18 



CONTROL SERIES NO. 174 

 PHOSPHORIC ACID COMPOUNDS 



Manufactuicr and Brand 



Total 

 Phos- 

 phoric 

 Acid 



Available 

 Phosphoric Acid 



Found 



Guaran- 

 teed 



American Agricultural Chemical Co. 



Ground PhiT^iihate Rock 



18% Normal Superphosphate 



18% Normal Superphosphate 



18% Normal Superphosphate 



Consolidntcd Rendering Co. 



Corenco Superphosphate 20%. 



Davison Chemical Co. 



Davro Granulated 20% Superphosphate. 

 Davto Granulated 20% Superphosphate 



Eastern Stales Farmers' Exchange, Inc. 



20% Supei phosphate 



20% Superphosphate 



Faesy & Beslhoff. Inc. 



F & B Superphosphate 20%, 



Farm Bureau Association 



Farm Bureau 20% Superphosphate. 

 Farm Bureau 20% Superphosphate. 



Hubbard-Hall Chemical Co. 



Old Deerfield Superphosphate 20% . 

 Old Deerliekl Superpho.sphate 20% . 

 Hubbard Superphosphate 20% 



International Minerals & Chemical Corp. 



International Superphosphate 20%. . . , 

 International Superpho.sphate 20% . . . . 

 International Superphosphate 20%. . . . 



Monsanto Chemical Co. 



Mono Calcium Phosphate. 



Sudbury Laboratory 



High Analysis Phosphorus 



Brands Seriously Deficient 



18.40 

 18.45 

 18.40 



20.75 

 20.85 



20.80 

 20.45 



20.80 

 20.25 



21.35 

 20 . 85 

 20.30 



20.40 

 20.25 

 20.95 



56.00 



47. ()4 



20 



20 

 20 



20 

 20 



20 

 20 



20 

 20 

 20 



20 

 20 

 20 



40 



Armour Fertilizer Works 



Armour's Big Crop Superphosphate 20%. 

 Armour's Bis; Crop Superphosphate 20%. 



Goulard & Olena, Inc. 



G & O Superphosphate 20% 



18.10* 

 19.40* 



20 

 20 



20 



a Guaranteed 30% total phosphoric acid. 



'■ Approximate commercial shortage per ton, $3.80 and 31-20, respectively. 



