10 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble " " 



Reverted " " 



Insoluble " " 



Nitrogen, 

 Potassium oxide. 

 Insoluble matter, 



Valuation per 2,000 lbs, 

 300. Chittenden's Coi 



Slate & DeWolf, Greenfield, Mass. 



Guaranteed composition : ammonia, 4 to 6 per cent, 

 (equivalent to nitrogen, 3.3 to 5 per cent.) ; total phos- 

 phoric acid, 8 to 10 per cent. ; soluble and available phos- 

 phoric acid, 6 to 8 per cent. ; bone phosphate, 18 to 22 per 

 cent. ; potassium sulphate, 8 to 10 per cent. 



301. Bradley's XL. Superphosphate of Lime. Collected of Gar- 

 field & Procter, Fitchburg, Mass. 



Guaranteed composition: nitrogen, 2.5 to 3.25 per cent, 

 (equivalent to ammonia, 3 to 4 per cent.) ; soluble phos- 

 phoric acid, 7 to 8 per cent. ; reverted phosphoric acid, 2 

 to 3 per cent. ; available phosphoric acid, 9 to 11 per cent. ; 

 total phosphoric acid, 11 to 14 per cent. ; insoluble phos- 

 phoric acid, 2 to 3 per cent. ; potassium oxide, 2 to 3 per 

 cent. ; potassium sulphate, 3.7 to 5.55 per cent. 



302. Davidge's A. A. Ammoniated Bone Superphosphate. Manu- 

 factured by Russell Coe's Co., N. Y. Collected of A. B. 

 Lawrence & Co., Fitchburg, Mass. 



Guaranteed composition: moisture, 10 to 15 per cent.; 

 ammonia, 2 to 3 per cent, (equivalent to nitrogen 1.65 to 

 2.5 per cent.) ; soluble and available phosphoric acid, 9 to 

 11 per cent. ; insoluble phosphoric acid, 1 to 2 per cent. ; 

 total phosphoric acid, 10 to 12 per cent. ; potassium oxide, 

 1.5 to 2.5 per cent. 



303. Dow's Ground Bone Fertilizer. Collected of T. Cushing & 

 Co., Fitchburg, Mass. 



Guaranteed composition: ammonia, 2.5 to 3 per cent, 

 (equivalent to nitrogen 2 to 2.5 per cent.) ; phosphoric acid, 

 18 to 22 per cent. ; potassium sulphate, 3 to 3^ per cent. 



