COMMERCIAL FERTILIZERS. 



241 



XVIII. 



Soluble Pacific Guano. 



(Messrs. Glidden St Curtis, Boston, Mass. ; collected of Charles E. Wilder, 



Worcester, Mass.) 



Per cent. 



15.27 



47.G6 



52.34 



13.12 



7.23 



2.70 



3.19 



2.97 



2.60 



5.98 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 

 Insoluble matter . 



Valuation per ton of two thousand pounds 



144.6 pounds of soluble phosphoric acid 

 54 pounds of reverted phosphoric acid 

 63.8 pounds of insoluble phosphoric acid 

 59.4 pounds of nitrogen 

 52 pounds of potassium oxide . 



117 35 



4 86 



3 83 



11 88 



2 34 



$40 26 



XIX. 



W. H. Bowler's Lawn- Dressing. 



(Collected of Messrs. Wilder & Puffer, Springfield, Mass- 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Total phosphoric acid . 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Total nitrogen 

 Potassium oxide . 

 Insoluble matter, sand, etc. 



Valuation per ton of two thousand pounds : — 



45 pounds of soluble phosphoric acid 

 59.6 pounds of reverted phosphoric acid 

 3.2 pounds of insoluble phosphoric acid 



134.6 pounds of nitrogen 



110 pounds of potassium oxide . 



) 



Per cent. 



9.69 



64.37 



35.63 



5.39 



2.25 



2.98 



.16 



6.73 



5.50 



.92 



$5 40 



5 37 



20 



26 92 

 4 95 



2 84 



