COMMERCIAL FERTILIZERS. 



291 



Canada Wood Ashes. 

 (Collected of E. Hobart, North Aiulierst, Mass.) 



Moisture, 

 Phosphoric acid, 

 Potassium oxide, 

 Calcium oxide, 

 Magnesium o.xide. 

 Insoluble matter (in acids). 



Canada Ashes. 

 (Collected of E. M. Rouchc, South Deerficld, Mass.) 



Moisture at 10)° C., 



Ash, 



Calcium oxide, 



Magnesium oxide, 



Potassium oxide, 



Phosphoric acid. 



Insoluble matter, 



Catiada Ashes. 

 (Collected of A. Montague, Sunderland, Mass.) 



Moisture at 100° C, 

 Ash calcined, . 

 Calcium oxide, 

 Magnesium oxide, . 

 Potassium oxide. 

 Phosphoric acid. 

 Insoluble matter. 



Per cent. 



28.57 

 1.07 

 5.06 



27.02 

 2.75 

 9.34 



Per cent. 



10.72 

 G2.00 

 40.88 

 3.33 

 4.95 

 2.02 

 6.30 



Per cent. 



15.00 



60.40 



35.22 



3.24 



5.50 



2.53 



9.05 



Fish Pomace. 



(From W. L. Brightraan's Works, Tiverton, R. I.; collected of 0. P. Gardner, 



Somerset, Mass.) 



Per cent. 



Valuation per two thousand pounds : — 



103.4 pounds of nitrogen, .... 



34.6 pounds of reverted phosphoric acid, 

 38.6 pounds of insoluble phosphoric acid. 



$20 68 

 3 11 

 1 74 



$25 63 



