670 



Report on Inspection Work of the 



In connection with the preceding table the following statements 

 give additional details: 



(1) Nitrogen. In 446 samples of complete fertilizers, the amount 

 of nitrogen is found equal to or above the amount guaranteed, the 

 excess varying from 0.01 to 2.29 per ct., and averaging 0.17 per ct. 

 In 166 samples, the nitrogen is below the amount guaranteed, the 

 deficiency varying from 0.01 to 1.09 per ct. and averaging 0.16 per ct. 



(2) Phosphoric acid. In 500 samples the amount of available 

 phosphoric acid is above the amount guaranteed, the excess varying 

 0.01 to 4.04 per ct. and averaging 0.69 per ct. In 112 samples, the 

 available phosphoric acid is below the amount guaranteed, the de- 

 ficiency varying from 0.01 to 1.74 per ct. and averaging 0.51 per ct. 



(3) Potash. In 461 samples the amount of potash is above the 

 amount guaranteed, the surplus varying from 0.02 to 5.47 per ct. 

 and averaging 0.59 per ct. In 151 samples the amount of potash is 

 below the amount guaranteed, the deficiency varying from 0.01 to 

 2.36 per ct. and averaging 0.36 per ct. 



It is a matter of interest to go into some further detail and see the 

 number of samples going above or below the guaranty within certain 

 limits. This information is furnished by the following tabulated 

 arrangement of data. 



Table XX. — Number of Samples Above and Below Guaranteed 



Amounts. 



