18 



CONTROL SERIES NO. 162 

 PHOSPHORIC ACID COMPOUNDS 



Manufacturer and Brand 



American Afiricultural Chemical Co. 



A A Quality Phosphate Rock. . . 



18% Normal Superphosphate. 



Consolidated Rendering: Co. 



Corenco Superphosphate 20% , 



Davison Chemical Corp. 



Davco Granulated Superphosphate 20"^ J, 



Eastern States Farmers' Exchange, Inc. 



Superphosphate 20% 



Farm Bureau Association 



Superphosphate 20' ; 



International Minerals & Chemical Corp. 



Superphosphate 20% 



Old Deerfield Fertilizer Co., Inc. 



Superphosphato 20% 



Rogers & Hubbard Co. 



Hubbard Superphosphate 20% . 



Total 

 Phos- 

 phoric 

 Add 



!^0.80a 

 3 1. 00a 



Available 

 Phosphoric Acid 



Brand Seriously Deticient 



.\rmour Fertilizer Works 



Big Crop Superphosphate 20% (6) 



a Guaranteed 30% total phosphoric acid. 



b Approximate commemial shortage per ton. $1.83. 



POTASH COMPOUNDS 



Water Soluble Potash 



Manufacturer and Brand 



Eastern States Farmers' Exchange. Inc. 



Muriate of Potash 



Fox Point Chemical Co. 



Old Fox Muriate nf Potash 



International Minerals & Chemical Corp. 



Muriate of Potash 



Sul-Po-Mac; (a) 



Old Deerfield Fertilizer Co.. Inc. 



Muriate of Potash 



Rogers <S Hubbard Co. 



Hubbard Muriate of Potash '. 



Brand Seriously Deticient 



Consolidated Rendering Co. 



Muriate of Potash (b) 



(7 Magnesium oxide found, 19.60%; guaranteed 18%. 

 b .\pproximate commercial shortage per ton. $1.28. 



