COMMERCIAL FERTILIZERS. 



38S 



sinm oxide, 2 to 3'^ per cent. ; ammonia, 7 to 8 per cent, 

 (equivalent to nitrogen, 6 to 6.6 per cent.). 



Moisture at 100'' C, 

 Total jjhosphoric acid, . 

 Soluble [)hosplioric acid, 

 Ilev(>rte(l phosijlioric acid, 

 Tnsolul)le phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : 



144. pounds of soluble phosphoric acid, 



28.6 pounds of reverted phosphoric acid, 



43. pounds of insoluble phosphoric acid, 



4 1.4 pounds of jJotassium oxide, . 

 128 2 i^ounds of nitrogen, 



$38 47 

 Allen's Fertilizer. 



(Allen, Richardson & Co., Boston; collected of Allen, Richardson & Co., 44 Kilby 

 Street, Boston, Mass.) 



Guaranteed composition : Total phosphoric acid, 6 to 9 

 per cent. ; potassium oxide, 4 to 5 per cent. ; ammonia, 2\ 

 to 3^ per cent, (equivalent to nitrogen, 2 to 2.9 per cent.). 



Per cent. 



Moisture at 100° C, 31.35 



Total iDhosi^horic acid, . 7.22 



Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : — 



106.8 i^ounds of soluble phosphoric acid, 

 24. pounds of reverted phosphoric acid, 

 13.6 pounds of insoluble i^hosphoric acid, 

 76.8 pounds of potassium oxide, . 

 63 4 pounds of nitrogen. 



.$24 79 



Acushnet Fertilizer. 



TMamifacturcil by George Hathaway, Acushnet, Mass.; collected of George Hatha- 

 way, Acushnet, Mass.) 



No guarant}'^ given. 



