544 BOARD OF AGRICULTURE. 



Valuation per two thousand pounds : — 



26.8 pounds of soluble phosphoric acid, 

 42.6 pounds of reverted phosphoric acid, 

 87.2 pounds of insoluble phosphoric acid, 

 62.6 pounds of potassium oxide, . 

 57.6 pounds of nitrogen, 



^19 20 



Standard Peruvian Guano, 1. — Guaranteed. 

 (Collected of P. Williams & Co., Taunton, Mass.) 



Guaranteed composition : Total phosphoric acid, 13 to 17 



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

 to 10 per cent, (equivalent to nitrogen, 7.4 

 cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosijhoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



18.8 pounds of soluble phosphoric acid, 

 152.6 pounds of reverted phosjihoric acid, 

 121.6 povmds of insoluble phosphoric acid, 



58.6 pounds of potassium oxide, . 

 158.6 poimds of nitrogen. 



•ammonia, 9 

 to 8.2 per 



Per cent. 



10.43 



14.65 



.94 



7.63 



6.08 



2.93 



7.93 



8.42 



$1 50 

 11 45 



3 



2 



27 



65 

 49 

 76 



$46 85 



Bed Beach Bone SuperpJiospJiate. 

 (Collected of S. S. Paine & Bros., New Bedford, Mass.) 

 Guaranteed composition : Total phosphoric acid, 10 to 

 15 per cent. ; potassium oxide, 2.26 per cent. ; ammonia, 

 3.11 per cent, (equivalent to nitrogen, 2.56 per cent.). 



Per cent. 



Moisture at 100° C 17.29 



Total phosphoric acid, 9.83 



Soluble phosphoric acid, 8.33 



