386 



BOAED OF AGRICULTURE. 



verted phosphoric acid, 2 to 3 per cent. ; insoluble phospho- 

 ric acid, 2 to 3 per cent. ; potassium oxide, 2 to 3 per cent, 

 (equivalent to potassium sulphate, 3.7 to 5.55 per cent.) ; 

 nitrogen, 2^ to 3^ per cent, (equivalent to ammonia, 3 to 4 

 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoi'ic acid. 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Xitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



181.6 i^ounds of soluble phosphoric acid, 

 58.8 pounds of reverted phosphoric acid, 

 29.-1: pounds of insoluble phosphoric acid, 

 2S 4 pounds of potassium oxide, . 

 44 2 pounds of nitrogen. 



Per cent. 



12.08 

 13.49 

 9.08 

 2.94 

 1.47 

 1.42 

 2.21 

 7.18 



$14 53 



4 41 



88 



1 56 



7 51 



§28 89 



Bradley's Dry Fish Guayio. 

 (Collected of D. J. Wright, Northampton, Mass.) 



Guaranteed composition : Total phosphoric acid, 6 to 8 

 per cent. ; ammonia, 10 to 12 percent, (equivalent to nitro- 

 gen, (S to 10 per cent.). 



Moisture at 100" C, 

 Total phosphoric acid, , 

 Solulile phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



27.6 pounds of soluble phosphoric acid, 

 67.4 pounds of reverted phosphoric acid, 

 42.2 pounds of insoluble phosphoric acid, . 

 172.2 pounds of nitrogen, .... 



rer cent. 



9.41 

 6.86 

 1.38 

 3.37 

 2.11 

 8.61 

 8.60 



$2 21 

 5 06 

 2 11 



29 27 



$38 65 

 Standard Fertilizer. 



(Collected of H. C. Haskell, Deerfield, Mass.) 



Guaranteed composition : Available phosphoric acid, 9 to 



13 per cent. ; insoluble phosphoric acid, 2 to 3 per cent. ; 



