even the casting of votes for a candidate for President of the United States supposed to be favorable to the establishment of the free-labor system in the new States. "Hitherto, the two systems have existed in different States, but side by side within the American Union. This has happened because the Union is a confederation of States. But in another aspect, the United States constitute only one nation. Increase of population, which is filling the States out to their very borders, together with a new and extended net-work of railroads and other avenues, and an internal commerce which daily becomes more intimate, is rapidly bringing the States into a higher and more perfect social unity or consolidation. Thus these antagonistic systems are continually coming into closer contact, and collision results. "Shall I tell you what this collision means? They who think that it is accidental, unnecessary, the work of interested or fanatical agitators, and therefore ephemeral, mistake the case altogether. It is an irrepressible conflict between opposing and enduring forces, and it means that the United States must and will, sooner or later, become either entirely a slaveholding nation, or entirely a free-labor nation. Either the cotton and rice fields of South Carolina and the sugar plantations of Louisiana will ultimately be tilled by free labor, and Charleston and New Orleans become marts for legitimate merchandise alone, or else the rye fields and wheat fields of Massachusetts and New York must again be surrendered by their farmers to slave culture and to the production of slaves, and Boston and New York become once more markets for trade in the bodies and souls of men. It is the failure to apprehend this great truth that induces so many unsuccessful attempts at final compromise between the slave and free States, and it is the existence of this great fact that renders all such pretended compromises, when made, vain and ephemeral. Startling as this saying may appear to you, fellow-citizens, it is by no means an original or even a modern one. Our forefathers knew it to be true, and unanimously acted upon it when they framed the Constitution of the United States. They regarded the existence of the servile system in so many of the States with sorrow and shame, which they openly confessed, and they looked upon the collision between them, which was then just revealing itself, and which we are now accustomed to deplore, with favor and hope. They knew that either the one or the other system must exclusively prevail.