COMMERCIAL FERTILIZERS. 



349 



ChurcWs Fish and Potash. 

 (Collected of Earlc & Peckham, Worcester, Mass ) 



Guaranteed composition : Total phosphoric acid, 5.32 per 

 cent. ; potassium oxide, 3.58 per cent. ; ammonia, 5.08 per 

 cent, (equivalent to nitrogen, 4.18 per cent.). 



Per cent. 



Moisture at 100' C, 29 80 



Total jjhosphoric acid, . 

 Soluble lihosjjhonc acid, 

 Reverted jDhosiphoric acid, 

 Insoluble jjliosphoric acid, 

 Potassium oxide, . 

 Niti"ogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : 



17.2 pounds of soluble phosphoric acid, 

 42.8 pounds of I'everted phosphoric acid, 

 12 4 pounds of insoluble phosphoric acid, 

 85 4 povmds of potassium oxide, . 

 72.0 pounds of nitrogen, 



$21 37 

 StocJcbridge's Manure {Seeding down). 

 (Collected of Earle & Peckham, Worcester, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 2.5 to 

 3 per cent. ; available phosphoric acid, 14 to 15 per cent. ; 

 potassium oxide, 4 to 5 per cent. ; ammonia, 3 to 4 per cent, 

 (equivalent to nitrogen, 2.5 to 3.3 per cent.). 



Per cent. 



Valuation per two thousand pounds : — 



148.4 povmds of soluble phosphoric acid, 

 70.2 pounds of reverted phosphoric acid, 

 35.4 pounds of insoluble pliosphoric acid, 

 50.6 joounds of potassium oxide, . 

 55.4 i^ounds of niti'ogen, 



$29 77 



