EXPERIMENT STATION REPORT. 



349 



'SI 



0-2 



41 



Cents per lb. 

 Phosphoric acid, insoluble, in fine medium bone, 

 Phosphoric acid, insoluble, in medium bone. 

 Phosphoric acid, insoluble, in coarse medium bone, . 

 Phosphoric acid, insoluble, in coarse bone, bone ash, and 



bone black, 4 



Phosphoric acid, insoluble, in fine ground rock phosphate, 2.75 



Potash, in high grade sulphate, 7 



Potash, in low grade sulphate and kainite, . . . 4J 



Potash, in muriate or potassium chloride, . . . . 4J 



V. Fertilizer Analyses. 



Dry Ground Fish. 

 (Sent from South Hadley Falls, Mass.) 

 Moisture, at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, \ 

 Reverted phosphoric acid, / 

 Insoluble phosphoric acid, 

 Nitrogen, 



Valuation per two thousand pounds, $36.53. 



10.38 

 6.00 



2.82 



3.18 

 6.13 



Castor Pumice. 

 (Collected of D. A. Horton, Northampton, Mass.) 



"Moisture, at 100° C, . 10.18 



Total phosphoric acid, 2.13 



Nitrogen (18 cents per pound), 5 69 



Potassium oxide, . . ' 0.92 



Valuation per two thousand pounds, $23.84. 



1. Dry Fish, sent by Franklin Farmers* Club. 



2. Dry Fish, sent by Milo L. Smith, Smith's Ferry, Mass. 



3. Half-dry Dog Fish Pumice, sent on from Portsmouth, R. I. 



