The whole of the Chapter devoted to “the Theory of the Solar System,” is distinguished by remarkable ingenuity and originality. It is, however, that entitled _the Argument from Design_, which, independently of all connection with the speculations of the author as already laid before our readers, is worthiest of consideration, by all interested in Natural Theology. It touches many topics which must have occupied the profoundest thoughts of mankind, and touches them with the utmost caution and delicacy. In the 34th Section will be found a passage of singular boldness and imaginative eloquence; but liable, in our opinion, to serious misconception, and susceptible of misrepresentation—by those, at least, who are either unable, or indisposed, to weigh the entire chapter, and ascertain its real value and tendency. Some expressions have startled us not a little, when reflecting that they relate to the possible mode of action of Omniscient Omnipotence; and we shall be gratified by seeing them vindicated or explained in the next edition of his “Essay.” Each of our speculators closes his book with a chapter devoted to “The Future.” The ideas of Sir David concerning the duration of the human race upon the earth (which Inspiration tells us is so awfully uncertain, and will be cut short suddenly—in a moment—in _the twinkling of an eye_), seem to be curiously definite; for we have seen that in his sixth chapter he states that “from the birth of man to the extinction of his race, the Solar System to which he belongs will have described but an infinitesimal arc in that grand cosmical orbit in which it is destined to move.” Without pausing to ask who told him this, let us intimate, that in his final chapter he says that the scientific truths on which depends the plurality of worlds are intimately associated with the future destiny of man: he turns to the future of the sidereal systems, as the hallowed spots in which is to be spent his immortal existence. Scripture has not spoken articulately of the future locality of the blest; but Reason has combined the scattered utterances of Inspiration, and with an almost oracular voice declared that the Maker of the worlds will place _in these_ the beings of his choice. In what region, reason does not determine; but it is _impossible_ for man, with the light of Revelation as his guide, to doubt for a moment that on the celestial spheres his future is to be spent in lofty inquiries; social intercourse; the renewal of domestic ties; and in the service of his Almighty benefactor. The Christian’s future, not defined in his creed, enwrapt in apocalyptic mysteries, evades his grasp: it is only Astronomy that opens the mysterious expanse of the Universe to his eye, and creates an intelligible paradise in the world to come: wherefore, says Sir David, we must impregnate the popular mind with the truths of natural science; teaching them in every school, and recommending, if not