like manner produced through the perpetual modification of the first by the opposite forces of the second; that is, by the principle of contraction and difference at the eastern extreme—the element of fire, or the oxygen of the chemists; and by the elementary power of dilatation, or universality at its western extreme—the ὑδωρ ἐν ὑδατι of the ancients, and the hydrogen of the laboratory.
It has been before noticed that the progress of Nature is more truly represented by the ladder, than by the suspended chain, and that she expands as by concentric circles. This is, indeed, involved in the very conception of individuation, whether it be applied to the different species or to the individuals. In what manner the evident interspace is reconciled with the equally evident continuity of the life of Nature, is a problem that can be solved by those minds alone, which have intuitively learnt that the whole actual life of Nature originates in the existence, and consists in the perpetual reconciliation, and as perpetual resurgency of the primary contradiction, of which universal polarity is the result and the exponent. From the first moment of the differential impulse—(the primæval chemical epoch of the Wernerian school)—when Nature, by the tranquil deposition of crystals, prepared, as it were, the fulcrum of her after-efforts, from this, her first, and in part irrevocable, self-contraction, we find, in each ensuing production, more and more tendency to independent existence in the increasing multitude of strata, and in the relics of the lowest orders, first of vegetable and then of animal life. In the schistous formations, which we must here assume as in great measure the residua of vegetable creations, that have sunk back into the universal life, and in
