356 



BOARD OF AGRICULTURE. 



Sparroro's Grass Fertilizer. 

 (Collected of G. W. Atkinson, Reading, Mass.) 



Guaranteed composition : Total phosphoric acid, 8 to 10 

 per cent. ; soluble and reverted phosphoric acid, 4 to 6 per 

 cent. ; potassium oxide, 4 to 5 per cent. ; nitrogen, 4.11 te 

 4.94 per cent. 



Moisture at 100= C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted jihosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen (in ammonia salts), 

 Niti'ogen (in nitrates), . 

 Nitrogen (in organic matter) , 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



Per cent. 



12 38 

 11.84 

 2.43 

 4.18 

 5.23 

 4.53 

 1.21 

 .94 

 1.96 

 1.00 



48.6 pounds of 

 83.6 pounds of 

 104.6 pounds of 

 90.6 i^oimds of 

 24 2 pounds of 

 18.8 pounds of 

 39.2 pounds of 



soluble phosphoric acid, 

 reverted phosphoric ac'd, 

 insoluble j^hosphoric acid, . 

 potassium oxide, , 

 niti'ogen (in ammonia salts), 

 nitrogen (in nitrates) , . 

 nitrogen (in organic matter) , 



$31 77 

 Maynard's Perfect Mineral Fertilizer. 

 (Collected of C. A. Maynard, Lawrence, Mass.) 



Guaranteed composition : Moisture, 19.4 per cent. ; chlo 

 rine, 7.69 per cent. ; sulphuric acid, 2.61 per cent. ; car- 

 bonic acid, 22.25 per cent. ; total phosphoric acid, 1.37 per 

 cent. ; calcium oxide, 33.39 per cent. ; sodium oxide, 7.55 

 per cent. ; potassium oxide, .44 per cent. ; ferric oxide, 

 1.03 per cent. ; insoluble matter, 5.15 per cent. ; soluble 

 and available phosphoric acid, 8 to 10 per cent. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Magnesium oxide, . 

 Calcium oxide. 

 Sodium oxide, 



I'er cent. 



23.05 



.76 



trace. 



.74 



.83 



1.71 



36.39 



8.35 



