492 



BOAED OF AGRICULTURE. 



StocTcbridge's Manure : Potatoes and Vegetables. 

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



Guaranteed composition ; Soluble and reverted phos- 

 phoric acid, 8 to 10 per cent. ; potassium oxide, 5 to 6 per 

 cent. ; nitrogen, 3^ to 4| per cent, (equivalent to ammonia, 

 4 to 5 per cent.). 



Valuation per two thousand pounds : 



152. pounds of soluble phosphoi'ic acid, 

 37.4 jjounds of reverted phosphoric acid, 

 20.4 pounds of insoluble phosphoric acid, 

 76.4 pounds of potassium oxide, . 

 76.4 pounds of nitrogen. 



832 20 



StocTcbridge's Manure : Corn and Grain. 

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



Guaranteed composition : Total phosphoric acid, 7 to 9 

 per cent. ; available phosphoric acid, 6 to 7 per cent. ; po- 

 tassium oxide, 4 to 5 per cent. ; ammonia, 4 to 5 per cent, 

 (equivalent to nitrogen, 3.25 to 4.25 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Lisoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



14.66 

 11.34 

 6.72 

 3.08 

 1.54 

 4.18 

 2.83 

 2.57 



