ll remain, it is not advisable to apply much manure.

"Amongst the fertilizers that are employed, may be enumerated, in
addition to barnyard and stable manure, leaves, leaf-mould,
peat-charcoal, and other carbonaceous substances, lime, gypsum, or
plaster, and bone-dust.

"Wood-ashes are useful in supplying potash and other inorganic
substances required by the plant; and they may be advantageously applied
where the soil contains a large amount of decayed vegetable matter. The
same remark will also apply to lime, which is useful in destroying slugs
and other vermin, which attack the tubers. Plaster, bone-dust, and
superphosphate of lime, are best for humid soils. They induce earliness;
and where this is an object, as it must be so long as the disease
continues, they may be applied with considerable advantage."--_Thomp._

_Propagation._--"This is almost universally from tubers; the seed being
seldom sown, except for the production of new varieties. With many it is
a doubtful question, whether the tubers cut, or planted whole, yield the
greater return. From experiments made in the garden of the London
Horticultural Society at Chiswick, it was found, on the mean of two
plantations,--one made early in the season, and the other about one
month later,--that the produce from cut sets exceeded that from whole
tubers by nearly one ton per acre. In the latter planting, the produce
from whole tubers was somewhat greater than that from single eyes: but,
in the early plantation, the cut sets gave nearly two tons per acre more
produce than the whole tubers; the weight of potatoes planted being
deducted in every case.

"Another important consideration is, whether small tubers or large ones
should be employed for making sets; for if, by using the former, an
equally good crop could be obtained, a considerable saving in the
expense of sets would be effected. Large tubers, however, are
preferable, for the following reasons: In all plants, large buds tend
to produce large shoots; and small or weak buds, the reverse. Now, the
eyes of potatoes are true buds, and in small tubers they are
comparatively weak: they consequently produce weak shoots, and the crop
from such is inferior to that obtained from plants originating from
larger tubers, furnished with stronger eyes; and this conclusion has
been justified by the results of actual experiments.

"The part of the Potato employed for planting is not a matter of
indifference. It was found, by