40 



CONTROL SERIES No. 74 

 Muriate and High Grade Sulfate of Potash. 



Manufacturer. 



Acme Guano Co. 

 American Agricultural Chemi- 

 cal Co 



Armour Fertilizer Works . 

 Berksiiire Chemical Co. . 

 Consolidated Rendering Co. 



Eastern States Farmers' Ex 

 change 



N. V. Potash Export My., Inc. 



Muriate of Potash. 



Num- 

 ber of 

 Sam- 

 ples. 



Guaran- 

 Found. teed. 



50.24 



50.24 

 51.24 

 50.92 

 51.94 

 42.84 

 54.28 

 49.36 

 61.40 

 60.00 

 61.68 

 62.32 

 61.60 

 50.32 

 50.72 

 50.96 

 51.56 



48.00 



50.00 

 50.00 

 50,00 

 50.00 

 43.00 

 50.00 

 50.00 

 60.00 

 60.00 

 60.00 

 60.00 

 60.00 

 48.00 

 48.00 

 48.00 

 48.00a 



High Grade Sulfate of Pot.\sh. 



Num- 

 ber of 

 Sam- 

 ples. 



Guaran- 

 Found. teed. 



49.12 

 49.08 

 49.68 

 49.20 



48.00 

 48.00 

 48.00 

 48.006 



Chlo- 

 rine. 



1.25 

 1.20 

 2.03 

 1.09 



a Tagged 80% muriate, which would be equivalent to 50.54% potash. 

 b Tagged 90% sulfate, which would be equivalent to 48.64% potash. 



Products Supplying Nitrogen and Pliosphoric Acid. 



Ammo-Phos. 



Dry Ground Fish. 



Manufacturer. 



American Agricultural Chemical Co 



Apothecaries Hall Co. . 

 Berkshire Chemical Co. . 



Consolidated Rendering Co. . 



Eastern States Farmers' Exchange 



Old Deerfield Fertilizer Co., Inc. . 



Olds & Whipple, Inc. . 



Rogers & Hubbard Co. . 



Number 



of 

 Samples. 



trace 

 .07 



trace 

 .25 

 .49 

 .12 



trace 

 .49 

 .15 

 .35 



trace 



trace 

 .74 

 .74 

 .07 

 ,35 



