94 Report of the Chemist of the 



In 168 brands the nitrogen was below the guaranteed amount, 

 the deficiency varying from 0.01 to 1.64 per cent and averaging 

 0.21 per cent. In 156 cases, the deficiency was less than 0.5 per 

 cent. 



The amount of water soluble nitrogen varied from to 5.03 per 

 cent and averaged 0.94 per cent. 



(3) Available Phosphoric Acid. The 578 brands of complete 

 fertilizers contained available phosphoric acid varying in amount 

 from 3.69 to 14.28, per cent and averaging 8.65 per cent. The 

 average amount of available phosphoric acid found by the Station 

 analysis exceeded the average guaranteed amount by 1 per cent, 

 the guaranteed average being 7.65 per cent and the average found 

 being 8.65 per cent. 



In 468 brands of complete fertilizers, the amount of available 

 phosphoric acid found was above the amount guaranteed, the ex- 

 cess varying from 0.03 to 6.52 per cent and averaging 1.23 per 

 cent. 



In 89 brands, the available phosphoric acid was below the guar- 

 anteed amount, the deficiency varying from 0.01 to 2.13 per cent 

 and averaging 0.43 per cent. In 63 cases the deficiency was below 

 0.5 per cent. 



The amount of water soluble phosphoric acid varied from 0.10 

 to 11.11 per cent and averaged 5.08 per cent. 



(4) Potash. The complete fertilizers contained potash varying 

 in amount from 0.22 to 15.22 per cent, and averaging 4.91 per 

 cent. The average amount of potash found by the Station analy- 

 sis exceeded the average guaranteed amount by 0.24 per cent, the 

 guaranteed average being 4.67 per cent and the average found 

 being 4.91 per cent. 



In 426 brands of complete fertilizers, the amount of potash 

 found was above the guaranteed amount, the excess varying from 

 0.01 to 3.15 per cent and averaging 0.55 per cent. 



In 140 brands, the potash was below the guaranteed amount, 

 the deficiency varying from 0.01 to 4.48 per cent and averaging 



