It is frequently very expedient to apply these manures to the
same soil and crop with Peruvian Guano, the best quantities
are from seventy-five to one hundred pounds of Peruvian with
from one hundred and fifty to two hundred pounds of phos-
phatic guano containing about fifty per cent, of phosphate of
lime. The phosphatic manure should be applied broad-cast
and the Peruvian Guano be applied with a drill in the case
of wheat, or mixed with wood earth, and in the hill with corn,
tobacco, cabbage, &c.

The equal mixture of large quantities of substances is
very difficult, and indeed Useless when done in the case of
the guanos before being applied to the soil. If, however,
Farmers and Planters prefer such an admixture, they should
in every instance do it for themselves, and not buy the mix-
ture from others. The guanos can easily be reduced to very
fine powder by means of the corn and cob crushing mills
now sold, and by the same means as thoroughly mixed as can
be done by other means used by manufacturers and venders.
After the grinding of the guano, the mill can then be easily
cleansed for use by running a few corn shucks and corn cobs
through it I have frequently seen guano prepared in this
way in first rate style, and have heard the most favorable
reports as to its efficiency from many sound practical farmers.

Phosphatic guanos should be applied to crops which have
a broad leafy development, as this class of plants can more
readily obtain nutriment from the air of the kind furnished
by Peruvian guano, than those which have narrow leaves.

The above rules apply with equal force to the Superphos-
phate of Lime, of which large quantities are being used, es-
pecially for corn and tobacco.

The indications for the use of this class of manures, is the
absence of a proper quantity of Phosphate of Lime in the
soil, and in a form so that the growing plant cannot assimi-
late it.

There is no manure, which in its use, shows more clearly
and distinctly, the intimate connection which should exist
between analytical chemistry and practical agriculture than
this, and how either, without the aid of the other, is liable to
error. In the analysis of a soil by the most approved means,
sometimes there is shown a quantity of Phosphate of Lime
sufficient for crops for a series of years, and yet on this soil,
Phosphate of Lime may frequently greatly increase the quan-
tity of the crop. This seeming contradiction can be most
truly explained by the fact that, the Phosphate of Lime
is so associated with other minerals of an insoluble na-
ture, as not to be available in proper quantities for plants,

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