“This egg consists of an outer envelope, the vitelline membrane, containing a fluid more or less dense, the yolk; within this is a second envelope, the so-called germinative vesicle, containing a somewhat different and more transparent fluid, and in the fluid of this second envelope float one or more so-called germinative specks.”
“Until thirty years ago the embryology of the higher vertebrates always started from the position that the first structure of the embryo is a flat, leaf-shaped disk; it was for this reason that the cell-layers that compose this germinal disk (also called germinative area) are called "germinal layers.”
“In the plant, the eye or germinative point opens to a leaf, then to another leaf, with a power of transforming the leaf into radicle, stamen, pistil, petal, bract, sepal, or seed.”
“This practice is due to the lesser germinative potential of the seedstock.”
“In view of its functional significance, it may be called the _motory_ layer, or better, since it forms also the sexual glands, the _motor-germinative_ layer.”
“The distinction which he draws between the sensory and trophic layers on the one hand, and the motor-germinative layer on the other, is entirely a histological one.”
“By means of the germinative affinity, every gemmule (except in cases of anomalies or monstrosities) can be developed only in cells homologous with the mother-cells of the cell from which they originated.”
“The gemmules possess two sorts of affinity, one of which might be called _propagative_, and the other _germinative_ affinity.”
“With regard to the gemmules of Mr. Darwin, we have seen, in Chapter X., with how many innate powers, tendencies, and capabilities they must each be severally endowed, to reproduce their kind, to evolve complex organisms or cells, to exercise germinative affinity, &c.”
“When properly stored in air-tight receptacles, however, as is now done by some seed dealers, it will retain its germinative power for several years with only slight depreciation.”
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