270 



BOARD OF AGRICULTURE. 



Valuation per ion of 2,000 pounds. 



12.8 pounds of soluble phosphoric acid, 

 304.2 " of insoluble 

 13.8 " of potassium oxide, . 

 46.6 " of nitrogen, 



$1 60 



18 25 



1 04 



9 79 



$30 68 



III. — Sea-Fowl Guano of Messrs. Wm. L. Bradley & Co. 



Valuation per ton of 2,000 pounds. 



160.8 pounds of soluble phosphoric acid, 

 107.8 " of insoluble 



38.0 " of reduced 



53.8 " of nitrogen, 



44.6 " of potassium oxide, . 



$20 10 



6 49 



3 42 



11 30 



3 36 



$44 67 



IV. — Superphosphate XL of Messrs. Wm. L. Bradley & Co. 



(Collected of W. S. Westcott, in Amherst, Mass.) 



Total phosphoric acid, 14.50 per cent. 



Soluble " - 8.51 



Reduced " " 1.09 



Insoluble " " 4.90 



Nitrogen, 2.50 



Moisture, 21.16 



Valuation per ton of 2,000 pounds. 



170.20 pounds of soluble phosphoric acid, 

 21.80 " of reduced 

 98.00 " of insoluble 

 50.00 " of nitrogen, 



\2l 27 



1 96 



5 88 



10 50 



$39 61 



