Whoever the author of the Vestiges may be, he has evidently lived in a religious community, and felt the influence of a religious atmosphere; for he tries to conform his system as much as possible to the principles of Protestant Christianity. In other words, he feels so much the power of practical piety around him, that he does not suffer the influence of the system which he advocates to exhibit itself fully, nor to drive him into those extravagances of belief which naturally result from it. In order to see what is its natural tendency, we need to go to such a country as Germany, or Switzerland, where there is little to restrain the wildest vagaries of belief. In the works of Professor Lorenz Oken, of Zurich, we see fully developed the tendencies and results of this hypothesis of development by law, combined with the unintelligible idealism of Kant, Fichte, Schelling, &c. In his Physio-philosophy, translated by the Ray Society for the edification of sober, matter-of-fact Anglo-Saxons, we find a man, of strong mind and extensive knowledge, taking the most ridiculous positions with the stoutest dogmatism, and the most imperturbable gravity, yet whose blasphemy is equalled only by their absurdity. Let a few quotations illustrate and confirm this statement. "The highest mathematical idea, or the fundamental principle of all mathematics, is the zero == 0. "Zero is in itself nothing. Mathematics is based upon nothing, and consequently arises out of nothing. "Real and ideal are no more different from each other than ice and water: both of these, as is well known, are essentially one and the same, and yet are different, the diversity consisting in the form. Every real is absolutely nothing else than a number. "The Eternal is the nothing of nature. "There is no other science than that which treats of nothing. "There exists nothing but nothing--nothing but the Eternal. "Every thing in the world is endowed with life; the world itself is alive, and continues only, maintains itself by virtue of its life. "Man is God wholly manifested. God has become man, zero has become + --. Man is the whole of arithmetic, compacted, however, out of all numbers; he can, therefore, produce numbers out of himself. "Animals are men who never imagine. They are beings who never attain to consciousness concerning themselves. They are single accounts; man is the whole of mathematics. "Arithmetic is the truly absolute or divine science. Theology is arithmetic personified. "For God to become real, he must appear under the form of the sphere. There is no other form for God. God manifesting is an infinite sphere. "God is a rotating globe; the world is God rotating. "The whole universe is material, is nothing but matter; for it is the primary act repeating itself eternally in the centre. The universe is a rotating globe of matter.