COMMERCIAL FERTILIZERS. 



291 



Canada Wood Afthcs. 

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



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



Moisture at 100° C, 

 Ash calcined, . 

 Calcium oxide. 

 Magnesium oxiilc, . 

 Potassium oxidii. 

 Phosphoric acid, 

 Insoluble matter. 



Per cent. 

 15.00 



60.40 

 35.22 

 3.24 

 5.50 

 2.53 

 9.05 



Fish Pomace. 

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



Somerset, M 



Moisture at 100° C, 



Nitrogen, 



Total phosphoric acid, 



Revei'ted phosphoric aci I 



Insoluble phosphoric acit 



ass.) 



Per cent. 



45.10 

 5.17 

 3.66 

 1.73 

 1.93 



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 53 



