20 



CONTROL SERIES NO. 158 

 PHOSPHORIC ACID COMPOUNDS 



Manufacturer and Brand 



American Agricultural Chemical Co. 



AA Quality Phospliate Rock 



18% Normal Superphosphate 



Apothecaries Hall Co. 



Superphosphate 20% 



Armour Fertilizer Works 



Big Crop Superphosphate 20% 



Consolidated Rendering Co. 



Corenco Superphosphate 20% 



Davison Chemical Corp. 



Davco Granulated 20%, Superphosphate 



Eastern States Farmers' Exchange, Inc. 



Superphosphate 20%, 



Farm Bureau Association 



Superphosphate 20% 



Fox Point Chemical Co. 



Old Fox Superphosphate 20% 



Goulard & Olena, Inc. 



G & O Superphosphate 20% 



International Minerals & Chemical Corp. 



Superphosphate 20% 



Old Deerfield Fertilizer Co., Inc. 



Superphosphate 20% 



Rogers & Hubbard Co. 



Hubbard Superphosphate 20% 



Total 

 Phos- 

 phoric 

 Acid 



31 .50a 

 fl9.16 

 19.18 

 18.18 

 18.556 



21 .35 

 20.75 



[21.10 

 120.10 

 19.75 



22.0 



21.60 



20.20 



20.60 



20.90 



20.65 



20.16 



20.50 



Available 

 Phosphoric Acid 



Found 



18.00 

 18.00 

 18.00 

 18.39 



20.29 

 20.13 



20.90 

 20. OC 

 19.65 



20.56 

 20.26 

 20.20 

 20.42 

 20.20 

 20.43 

 20.00 

 20.30 



Guaran- 

 teed 



18.0 

 18.0 

 18.0 

 18.0 



20.0 

 20.0 



20.0 

 20.0 

 20,0 



20 

 20.0 

 20.0 

 20.0 

 20.0 

 20.0 

 20.0 

 20.0 



a Guaranteed 30% total phosphoric acid. 

 b Old stock. 



POTASH COMPOUNDS 



Muriate of Potash 



Manufacturer 



American Agricultural Chemical Co 



Consolidated Rendering Co 



Eastern States Farmers' Exchange, Inc. . 



Farm Bureau Association 



International Minerals & Chemical Corp, 



Old Deerfield Fertilizer Co., Inc 



Rogers & Hubbard Co 



Water Soluble Potash 



