162 Report CF THE D:iR&CTOR OF THE 
The Mixing of Fertilizers. 
The following represent the average prices of the best fertil- 
izing materials, per ton of 2,00 pounds, in the city of New York 
duriog the fall of 1894: 
Nitrate of soda, 96 per cent. pure, containing 15.81 per cent. 
of nitrogen, $46 ; equal to 14.55 cents per pound for nitrogen. 
Sulphate ‘BE ammonia, 95.25 per cent. pure, containing 20.2 
per cent. of nitrogen, $74; equal to 18.07 cents per pound for 
nitrogen. 
Muriate of potash, 81.5 per cent. pure, containing the equiv- 
alent of 51.46 per cent. of potash, $40; equal to 3.89 cents per 
pound for potash. 
Sulphate of potash, 92.5 per cent. pure, containing 50 per cent. 
potash, $16.25, equal to 4.625 cents per pound for potash. 
Acid phosphate, containing 15 per cent. soluble phosphoric acid, 
$12.75, equal to 4 25 cents per pound for soluble phosphoric acid. 
The above constitute the very highest grades, and the most 
expensive fertilizing materials in our markets. 
Lower grades of muriate and sulphate of potash and of acid 
phosphates can be obtained at prices which would considerably 
reduce the cost per pound of potash and phosphoric acid; also in 
place of the expensive nitrate and ammonia salts, fish scrap, 
tankage, dried blood and other forms of nitrogenous compounds 
could be used, thereby very appreciably reducing the cost. 
Let us suppose that we desire from the above chemicals to mix 
several fertilizers representing the average analyses given of the 
235 fertilizers analyzed, also one having the average composition 
of the 41 potato manures, also another having the composition of 
the average of the eight tobacco manures, and finally one with | 
the average composition of the 12 cabbage manures. 
These average analyses are as follows: 
- Phosphoric 
Nitrogen, P..tash 
per oe on per cent. 
1 | Average of 235 fertilizers......... 3.02 8.33 5.32 
2 | Average of 41 potato fertilizers ...| 3.22 5.37 6.455 
8 | Average of 8 tobacco fertilizers ... 2.89 8.25 4.64 
+ 
Average of 12 cabbage fertilizers..| 4.61 6.69 7.03 
