and is put to the same uses.

Other characters: The fruit is a nut, larger and covered with a shell
thicker than that of the shagbark. The husk is also thicker and
separates into four segments nearly to the base. The kernel is small
and sweet.

Other common names: _Bigbud hickory_; _whiteheart hickory_.

Comparisons: The _pignut hickory_ (_Hicoria glabra_), sometimes called
broom hickory or brown hickory, often has a shaggy bark, but differs
from both the shagbark and the mockernut hickory in possessing buds
very much smaller, twigs more slender and leaflets fewer. The nut
has a thinner husk which does not separate into four or five
segments. The tree prefers drier ground than the other hickories.

[Illustration: FIG. 69.--Bud of the Mockernut Hickory.]

The _bitternut_ (_Hicoria minima_) can be told from the mockernut
and other species of hickory by its bud, which has no scales at all.
The color of its bud is a characteristic orange yellow. The bark is
of a lighter shade than the bark of the mockernut hickory and the
leaflets are more numerous than in any of the hickories, varying
from 7 to 11. Its nuts are bitter.


BLACK WALNUT (_Juglans nigra_)

Distinguishing characters: By cutting a twig lengthwise, it will be seen
that its *pith* is divided into little _chambers_ as shown in Fig.