COMMERCIAL FERTILIZERS. 



369 



Valuation per 



166.4 pounds of 

 34 2 pounds of 

 50.6 pounds of 

 32. pounds of 

 42. pomids of 



two thousand pounds ; 



soluble phosphoric acid, 

 reverted phosiihoric acid, 

 insoluble phosphoric acid, 

 potassium oxide, . 

 nitrogen. 



$13 31 

 2 57 

 1 52 

 1 36 

 7 14 



$25 90 

 SjKirrow's Bone and Potash Fertilizer (B). 

 (Collected of J. H. Bourne, Marshfiekl, Mass.) 



Guaranteed composition: Total phosphoric acid, 10 to 12 

 per cent. ; soluble and reverted phosphoric acid, 9 to 11 per 

 cent. ; potassium oxide, 4 to 5 per cent. ; nitrogen, 2\ to 

 3.3 per cent, (equivalent to ammonia, 3 to 4 per cent.). 



Percent. 



Moisture at 10(P C, 19.75 



Total phosplioric acid, 10.45 



Soluble phosphoric acid, 8.32 



Reverted phosphoric acid, 

 Insoluble phosphoric acid, . 

 Potassium oxide, ..... 

 Nitrogen (in ammonia salts), 

 Niti'ogen (in organic matter), 

 Insoluble matter, 



Valuation per two thousand pounds : — 



166.4 pounds of soluble phosphoric acid, 

 36.4 pomids of revei'ted phosphoric acid, 

 6.8 pounds of insoluble phosphoric acid, . 

 88.8 pounds of potassium oxide, . 

 26.4 pounds of nitrogen (in ammonia salts), 

 35. pounds of nitrogen (in organic matter), 



$30 63 

 Brightman & Co.'s Dry Ground Menhaden Fish. 

 (Collected of Pease & Easterbrook, Fall River, Mass.) 



Guaranteed composition: Ammonia, 10 to 12 per cent, 

 (equivalent to nitrogen, 8.2 to 10 per cent.) ; bone phos- 

 phate of lime, 15 to 20 per cent. 



