In speaking of the economical connections of slavery, with the other material interests of the world, we have called it a _tripartite alliance_. It is more than this. It is _quadruple_. Its structure includes four parties, arranged thus: The Western Agriculturists; the Southern Planters; the English Manufacturers; and the American Abolitionists! By this arrangement, the abolitionists do not stand in direct contact with slavery; they imagine, therefore, that they have clean hands and pure hearts, so far as sustaining the system is concerned. But they, no less than their allies, aid in promoting the interests of slavery. Their sympathies are with England on the slavery question, and they very naturally incline to agree with her on other points. She advocates _Free Trade_, as essential to her manufactures and commerce; and they do the same, not waiting to inquire into its bearings upon _American slavery_. We refer now to the people, not to their leaders, whose integrity we choose not to indorse. The free trade and protective systems, in their bearings upon slavery, are so well understood, that no man of general reading, especially an editor, or member of Congress, who professes anti-slavery sentiments, at the same time advocating free trade, will ever convince men of intelligence, pretend what he may, that he is not either woefully perverted in his judgment, or emphatically, a "dough-face" in disguise! England, we were about to say, is in alliance with the cotton planter, to whose prosperity free trade is indispensable. Abolitionism is in alliance with England. All three of these parties, then, agree in their support of the free trade policy. It needed but the aid of the Western farmer, therefore, to give permanency to this principle. His adhesion has been given, the _quadruple alliance_ has been perfected, and slavery and free trade _nationalized_!