and the manured portion suffered more from
this cause than either of the others; the land being considerably more
elevated, and a south exposure."

In our opinion Mr. S. is in error in regard to the manured land
suffering most from drouth. In our experience we have always found the
best effects from Guano, in wet seasons, or upon irrigated land. He says
also, "This is one of the most active of all manures; and although he
thinks the effect evanescent, it might aid materially in renovating worn
out lands." Since that time a great many other Maryland farmers have,
undoubtedly come to the same conclusion, for notwithstanding the price,
which he thinks too high to justify its extensive use, has not been
materially reduced, there is more guano sold in Baltimore than any, or
perhaps all the ports in the United States; and the benefits derived
from its use upon the worn out lands of Maryland, have been of the most
satisfactory character.

In speaking of the after crop of grass upon the land above mentioned, he
says:

"The field has since been mowed three times; the first crop of grass was
evidently in favor of the boned part; the second, and third, were fully
two to one over the guano, and also yielding much heavier crops of
clover seed. On a part of one land, 18 bushels to the acre of the finest
of the bone were used; on this, the wheat was as heavy as on the
guanoed, and the grass generally lodges before harvest, as it also does
on much of the adjoining land with 12 bushels of bone."

This is all right; it should never be mixed with lime, and it should be
plowed in. In his experiments, the lime in the soil had the effect to
disengage the ammonia, and not being sufficiently buried or mixed up
with the earth to prevent its escape during a very dry season, much of
its value went afloat in the atmosphere. If he had given a bushel of
plaster as a top dressing, there is no doubt the effect upon the grass
crop would have been entirely different. The action of guano is very
variable upon different soils, as well as upon the same kinds of soil in
different seasons, or from the different manner of applying it; but
there is one thing in its favor, it seldom fails to pay for itself, as
Mr. Newton remarks, in the first crop; and if properly applied, that is,
plowed in with wheat, upon poor, sandy, "worn out land," and followed by
clover, and that dressed with plaster, it will pay far better in the
succeeding years than the first. Th