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SCIENTIFIC MANUAL. 



15 



The following is the analysis of South Carolina Phosphate Rock: 



Sulphuric Acid 2.50 



Oxide of Iron 1.85 



Alumina, and a little Fluorine 4.64 



Insoluble Silicious matter and Soluble 



Silica 15.31 



Carbonic Acid 2.60 



Moisture 1.91 



Orgauic Matter and Water, of combi- 

 nation* 4.05 



Posphoric Acid 26.28 



Magnesia 0.24 



Lime 39.78 



Potash 0. 20 



Soda ,, 0.63 



Chloride Sodium 0.05 



100.00 



*Contains, .Nitrogen 0.09 



Equal to Ammonia 0.11 



