518 BOARD OF AGRICULTURE. 



Valuation per two thousand pounds : — 



52.8 pounds of soluble phosphoric acid, . 

 60.8 pounds of reverted phosphoric acid, 

 67.6 pounds of insoluble phosphoric acid, 

 72.0 pounds of potassium oxide, 

 76.2 pounds of nitrogen, .... 



$27 21 



J. A. Tucker & Co.'s Original Hay State Bone Superphosphate. 

 (Collected of Hanscom Bros., Haverhill, Mass.) 



Guaranteed composition ; Total phosphoric acid, 10 to 12 

 per cent. ; soluble and reverted phosphoric acid, 9 to 9^ 

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

 to 3^ per cent, (equivalent to nitrogen, 2^ to 2.9 percent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



21.17 



11.51 



8.41 



.42 



2.68 



2.10 



3.40 



.47 



Valuation per two thousand pounds : 



168.2 pounds of soluble phosphoric acid, 



8.4 pounds of reverted phosphoric acid, 

 53.6 poiuids of insoluble phosphoric acid, 

 42.0 pounds of potassium oxide, . 

 68.0 pounds of nitrogen. 



$29 39 



Pure Raw Bone Fertilizer. 



(Manufactured by A. 



L. Ames, Peabody, Mass. 

 Ipswich, Mass.) 



collected of J. M. Caldwell^ 



Guaranteed composition : Available phosphoric acid, 8 

 to 11 per cent. ; potassium oxide, 2 to 3 per cent, (equiva- 

 lent to potassium chloride, 4 to 6 per cent.) ; ammonia, 2^ 

 to 3j^ per cent, (equivalent to nitrogen, 2 to 2.9 per cent.). 



