food stored in the first two that the plumule can develop before a root is
formed, while in the others there is only nourishment sufficient to enable
the plantlet to form its roots. These must make the second leaves by their
own labor.


3. _Comparison with other Dicotyledons_.--The pupils should now have other
seeds to compare with these four. Let them arrange Flax, Four o-clock,
Horsechestnut, Almond, Nasturtium, Maple-seeds, etc., under two heads.

_Seeds with the Food stored _Seeds with the Food stored
outside the plantlet in the embryo itself
(Albuminous)_. (Exalbuminous)_.

Flax. Four-o'clock. Acorn. Horsechestnut. Almond.
Morning-Glory. Maple. Sunflower. Squash.
Bean. Pea. Nasturtium.

They may also be divided into those with and without the plumule.

_Without Plumule_. _With Plumule_.

Flax. Maple. Sunflower. Acorn. Horsechestnut.
Four-o'clock. Almond. Bean. Pea.
Morning-Glory. Squash. Nasturtium.

Those with plumules will be seen to have the most abundant nourishment. In
many cases this is made use of by man.

These last can be again divided into those in which the cotyledons come up