THE RELATIONS OF GEOLOGY TO AGRICULTURE. 557 

 IV. 



QUINNIPIAC SOLUBLE NITROGENOUS PHOSPHATE. 



Moisture and volatile matter, 55.51 per cent. 



Non-volatile matter, 44-49 



Soluble phosphoric acid, 5.50 &quot; 



Reduced phosphoric acid, 2.45 &quot; 



Insoluble phosphoric acid, 3.47 &quot; 



Nitrogen (3.14 ammonia), 2.59 &quot; 



Valuation per ton of 2000 pounds. 



no.o pounds of soluble phosphoric acid, $19-87 



49.0 pounds of reduced phosphoric acid, 6.67 



79.4 pounds of insoluble phosphoric acid, 4.76 



51.8 pounds of nitrogen (62.8 ammonia), ....... 15.54 



$46.74 

 V. 



FALE S FERTILIZER. 



Moisture and volatile matter, 39-87 per cent. 



Non-volatile matter, 60.13 &quot; 



Soluble phosphoric acid, 1.50 &quot; 



Reduced phosphoric acid, 2.49 &quot; 



Insoluble phosphoric acid, 4.06 &quot; 



Nitrogen (3.23 ammonia), 2.66 &quot; 



Valuation per ton of 2000 pounds. 



30.00 pounds of soluble phosphoric acid, $4.88 



49.80 pounds of reduced phosphoric acid, ....... 6.57 



81.20 pounds of insoluble phosphoric acid, . . . . . . .4.87 



53.20 pounds of nitrogen (64.6 ammonia), J 5-96 



$32-28 

 VI. 



GUANO (GUANAPE ISLANDS). 



Moisture and volatile matter 57-38 54-17 54-98 



Non-volatile matter, 42.62 45-83 45.02 



Sand, IO-94 l2 -47 13- 10 



Total phosphoric acid, ir -59 12.08 11.25 



Nitrogen (11.78 ammonia), 9.70 



Potassa, 2. 02 



Valuation per ton of 2000 pounds. 

 238.80 pounds of phosphoric acid (at 12.64 cents per pound), $30.18 



