Dec, 1937] fertilizer inspection, 1937 3 



inspected and analyzed one or more times each year. 

 When failure to meet the guarantee is proven by chemical 

 analysis, the prosecution or seizure provisions of the law 

 may be invoked. All of the samples reported in this 

 bulletin were officially taken by an inspector appointed 

 by the Commissioner of Agriculture. The chemical 

 analyses were made by the official methods of the Asso- 

 ciation of Official Agricultural Chemists. 



In Table I are tabulated the grades of complete ferti- 

 lizers analyzed in this year's inspection, the number of 

 brands found by the inspector in each grade, the average 

 per cent of nitrogen, of available phosphoric acid, and 

 of water soluble potash of the brands in each grade and 

 the average retail price per ton. 



