ushels, and ammonia and
superphosphate together, 40 bushels.

The superphosphate and "ashes" give a better account of themselves this
year; but it is remarkable that the ammonia alone, gives almost as good
a crop as the ammonia and superphosphate, and a _better_ crop than the
ammonia and "ashes," or the ammonia, superphosphate, and ashes,
together.

The 14 tons farm-yard manure gives over 36 bushels per acre. This plot
has now had 28 tons of manure per acre, yet the 50 lbs. of ammonia
alone, still gives a better yield than this heavy dressing of manure.

The _third_ season (1854), was quite favorable for the ripening of wheat
and barley. The seed on the experimental barley-field, was sown Feb. 24,
and the harvest was late; so that the crop had an unusually long season
for growth. It was one of the years when even poor land, if clean, gives
a good crop. The unmanured plot, it will be seen, yielded over 35
bushels per acre of dressed grain, weighing over 53-1/2 lbs. per bushel.
The total weight of grain, was 1,963 lbs. This is over 40 bushels per
acre, of 48 lbs. per bushel, which is the standard with us.

The 14 tons of farm-yard manure produce nearly 56-1/2 bushels per acre.

50 lbs. of ammonia, on plot 1_a._ 47-3/4 bushels per acre.
100 " " " " " 1_a.a._ 56-5/8 " "

You will see, that though the plot which has received 42 tons of manure
per acre, produced a splendid crop; the plot having nothing except 100
lbs. of ammonia per acre, produced a crop equally good. "How much
increase do you get from 50 lbs. of ammonia," asked the Deacon, "and how
much from 100 lbs.?"
Equal Amer.
Grain. Straw. Bushels.
50 lbs. of ammonia,
gives an increase of 800 lbs. 952 lbs. 16-2/3 bush.
100 " " "
" " " " 1,350 " 2,100 " 28 "

If you buy nitrate of soda at 3-3/4 cents a lb., the ammonia will cost
20 cents a lb. In the above experiment, 50 lbs. of ammonia, costing $10,
gives an increase of 16-2/3 bushels of barley, and nearly half a ton of
straw. If the straw is worth $4.00 per ton, the barley will cost 48
cents a bushel.

Double the quantity of manure, costing $20, gives an increase of 28
bushels of barley, and over one ton of straw. In this case the extra
barley costs 57 cents a bushel.

On plot 2_a._, 50 lbs. of ammonia and 3-