1300. The light is the Active, the heat the Passive; light the Moving, heat the Moveable; light the Vitalizing, heat the Inactive, or that which becomes vitalized; light the spirit, heat the matter--male and female principle. Thus are corolla and pistil related to each other. 3. SEED. 1301. The root repeats itself in the interior of the ovary under the æther-form. The root ascends out of the earth to become an organ of gravity. 1302. After the leaves have been made independent in the corolla, and the stalk in the pistil, the root also separates and appears as a free organ, as _Seed_. 1303. The seeds are necessarily in the interior of the ovary; for the cellular organ can first appear, after the leaf-and stalk-buds have opened as corolla and ovarium. The blossom is a bulb, the external testa or covering of which is the leaf-, the mediate the stalk-, and lastly, the internal the root-vesicle. The stalk is adherent to the leaves, the root to the stalk; so also the seeds to the ovary, and this to the corolla. 1304. The seeds are developed in the ovary under the same relations in which the root is developed in the earth, namely, in the dark. 1305. The darkness does not allow the chemical body to attain unto difference; therefore the sap within the capsule must, instead of separating itself into spiral vessels and leaf-substance, continue to remain there undivided and without form, i. e. in the condition of simple granules, or germs of future cells. 1306. The seeds, like the root, are a mass of cells; like it they contain an accumulation of mucus, but of course more highly-formed, being separated into flour, starch, acid matter, oil, and such like substances. 1307. These seminal substances are deposited upon the alkaline, in opposition to the acid, side of the ovary; just as the root also represents the alkaline factor in reference to the stalk, in which appears the formation of acids. 1308. The seeds are the pinnate leaflets of the ovarian leaves, which continue in the condition of buds. They stand therefore as unclosed vesicles upon both edges of the carpel, as is particularly distinct in the legumens. 1309. As both edges are similar to each other, so there can be no ovary that has fewer than two seeds. In all one-seeded ovaries therefore one seed has been arrested, a fact that admits too of being demonstrated in the majority of cases. 1310. Every seed is placed at the extremity of a lateral rib of the carpel. These lateral ribs are called seed-bearers or _placentæ_. If such lateral ribs terminate before reaching the edge of the carpel, then the seeds stand upon the juncture or wall of the carpel. This does not, however, occur frequently, but only in the Siliquosæ, poppies, and some others. The elongated lateral rib, whereupon the seed hangs, is called umbilical cord. It is no peculiar organ, but only the seed-petiole.