Vegetable Substances, 215 



Silica 54 



Alumina 24 



Magnesia ] -5 



Oxide of iron and manganese T25 



Water 2 



Potash and soda 1 7«25 



1 OCT- 00 

 The mineral called lytrode is composed of 



Silica 44*62 



Alumina 3736 



Lime 275 



Oxide of iron 1-00 ' 



Soda 8-00 



Water 6-00 



Magnesia and manganese Trace 



9973 



The mineral called raz.onmqff'skin is found at Kosemutz, accom* 

 panied with pimelite and chrysoprase. It is composed of 



Silica 50 



Alumina 16-S8 



Water 20 



Oxide of nickel 075 



Magnesia, oxide of iron, and lime .... 2 



Potash 10-37 



10000 



The zircon found at Friedrschwaerm, in Norway, is composed of 



Zirconia G4 



Si I ica 34 



Oxide of titanium 1 



Oxide of iron , .^ 025 



9925 



Earthy wavellite is composed of 



Alumina 817 



Water 13-5 



Lime 4-0 



Magnesia 0\S3 



Potash 0-5 



100-53 



