As for the flowering period of the hybrid, the experiment is not over. However, it has been declared that the time is almost exactly between the flowering period of the seed and the pollen parent, and that the structure of the hybrid in respect of this trait is approximately in accordance with the rules determined by other traits. The type chosen for this type of experiment must have a difference of at least 20 days from the middle of flowering of one species to the middle of the flowering of another; in addition, the seeds must be placed at the same depth in the soil at the time of sowing, so that they can germinate at the same time. At the same time, during the whole flowering period, it is necessary to take into account the more important temperature variation, and the resulting flowering part earlier or later. Obviously, this experiment raises many difficulties to be overcome and requires a lot of attention.<br>If we try to sort out the results obtained in a simple form, we find that the distinguishing characters easily recognized in the tested plants behave exactly the same in their hybrid relationships. Half of the progenies of each pair of hybrids were hybrids, while the other half were stable, and the proportions of traits between seed and pollen parents were exactly equal. If several distinguishing characters are combined in a hybrid by cross pollination, the progenies produced form the items of a combination series, in which each pair of combination series of distinguishing characters is combined.<br>The consistency of the behaviour of all the characters tested allows and fully proves the acceptance of the principle that the behaviour is not so obvious in plants and therefore cannot be included in the various tested traits, and there are similar relationships. An experiment with pedicels of different lengths has, on the whole, produced quite satisfactory results, although the distinction of types and the arrangement of clusters cannot be made with the certainty which is indispensable in accurate experiments.<br>
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