30 



CONTROL SERIES No. 45 

 Milorganite and Organic Conditioner. 



1 Two analyses. 



Note: The nitrogen activity on all of these samples was satisfactory. 



Phosphoric Acid Compounds. 



The following table gives the analyses of those fertilizer simples valued chiefly 

 for their phosphoric acid : 



Superphosphate (Acid Phosphate), Precipitated Bone 

 and Basic Slag Phosphate. 



1 Three analyses. 



2 Two analyses. 



s Soluble in 2% citric acid solution (Wagner method). 

 * Mixture of acid phosphate and ground tobacco stems. 



Potash Compounds. 



The tables under this heading give the composition of those salts valued 

 chiefly for their potash. 



