INSPECTION OF COMMERCIAL FERTILIZERS 



37 



Nitrogen Compounds. 



The chemicals and unmixed materials under this heading are valued chiefly 

 for the nitrogen which they contain. Some of them, however, contain more than 

 this one element: the nitrate of potash containing potash; the calcium nitrate 

 and cyanamid containing lime; and the organic vegetable substances containing 

 small quantities of phosphoric acid and potash, as will be noticed by a reference 

 to the summary table on the previous page. 



Brands showing a commercial shortage of one dollar or more per ton follow 

 the appropriate table, but are listed by themselves, serious deficiencies therein 

 being emphasized by boldface type. 



Nitrate of Soda and Sulfate of Ammonia. 



Champion brand. 



b Standard brand. 



Calcium Nitrate, Cal-Nitro, Urea and Calcium Cyanamid. 



Urea in cartridge form for hose attachment. 



