| | | | | | | || | | ||
37\3|25\3|31\4|27\1| 24\4|28\6|19\6|37\1|| 26\5|29\7 |28\2 || 7
-----+----+----+----+-----+----+----+----++--------+-----+--------++------

[Note 1: Averages of 4 years, 4 years, and 8 years.]

[Note 2: Averages of 9 years, (1853-'61), last 10 years, and total
19 years.]

[Note 3: Averages of 7 years (1855-'61), last 10 years, and total
17 years.]

[Note 4: Averages of 9 years (1853-'61), last 10 years, and total
19 years.]

The produce of barley the first season (1852), was, per acre:

On the unmanured plot 27-1/4 bushels
With superphosphate of lime 28-5/8 "
" potash, soda, and magnesia 26-1/4 "
" " " " and superphosphate 32-3/4 "
" 14 tons barn-yard manure 33 "
" 200 lbs. ammonia-salts alone 36-7/8 "
" " " and superphosphate 38-5/8 "
" " " and potash, soda, and magnesia 36 "
" " " and superphosphate, potash,
soda, and magnesia 40-3/4 "
" 400 lbs. ammonia-salts alone 44-1/2 "

The 200 lbs. of ammonia-salts contain 50 lbs. of ammonia = 41 lbs.
nitrogen.

It will be seen that this 50 lbs. of ammonia alone, on plot 1_a_, gives
an increase of nearly 10 bushels per acre, or to be more accurate, it
gives an increase over the unmanured plot of 503 lbs. of grain, and 329
lbs. of straw, while double the quantity of ammonia on plot 1_a.a._,
gives an increase of 17-1/4 bushels per acre--or an increase of 901 lbs.
of grain, and 1,144 lbs. of straw.

"Put that fact in separate lines, side by side," said the Deacon, "so
that we can see it."
Total
Grain Straw Produce.
50 lbs. of ammonia gives an increase of 503 lbs. 704 lbs. 1207 lbs.
100 " " " " " " " 901 " 1144 " 2045 "
The first 50 lbs. of ammonia gives an
increase of 503 " 704 " 1207 "
The second 50 lbs. of ammonia gives an
increase of 398 " 540 " 738 "

"That shows," said the Deacon, "that