POTATO AND TURNIP FERTILIZERS. 331 



Soluble phosphoric acid . 



Reverted phosphoric acid 



Insoluble phosphoric acid 



Nitrogen 



Potassium oxide . . 



Insoluble matter 



Valuation per ton of two thousand pounds : — 



114.8 pounds of soluble phosphoric acid 

 1.6 pounds of reverted phosphoric acid 

 8.8 pounds of insoluble phosphoric acid 

 82.8 pounds of nitrogen 



140.0 pounds of potassium oxide . 



XIX. 



Soluble Pacific Guano. 



(Pacific Guano Co., Boston, Mass.) 



Moisture at 100° C. 

 Organic and volaitle matter 

 Ash constituents 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen . . , 



Potassium oxide 

 Insoluble matter 



$36 61 



Per cent. 



14.40 



58.64 



41.36 



7.93 



.95 



1.40 



2.50 



2.12 



4.50 



Valuation per ton of two thousand pounds : — 



158.6 pounds of soluble phosphoric acid . 

 19.0 pounds of reverted phosphoric acid 

 28.0 pounds of insoluble phosphoric acid 

 50.0 pounds of nitrogen 

 42.4 pounds of potassium oxide . 



XX. 



Ma/field Turnip-Fertilizer. 



Moisture at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Total phosphoric acid 

 Soluble phosphoric acid . 



$34 12 



Per cent. 



11.40 



55.96 



44.04 



3.82 



1.27 



