New York AGRICULTURAL EXPERIMENT STATION. Dey 
from 4.77 to 13.45 per cent and averaging 9.27 per cent. The 
average amount of available phosphoric acid found by the Station 
analysis exceeded the average guaranteed amount by 0.96 per cent, 
the guaranteed average being 8.31 per cent and the average found 
being 9.27 per cent. 
In 93 brands of complete fertilizers, the amount of available 
phosphoric acid found was above the amount guaranteed, the ex- 
cess varying from 0.09 to.4.62 per cent and averaging 1.24 per 
cent. 
In 18 brands, the available phosphoric acid was below the guar- 
anteed amount, the deficiency vatying from 0.03 to 1.61 per cent 
and averaging 0.48 per cent. In 11 cases the deficiency was below 
0.5 per cent. 
‘The amount of water-soluble phosphoric acid varied from 0.62 
per cent to 9.78 per cent, and averaged 5.72 per cent. 
(4) Potash. The complete fertilizers contained potash varying 
in amount from 0.36 to 10.48 per cent and averaging 4.36 per 
cent. The average amount of potash found by the Station analy- 
sis exceeded the average guaranteed amount by 0.26 per cent, 
the guaranteed average being 4.10 per cent and the average found 
being 4.36 per cent. 
In 79 brands of complete fertilizers, the amount of potash 
found was above the guaranteed amount, the excess varying from 
0.01 to 2.87 per cent and averaging 0.57 per cent. 
In 31 brands, the potash was below the guaranteed amount, the 
deficiency varying from 0.05 to 2.29 per cent and averaging 0.54 
per cent. In 18 of these cases, the deficiency was less than 0.5 
per cent. 
In 11 cases among the 111 brands of complete fertilizers the 
potash was contained in the form of sulphate free from an excess | 
of chlorides. | 
(5) The retail selling prices of the complete fertilizers varied 
from $14.25 to $35 a ton and averaged $23.16. The retail cost of 
the separate ingredients unmixed averaged $17.34, or $5.82 less 
than the selling price. 
