References in classic literature ?
cygnoides), species which are so different that they are generally ranked in distinct genera, have often bred in this country with either pure parent, and in one single instance they have bred inter se.
So in hybrids themselves, there are some which never have produced, and probably never would produce, even with the pollen of either pure parent, a single fertile seed: but in some of these cases a first trace of fertility may be detected, by the pollen of one of the pure parent-species causing the flower of the hybrid to wither earlier than it otherwise would have done; and the early withering of the flower is well known to be a sign of incipient fertilisation.
There are many cases, in which two pure species can be united with unusual facility, and produce numerous hybrid-offspring, yet these hybrids are remarkably sterile.
The fertility, both of first crosses and of hybrids, is more easily affected by unfavourable conditions, than is the fertility of pure species.
There are certain hybrids which instead of having, as is usual, an intermediate character between their two parents, always closely resemble one of them; and such hybrids, though externally so like one of their pure parent-species, are with rare exceptions extremely sterile.
Your task has been too hard for you," said the Queen kindly, as she placed the drooping flower in the urn Eglantine had given, "you will see how this dew from a sweet, pure heart will give new life and loveliness even to this poor faded one.
Some learned how by pleasant dreams to cheer and comfort mortal hearts, by whispered words bf love to save from evil deeds those who had gone astray, to fill young hearts with gentle thoughts and pure affections, that no sin might mar the beauty of the human flower; while others, like mortal children, learned the Fairy alphabet.
Do you see," said the Elves, "through this simple flower will we keep the child pure and stainless amid the sin and sorrow around her.
The loving Elves brought her sweet dreams by night, and happy thoughts by day, and as she grew in childlike beauty, pure and patient amid poverty and sorrow, the sinful were rebuked, sorrowing hearts grew light, and the weak and selfish forgot their idle fears, when they saw her trustingly live on with none to aid or comfort her.
The many-colored shadows of the fairest flowers played on the pure white walls, and fountains sparkled in the sunlight, making music as the cool waves rose and fell, while to and fro, with waving wings and joyous voices, went the smiling Elves, bearing fruit and honey, or fragrant garlands for each other's hair.
Nothing so fair, so pure, and at the same time so large, as a lake, perchance, lies on the surface of the earth.
Thus then we seem to have discovered that the many ideas which the multitude entertain about the beautiful and about all other things are tossing about in some region which is halfway between pure being and pure not-being?

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