While advancing these high claims for Swedenborg, in astronomical science and theory, it is but right to remove from the public mind an erroneous idea, which, like his titles of Baron and Count, has no foundation in fact. We allude to his common repute as the announcer of the existence of the seventh planet, Uranus, discovered by Herschel in 1781. That he announced the existence of this planet long before its actual discovery, has been stated innumerable times, at home and abroad; and Emerson in his lecture on the Mystic, takes opportunity to be witty in regretting that he did not discover the eighth. The mistake has arisen from Swedenborg’s talking of a seventh planet in “The Worship and Love of God,” a book of his yet to be noticed. Now the belief in the existence of a seventh planet was entertained by most of the astronomers of his day, and even so far back as Kepler, in 1584. Swedenborg, in speaking as he did, only expressed a general idea. Astronomers observing the wide space between the orbits of Mars and Jupiter conjectured that some planet must roll between. The after discovery of numerous asteroids between these orbits, gave some show of truth to their conjectures. It was of this supposed planet between Mars and Jupiter, and not of Uranus, (afterwards discovered by Sir William Herschel,) that Swedenborg spoke. In magnetism, as in astronomy, the “Principia” is no less rich in original thought and discovery. It was not until the close of the eighteenth century that the position of the magnetic equator was discovered to be different from that of the geographical. After observations confirmed the fact that the mean latitudinal positions of the magnetic poles and equators, are identical with those of the earth’s ecliptic and ecliptical poles. This fact, over which there has been much congratulation, was set forth in the “Principia” many years before it was confirmed by actual observation. Again, the fact that the southern magnetic pole has a longer axis from the center of the magnetic equator, than the northern, and hence occupies a higher latitudinal position; and, as a consequence, that the revolution of the north magnetic pole is quicker than that of the southern; also that the south magnetic pole possesses a greater attractive force than the north,—facts not suspected till the investigations of Hansteen in 1819, and only fully confirmed by observation very recently,—were all proclaimed in the “Principia” nearly a century before positive science had embraced them in her domain. Swedenborg also takes precedence of all other discoverers in the announcement of the identity of the magnetic streams forming the aurora, and those influencing the magnetic needle. So full is the “Principia” of truths respecting magnetism,—which the world generally supposes to be a novelty of the present day—that we could not imagine a greater pleasure or surprise awaiting any one devoted to the prosecution of magnetic