40 CONTROL SERIES No. 100 



Phosphoric Acid Compounds 

 Superphosphate, Precipitated Bone, and Basic Slag Phosphate 



Brand Showing Commercial Shortage of More than $1 per Ton 



Acme Guano Co. 



Acme 20% Superphosphate 



Ic 



18.60 



18.10 



20.00 



10.29 



a Guaranteed to contain 34.3% total phosphoric acid; no available phosphoric acid guaranteed. 

 b Guaranteed to contain 22% total phosphoric acid; no available phosphoric acid guaranteed, 

 c Commercial shortage per ton $1.62. 



