e different guano deposits, in order to prevent not
only the illegal extraction of guano by foreign trading vessels, but
also to prevent the natives of Peru from violating the Government orders
against visiting those localities, and destroying or disturbing the
birds.

Notwithstanding this cuts off the free trade in the article, it goes to
show what we have always endeavored to impress upon the minds of
American farmers, that the supply is inexhaustible--at least in this age
and generation--and as every one grows wiser and wiser, it is probable
the next will have no occasion to use such an old fashioned article as
bird dung for manure. During the present, however, our advice is to
every person occupying land which needs something to improve its
fertility, to use guano--genuine Peruvian guano--purchased of reliable
merchants--and the fewer the better between the importer and consumer.

_The Quantity inexhaustible._--By those surveys, the quantity was
ascertained to be upwards of TWENTY MILLIONS OF TONS. As this must
appear so enormous as to be almost incredible, we present the annexed
cut, supposed to represent a vertical section of one of the Chincha
islands and the depth of the deposit according to the government
surveys. The paralel lines at the bottom represent the level of the
water--the crooked line above, the surface of the rock; its position
having been ascertained by boring and observations of the surveyors. The
rounded line is the surface of the island as it now appears; all between
that and the rock being guano. The almost perpendicular line at the left
hand, 100 feet high, is the rock at which ships lay to take in cargo.
The space under the dotted line show a comparison of the quantity taken
away, as it relates to the whole upon the island. The well hole
represented in that section was dug some fifty feet deep to prove the
guano was of equal quality at the bottom.

The Chincha Islands are three in number; not remote from each other or
differing very materially in size or general feature. The Geological
formation presents the appearance of masses of rock jutting out above
the surface of the ocean--and occasionally rising nearly perpendicularly
to a height of from 50 to 100 feet. At a distance, the islands present
to the eye a somewhat conical form; owing probably to the greater
deposits of guano in the centre; and all appear equally rich in quantity
and quality.

The "North Island" is estimated to be about