electricity, and constructive power, till we arrive at the point representative of a new and far higher intensity. For from this point flow, as in opposite directions, the two streams of vegetation and animalization, the former characterised by the predominance of magnetism in its highest power, as reproduction, the other by electricity intensified—as irritability, in like manner. The vegetable and animal world are the thesis and antithesis, or the opposite poles of organic life. We are not, therefore, to seek in either for analogies to the other, but for counterpoints. On the same account, the nearer the common source, the greater the likeness; the farther the remove, the greater the opposition. At the extreme limits of inorganic Nature, we may detect a dim and obscure prophecy of her ensuing process in the twigs and rude semblances that occur in crystallization of some of the copper ores, and in the well-known _arbor Dianæ_, and _arbor Veneris_. These latter Ritter has already ably explained by considering the oblique branches and their acute angles as the result of magnetic repulsion, from the presentation of the same poles, &c. In the CORALS and CONCHYLIA, the whole act and purpose of their existence seems to be that of connecting the animal with the inorganic world by the perpetual formation of calcareous earth. For the corals are nothing but polypi, which are characterised by still passing away and dissolving into the earth, which they had previously excreted, as if they were the first feeble effort of detachment. The power seems to step forward from out the inorganic world only to fall back again upon it, still, however, under a new form, and under the predominance of the more active pole of magnetism. The product must have the same connexion, therefore, with azote, which the first rudiments of vegetation have with carbon: the one and the other exist not for their own sakes, but in order to produce the conditions best fitted for the production of higher forms. In the polypi, corallines, &c., individuality is in its first dawn; there is the same shape in them all, and a multitude of animals form, as it were, a common animal. And as the individuals run into each other, so do the different genera. They likewise pass into each other so indistinguishably, that the whole order forms a very network.