550 



BOARD OF AGRICULTURE. 



Valuation per two thousand pounds : — 



156.8 pounds of soluble phosphoric acid, 

 46. G pounds of reverted phosphoric acid, 

 57.8 pounds of insoluble phosphoric acid, 

 36.0 pounds of potassium oxide, . 

 58.6 pounds of nitrogen, 



J29 56 



Randall's Flour of Bone. 

 (Collected of Benjamin Randall, at works, Boston, Mass.) 



Guaranteed composition : Total phosphoric acid, 20 to 25 

 per cent. ; ammonia, 3 to 4 per cent, (equivalent to nitro- 

 gen, 2.5 to 3.3 per cent.) ; sodium chloride (common salt), 

 5 to 8 per cent. 



I'er cent. 



9.82 

 13.49 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosplioric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Insoluble matter, , 



Valuation per two thousand pounds : — 



9.4 pounds of soluble phosphoric acid, 

 84.G i:)Ounds of reverted phosphoric acid, . 

 175.8 pounds of insoluble phosphoric acid, . 

 132.8 pounds of nitrogen, .... 



.47 

 4.23 

 8.79 

 6.64 



.84 



80 75 

 6 35 

 8 79 



19 92 



535 81 



Jefferds' Animal Fertilizer. 

 (Collected of J. G. Jefferds, at works, Worcester, Mass.) 



Guaranteed composition : Total phosphoric acid, 14 to 

 16 per cent. ; potassium oxide, 5 to 7 per cent. ; ammonia, 

 5 to 7 per cent, (cqidvalent to nitrogen, 4.1 to 5. 70 per 

 cent.). 



I'cr cent. 



6.15 



15.09 



.37 



Moisture at 100° C, 

 Total pliosplioric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



5.71 

 9.01 

 5.36 

 5.53 

 1.32 



