COMMERCIAL FERTILIZERS. 



199 



Bowker^s Dry Fish. 

 (Collected of C. T. Brown, Northampton, Mass.) 



Guaranteed composition : ammonia 10 to 12 per cent, 

 (equivalent to nitrogen 8.3 to 9.9 per cent.). 



Per cent. 



Moisture at 100° C, 9.02 



Total phosphoric acid, 

 Soluble phosphoric acid, > 

 Reverted phosphoric acid,/ 



Insoluble phosphoric acid, 4.39 



Nitrogen, 8.32 



Insoluble matter, .... ... 3.25 



8.07 

 3 68 



Valuation per two thousand pounds : 



73.6 pounds of reverted phosphoric acid, 

 87.8 pounds of insoluble phosphoric acid, 

 166.4 pounds of nitrogen. 



Dry Fish Guano (C. Island). 



$5 89 



5 27 



38 27 



$19 43 



(Geo. W. Miles' Co., Milford, Ct.; collected of D. F. Wright, Northampton, 



Mass.) 



Guaranteed composition : bone phosphate 10 to 14 per 

 cent, (equivalent to phosphoric acid 4.58 to 6.41 percent.) ; 

 ammonia 6 to 8 per cent (equivalent to nitrogen 4.9 to 6.7 

 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen, .... 

 Insoluble matter, 



Valuation per two thousand pounds 



43 6 pounds of soluble phosphoric acid, 

 70.8 pounds of reverted phosphoric acid, 

 45.2 pounds of insoluble phosphoric acid, 

 47.2 pounds of potassium oxide, 

 77.4 pounds of nitrogen, .... 



Per cent. 

 18.96 

 7.98 

 2.18 

 3.54 

 2.26 

 2.36 

 3.87 

 2.85 



$32 98 



