214 



BOARD OF AGRICULTURE. 



Standard Lawn Dressing. 

 (Standard Fertilizer Co. ; collected of Whittemore Bros., Boston, Mass.) 



No guarantee obtained. 



Moisture at 100° C, . 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Potassium oxide. 

 Nitrogen, .... 

 Insoluble matter. 



Per cent, 



16.00 



13.60 



9.88 



.06 



3,66 



2.66 



2.34 



.93 



Valuation per two thousand pounds : 



197.6 pounds of soluble phosphoric acid, 

 1.2 pounds of reverted phosphoric acid, 

 73.2 pounds of insoluble phosphoric acid, 

 63.2 pounds of potassium oxide, . 

 46.8 pounds of nitrogen, 



$39 25 

 Bay State Ammoniated Bone Superphosphate. 



(J. A. Tucker & Co., Boston, Mass. ; collected by H. A. Emerson, "Winchester^ 



Mass.) 



Guaranteed composition : total phosphoric acid, 12.20 per 

 cent.; sohible and reverted phosphoric acid (available), 

 9.20 per cent. ; insoluble phosphoric acid, 3.00 per cent. ; 

 ammonia, 3.29 per cent, (equivalent to nitrogen, 2.71 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 : — ' 



146.8 pounds of soluble phosphoric acid, 

 13.2 pounds of reverted phosphoric acid, 

 31. G pounds of insoluble phosphoric acid, 

 15. pounds of i^otassium oxide, 

 64. pounds of nitrogen, 



Per cent. 



27.67 



958 



7.34 



.66 



1.58 



.75 



3.20 



$16 15 



1 06 



1 90 



64 



14 72 



$34 47 



