352 



BOARD OF AGRICULTURE. 



Valuation per two thousand pounds : — 



113.8 pounds of 

 76.6 pounds of 

 74.4 pounds of 

 81.2 pounds of 

 22.4 pounds of 

 20.8 pounds of 

 20. pounds of 



soluble phosphoric acid, 

 reverted j^hosphoric acid, 

 insoluble phosphoric acid, . 

 jjotassium oxide, . 

 nitrogen (in organic matter), 

 nitrogen (in nitrates), . 

 nitrogen (in ammonia salts) , 



$31 89 



C W. Belknap & Son's Pure Ground Bone Fertilizer. 

 (Collected of J. & J. A. Rice, Worcester, Mass.) 



Guaranteed composition : Total phosphoric acid, 24 to 38 

 per cent. ; ammonia, 3.35 to 4.41 per cent, (equivalent to 

 nitrogen, 2.8 to 3.63 per cent,). 



I'lr cent. 



10 56 



23.15 



none. 



6.32 



16.83 



3.47 



24 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble i^hosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Niti'ogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



126.4 pomids of reverted phosphoric acid, 

 336.6 pomids of insoluble phosphoric acid, . 

 69.4 pounds of nitrogen, .... 



$9 48 



13 46 



9 72 



$32 66 



Bosivorth Brothers' Superpliosphate of Lime. 

 (Collected of Wilson & Holden, Worcester, Mass.) 



Guaranteed composition: Soluble phosphoric acid, 7 to 8 

 per cent. ; reverted phosphoric acid, 4 to 5 per cent. ; in- 

 soluble phosphoric acid, 2 to 5 per cent. ; potassium oxide, 

 2 to 3 per cent. ; nitrogen, 2 to 2\ per cent. 



Per cent. 



8.90 

 14.76 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



5.25 



4.69 

 4.82 

 161 

 2 54 



.85 



