ANALYSIS. -J 1 1 



Soluble Silica 



Insoluble Silica and Sand 



Sulphuric Acid 6 



Phosphoric Acid 1.3 



"Water 8.0 



Carbonic Acid, etc 3.8 



100.0 



This is an average of three analyses copied from Prof. Geo. II. Cook s 

 report of the Geology of New Jersey. According to this estimate 

 one ton (2000 Ibs.) of Green Sand Marl contains 



Lime I 1 



Magnesia 



Potash 



Soluble Silicic Acid 648 



Sulphuric Acid 



Phosphoric Acid 



(Equal to Phosphate of Lime 56^ Ibs.) 



For the analysis of fertile and barren soils, see page 63. 

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