I knew that this expectancy was no more passive than in the male flower, whose stamens had spontaneously curved so that the insect might more easily receive their offering; similarly the female flower that stood here, if the insect came, would coquettishly arch her styles; and, to be more effectively penetrated by him, would imperceptibly advance, like a hypocritical but ardent damsel, to meet him halfway. The laws of the vegetable kingdom are themselves governed by other laws, increasingly exalted. If the visit of an insect, that is to say, the transportation of the seed of one flower is generally necessary for the fertilisation of another, that is because autofecundation, the fertilisation of a flower by itself, would lead, like a succession of intermarriages in the same family, to degeneracy and sterility, whereas the crossing effected by the insects gives to the subsequent generations of the same species a vigour unknown to their forebears.