nia | 1.77 | 2.14 | 2.59 | 2.16 | 2.26
Total amount of nitrogen | 1.90 | 2.30 | 2.77 | 2.24 | 2.60
Equal to ammonia | 2.30 | 2.80 | 3.35 | 2.72 | 3.08
Ammonia in free state | .10 | .067 | .127 | .026 | .033
Ammonia in form of salts, | | | | |
easily decomposed | | | | |
by quicklime | .26 | .165 | .234 | .182 | .250
Total amount of organic | | | | |
matter | 83.48 | 70.64 | 69.73 | 53.27 | 56.66
Total amount of mineral | | | | |
substance | 16.52 | 29.36 | 30.27 | 46.73 | 43.34
--------------------------+--------+--------+--------+--------+--------

The above analyses are of value to those who buy fresh and fermented
manure. They can form some idea of what they are getting. If they buy a
ton of fresh manure in November, they get 12-3/4 lbs. of nitrogen, and
30-3/4 lbs. of soluble mineral matter. If they buy a ton of the same
manure that has been kept under cover until February, they get,
nitrogen, 15 lbs.; soluble minerals, 42-1/2 lbs. In April, they get,
nitrogen, 23-3/4 lbs.; soluble minerals, 67-1/2 lbs. In August, they
get, nitrogen, 25-1/2 lbs.; soluble minerals, 61 lbs. In November,
when the manure is over one year old, they get, in a ton, nitrogen,
30-1/4 lbs.; soluble minerals, 88-1/2 lbs.

When manure has not been exposed, it is clear that a purchaser can
afford to pay considerably more for a ton of rotted manure than for a
ton of fresh manure. But waiving this point for the present, let us see
how the matter stands with the farmer who makes and uses the manure.
What does he gain by keeping and fermenting the manure under cover?

The following table shows the weight and composition of the entire heap
of manure, kept under cover, at different times:

Table Showing Composition of Entire Experimental Heap (No. II.)
Fresh Farm-Yard Manure, Under Shed.

--------------------------------+---------+---------+---------+--------
|When put |April 30,|Aug. 23, |Nov. 15,
|up, Nov. |1855. |1855. |1855.
|3, 1854. | | |
--------------------------------+---------+---------+---------+--------