If the showing already made, in regard to the seditious _organization_ of the American Anti-slavery Society, be a fair one, its action as such becomes a conspiracy in the Republic, so far as it militates against its political fabric. It is no more than fair to notice, that in the first article of the Constitution of this Society, it is assumed, that “slavery is contrary to the principles of _our_ republican form of government.” This is a very material point, vital, fundamental, so far as it relates to the question now in hand. The truth of this assumption would justify the _cause_, in which this Society are engaged, so long as it should be sustained in a Constitutional way; though it cannot justify an independent political organization in the Republic for such an object. We have already pointed out, as we trust clearly, the only Constitutional modes of political action for reform, or any other purposes, under the Government; and shown that this Society is unconstitutional. The truth of this assumption, therefore, would not justify its mode of action, and it would still be open to the charge of sedition. But, let us see, whether this assumption be true. “Slavery is contrary to the principles of _our_ republican form of government.” If they mean to say, it is contrary to the principles of the free States, as recognised and established for their own separate jurisdictions, it is true. But it was quite unnecessary to say it, as all the world knew it before. If they mean to say it is contrary to the principles of a republican form of government in the _abstract_, as a _theory_, it may be true, or it may be false, and depends entirely upon the character of the theory that is set up. This is a question, which cannot easily be settled, because it is a matter of _opinion_, not of _fact_. The people of the South would be on one side, and those of the North on the other; and we ourself, be it known, should be on the side of the North. If the question be as to the _common_ opinion, prevalent among mankind, of the principles of a republican form of government, this Society is doubtless right on _that_ ground. But we apprehend, indeed we know, and every body knows, that it is not a question of opinion, but of fact, that is involved in this assumption. Did the Society mean to say, that “slavery is contrary to the principles” of the Slave-holding States? Manifestly not. What, then, did they mean? Contrary to the principles of the Government of the United States, undoubtedly. “Slavery is contrary to the principles of _our_ Republican form of Government.” We say, then, that as a _fact_, this is _false_; and we need travel no further to prove it, than from the Preamble of the Constitution of this Society, in which this assertion is made, to the second Article, where we find this clause: “While it (the Society) admits, that each State, in which slavery exists, has the _exclusive_ right, _by the Constitution of the