bout four pounds of seed per acre in the first mode, and about half the
quantity in the second.

There are several varieties of turnips grown for cattle; the most
striking of which are, the White round Norfolk; the Red round ditto; the
Green round ditto; the Tankard; the Yellow. These varieties are nearly
the same in goodness and produce: the green and red are considered as
rather more hardy than the others. The tankard is long-rooted and stands
more out of the ground, and is objected to as being more liable to the
attack of early frosts. The yellow is much esteemed in Scotland, and
supposed to contain more nutriment [Footnote: The usual season for
sowing the above varieties is within a fortnight or three weeks after
Midsummer.]. The Stone and Dutch turnips are grown for culinary
purposes, and are also sometimes sown after the corn is cleared, as
being small and of early growth; these in such cases are called stubble
turnips, and often in fine autumns produce a considerable quantity of
herbage. For a further account of the culture &c. see Dickson's Modern
Husbandry, vol. ii. p. 639.

There is nothing in husbandry requiring more care than the saving seeds
of most of the plants of this tribe, and in particular of the Genus
Brassica. If two sorts of turnips or cabbages are suffered to grow and
bloom together, the pollen of each kind will be sufficiently mixed to
impregnate each alternately, and a hybrid kind will be the produce, and
in ninety-nine times out of a hundred a worse variety than either.
Although this is generally the result of an indiscriminate mixture, yet
by properly adapting two different kinds to grow together, new and
superior varieties are sometimes produced. One gentleman having profited
by this philosophy, has succeeded in producing some fine new varieties
of fruits and vegetables, much to the honour of his own talents and his
country's benefit [Footnote: See Mr Knight On the Apple-tree.]. It is
well known to gardeners that the cabbage tribe are liable to sport thus
in their progeny; and to some accidental occurrence of this nature we
are indebted for the very useful plant called the

64. ROOTA-BAGA. SWEDISH TURNIP.--Which is a hybrid plant par-taking of
the turnip and cabbage, and what has within these few years added so
much to the benefit of the grazier. This root is much more hardy than
any of the turnips; it will stand our winters without suffering injury
from frosts, and is particularly pond