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 0 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. a 
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 state 
the deficiency varying from 0.01 to 4.48 per cent and averaging 
