seen
many instances in which it has had a wonderful effect on wheat."

"Yes," said I, "and our experienced friend, John Johnston, is very
decidedly of the opinion that its use is highly profitable. He sows a
barrel of salt per acre broadcast on the land at the time he sows his
wheat, and I have myself seen it produce a decided improvement in the
crop."

We have now given the results of the first _eight_ years of the
experiments. From this time forward, the _same manures_ were used year
after year on the same plot.

The results are given in the accompanying tables for the following
twelve years--harvests for 1852-53-54-55-56-57-58-59-60-61-62 and 1863.
Such another set of experiments are not to be found in the world, and
they deserve and will receive the careful study of every intelligent
American farmer.

"I am with you there," said the Deacon. "You seem to think that I do not
appreciate the labors of scientific men. I do. Such experiments as these
we are examining command the respect of every intelligent farmer. I may
not fully understand them, but I can see clearly enough that they are of
great value."

Experiments at Rothamsted on the Growth of Wheat, Year After Year,
on the Same Land.

Table IX.--Manures per Acre per Annum (with the exceptions explained
in the Notes on p. 203), for 12 Years in succession--namely, for the
9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, and
20th Seasons: that is, for the crops of Harvests 1852- 53- 54- 55- 56-
57- 58- 59- 60- 61- 62 and 1863.[A]

Manures
FM Farm-yard Manure.
CS Common Salt.
SP Sulphate of Potass.[1]
SS Sulphate of Soda.[1]
SMg Sulphate of Magnesia.[1]
B-A Bone-ash.
SAc Sulphuric Acid. (Sp. gr. 1.7)
MAc Muriatic Acid.
SAm Sulphate of Ammonia.
MAm Muriate of Ammonia.
NS Nitrate of Soda.
RC Rape-cake.

--------+-------------------------------------------------------------
| Manures per Acre per Annum for 12 Years, 1851-2 to
| 1862-3 inclusive, except in the cases explained in the
| Notes on p. 203.
P +-----+-----+----+----+----+----+---------------+----+----+---
l | | | | | | | Superphosphate| | |
o | | | | | | | of Lime. | | |
t | | | | | | +----+----+-----+ | |
s | FM | CS | SP | SS |SMg |B-A |SAc |MAc | SAm |MAm | NS | RC
------