and three of
these hybrids produced many capsules, of which a half, or quarter, or
lesser segment was smooth and of small size like the capsule of the
pure _D. laevis_, the remaining part being spinose and of larger size
like the capsule of the pure _D. stramonium_: from one of these
composite capsules, plants were raised which perfectly resembled both
parent-forms.

Turning now to varieties. A _seedling_ apple, conjectured to be of
crossed parentage, has been described in France,[917] which bears
fruit, with one half larger than the other, of a red colour, acid
taste, and peculiar odour; the other side being greenish-yellow and
very sweet: it is said scarcely ever to include perfectly developed
seed. I suppose that this is not the same tree with that which
Gaudichaud[918] exhibited before the French Institute, bearing on the
same branch two distinct kinds of apples, one a _reinette rouge_, and
the other like a _reinette canada jaunatre_: this double-bearing
variety can be propagated by grafts, and continues to produce both
kinds; its origin is unknown. The Rev. J. D. La Touche sent me a
coloured drawing of an apple which he brought from Canada, of which
half, surrounding and including the whole of the calyx and the
insertion of the {393} footstalk, is green, the other half being brown
and of the nature of the _pomme gris_ apple, with the line of
separation between the two halves exactly defined. The tree was a
grafted one, and Mr. La Touche thinks that the branch which bore this
curious apple sprung from the point of junction of the graft and stock:
had this fact been ascertained, the case would probably have come into
the small class of graft-hybrids presently to be given. But the branch
may have sprung from the stock, which no doubt was a seedling.

Prof. H. Lecoq, who has made a great number of crosses between the
differently coloured varieties of _Mirabilis jalapa_,[919] finds that
in the seedlings the colours rarely combine, but form distinct stripes;
or half the flower is of one colour and half of a different colour.
Some varieties regularly bear flowers striped with yellow, white, and
red; but plants of such varieties occasionally produce on the same root
branches with uniformly coloured flowers of all three tints, and other
branches with half-and-half coloured flowers and o