220 



BOARD OF AGRICULTURE. 



The Economical Fertilizer. 



<Baugh and Sons, Philadelphia, Penn. ; sent on by John E, Russell, Secretary of 

 Massachusetts State Board of Agriculture.) 



Guaranteed composition : soluble and reverted phosphoric 

 acid (available) , 5 to 6 per cent. ; potassium oxide (sul- 

 phate), 4 to 5 per cent. ; ammonia, 2 to 2.5 per cent. 



Moisture at 100° C, . 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, 

 Nitrogen, .... 



Valuation per two thousand pounds : — 



62.G pounds of soluble phosphoric acid, 

 6.6 pounds of I'everted phosphoric acid, 

 93.4 pounds of insoluble phosphoric acid, 

 46.2 pounds of potassium oxide, . 

 54.8 pounds of nitrogen, 



DoWs Common-Sense Fertilizer. 



e 



Per cent. 

 8.10 

 8.68 

 3.13 

 .33 

 4.67 

 2.31 

 2.74 



$6 89 



53 



5 60 



3 23 



12 61 



$28 86 



/ 



(Collected of Parker and Gannet, Springfield, Mass.) 



Guaranteed composition : total phosphoric acid, 1 to 3 per 

 cent. ; potassium oxide, 1 to 3 per cent. ; nitrogen, 2 to 4 

 per cent. 



Moisture at 100° C, . 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, 

 Nitrogen, .... 

 Insoluble matter, 



Valuation per two thousand pounds : — 



2.4 pounds of soluble phosphoric acid, 

 19.2 pounds of reverted phosphoric acid, 



7.8 pounds of insoluble phosphoric acid, 

 22.2 pounds of potassium oxide, . 

 27. nitrogen, 



$9 42 



