318 



BOARD OF AGRICULTURE. 



8.8 pounds of nitrogen (in nitrates), 

 56.6 pounds of nitrogen (in organic matter), 

 55.6 pounds of potassium oxide, . 



Superphosj)hate of Lime. 



ei 58 



11 32 



2 36 



$36 85 



(Bosworth Bros., Putnam, Conn. ; collected of Wilson & Holden, Worcester, Mass.) 



Guaranteed composition : Nitrogen 2 to 21 per cent. ; sol- 

 ul)le phosphoric acid, 4 to 5 per cent. ; reverted phosphoric 

 acid, 3 to 5 per cent, ; insoluble phosphoric acid, 7 to 9 per 

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



Per cent. 



Moisture at 100° C 14.75 



Total pliosphoric acid, 13.80 



Soluble phosphoric acid, 3.45 



Reverted phosphoric acid, 4.96 



Insoluble phosphoric acid, 6.39 



Potassium oxide, 2.10 



Nitrogen, 2.54 



Insoluble matter, .80 



Valuation per two thousand pounds ; — 



69. pounds of soluble phosphoric acid, . . . f 6 90 



99.2 pounds of reverted phosphoric acid, . . . 8 93 



107.8 pounds of insoluble phosphoric acid, . . .4 85 



42. pounds of potassium oxide, 1 78 



50.8 pounds of nitrogen, 10 16 



$32 62 

 napes' Corn Manure. 

 (Collected of W. H. Earle & Co., Worcester, Mass.) 



Guaranteed composition ; Ammonia, 4.5 to 5 per cent, 

 (equivalent to nitrogen, 3.7 to 4 per cent.) ; phosphoric acid, 

 10 to 12 per cent. ; potassium oxide, 6 to 7 per cent. ; mag- 

 nesium, calcium, soda, sulphuric acid, etc., 70 to 80 per 

 cent. 



Per cent. 



