354 



BOARD OF AGRICULTURE. 



Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Insoluble matter 



Valuation per ton of two thousand pounds 



88.8 pounds of soluble phosphoric acid 

 143 pounds of reverted phosphoric acid 

 54.8 pounds of insoluble phosphoric acid 

 52.8 pounds of nitrogen 



Standard Superphosphate. 

 (Collected of William E. Earle, Worcester, Mass.) 



Moisture at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 

 Magnesia 

 Insoluble matter 



Valuation per ton of two thousand pounds 



166.4 pounds of soluble phosphoric acid 

 4.8 pounds of reverted phosphoric acid 

 48 6 pounds of insoluble phosphoric acid 

 47.2 pounds of nitrogen 

 37.4 pounds of potassium oxide . 



BowJcers Hill and Drill Fertilizer. 

 (Collected of Messrs. Puffer & Wilder, Springfield, Mass.) 



Moisture 



Organic and volatile matter 



Ash constituents 



Total phosphoric -icid 



Soluble phosphoric acid . 



Reverted phosphoric acid 



Insoluble phosphoric acid 



Per cent. 



14.33 

 4.44 

 7.15 

 2.74 

 2.64 

 1.13 



$39 83 



Per cent. 



23.61 



51.13 



42.87 



10.99 



8 32 



.24 



2 43 



2.36 



1.87 



1.16 



3.77 



120 80 



43 



2 92 



11 33 



1 87 



§37 35 



Per cent. 



12.10 



51.16 



48.84 



14.17 



7.52 



1.34 



5.31 



