18 



CONTROL SERIES NO. 174 

 PHOSPHORIC ACID COMPOUNDS 



Manufacturer and Brand 



American Agricultural Chemical Co. 



(j round Phosphate Rock 



18% Normal Superphosphate. . . . 

 18% Normal Superphosphate. . . . 

 18% Normal Superphosphate. . . . 



Consolidated Rendering Co. 



Corenco Superphosphate 20%. 



Davison Chemical Co. 



Davro Granulated 20% Superphosphate. 

 Davco Granul.ited 20% Superphosphate 



Eastern States Farmers' Exchange, Inc. 



20% Supei phosphate 



20% Superphosplmte 



Faesy & Beslhoff, Inc. 



F & B Superphosphate 20%. 



Farm Bureau Association 



Farm Bureau 20% Superphosphate. 

 Farm Bureau 20% Superphosphate. 



Hubbard-Hall Chemical Co. 



Old Deerficld Superphosphate 20% . 

 Old Deerfieki .Superphosphate 20% . 

 Hubbard Superphosphate 20% 



International Minerals & Chemical Corp. 



International Superphosphate 20%. . . . 

 Internationa! .Superphosphate 20%. . . . 

 International .Superphosphate 20%. . . . 



Monsanto Chemical Co. 



Mono Calcium Phosphate . 



Sudbury Laboratory 



High Analysis Phosphorus 



Total 

 Phos- 

 phoric 

 Acid 



.■\vailable 

 Phosphoric Acid 



Found 



18.40 

 18.45 

 18.40 



20.75 

 20.85 



20.80 

 20.45 



Guaran- 

 teed 



20 

 20 



20 

 20 



20 



Brands Seriously Deficient 



Armour Fertilizer Works 



.A.rmour's Bin Crop Superphosphate 20%. 

 Armour'.s Bii; Crop Superphosphate 20%. 



Goulard & Olena, Inc. 



G & O Superphosphate 20%, 



19.10 

 21.45 



20.50 



18.10* 

 19.40* 



20 

 20 



c Guaranteed 30% total phosphoric acid. 

 ' -Approximate commercial shortage per ton, 



.80 and SI -20, respectively. 



