THE RELATIONS OF GEOLOGY TO AGRICULTURE. 



557 



IV. 

 Quinnipiac Soluble Nitrogenous Phosphate. 



Moisture and volatile matter, 

 Non -volatile matter, . 

 Soluble phosphoric acid, . 

 Reduced phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen (3.14 ammonia), 



Valuation per ton of 2000 pounds. 



110.0 pounds of soluble phosphoric acid, 

 49.0 pounds of reduced phosphoric acid, 

 79.4 pounds of insoluble phosphoric acid, . 

 51.8 pounds of nitrogen (62.8 ammonia), . 



$46.74 



Fale's Fertilizer. 



Moisture and volatile matter, 

 Non-volatile matter, . 

 Soluble phosphoric acid, . 

 Reduced phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen (3.23 ammonia), 



Valuation per ton of 2000 pounds. 



30.00 pounds of soluble phosphoric acid, 



49.80 pounds of reduced phosphoric acid, 



81.20 pounds of insoluble phosphoric acid, 



53.20 pounds of nitrogen (64.6 ammonia), 



VI. 



Guano (Guanape Islands). 



Valuation per ton of 2000 pounds. 

 238.80 pounds of phosphoric acid (at 12.64 cents per pound), 



$32.28 



$30.18 



