COMMERCIAL FERTILIZERS. 



219 



to 6 percent. ; nitrogen, 4.25 to 5 per cent., or ammonia, S' 

 to 6 per cent. ; potassium oxide, 4 to 5 per cent. 



Moisture at 100° C, . 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen (in organic matter), 

 Nitrogen (in ammonia salts), . 

 Nitrogen (in nitrates), . 



Valuation per two thousand pounds : — 



72.2 pounds of soluble phosphoric acid, 

 25.8 pounds of reverted phosphoric acid, 

 77. pounds of insoluble phosphoric acid, 

 112.8 pounds of potassium oxide, . 

 46. pounds of niti'ogen (in organic matter), 

 8.8 pounds of nitrogen (in ammonia salts), 

 18.6 pounds of nitrogen (in nitrates), . 



Per cent. 



10.38 



8.75 



3.61 



1.29 



3.85 



5.64 



2.30 



.44 



.93 



$36 00 



BaiigK's Double Eagle Phosphate. 

 (Sent on by John E. Russell, Secretary of State Board of Agriculture.) 



Guaranteed composition : soluble and reverted (available) , 

 5 to 6 per cent. ; insoluble phosphoric acid, 3.21 to 3.66 per 

 cent. ; ammonia, 2 to 2.5 per cent. 



Valuation per two thousand pounds : 



89.8 pounds of soluble phosphoric acid, 

 23.8 pounds of reverted phosphoric acid, 

 63.8 pounds of insoluble phosphoric acid, 

 44. pounds of nitrogen. 



125 73 



