As our armies advance, for instance, very considerable regions of territory come, for the time, under the military government of the United States. If we painted a map of the country, giving to the Loyal States each its individual chosen color, and to the Rebel States their favorite Red or Black, we should find that the latter were surrounded by a strip of that circumambient and eternal Blue which indicates the love and the strength of the National Government. The strip is here broad, and there narrow. It is broad in Tennessee, Arkansas, and Louisiana. It stretches up in a narrow line along the Sea Islands and the Atlantic coast. What do we mean to do with this strip, while it is in the special charge of the nation? Do we mean to leave it to the chapter of accidents, as we have done? A few charitable organizations have kept the Sea Islands along, so that they are a range of flourishing plantations, as they used to be. A masterly inactivity, on the other hand, leaves the northern counties of Virginia, this summer, within the very sight of the Capitol, to be the desert and disgrace which they were when they were the scenes of actual war. A handful of banditti rides through them when it chooses, and even insults the communications of our largest army. The people of that State are permitted to point at this desolation, and to say that such are the consequences of Federal victories. For another instance, take the "Four-Million question." These four million negroes, from whose position the war has sprung, are now almost all set free, in law. A very large number of them--possibly a quarter part of them--are free in fact. One hundred and thirty thousand of them are in the national army. With regard to these men the question is not, "What are you going to do with them when the war is done?" but, "What will you do with them to-day and to-morrow?" Your duty is to use victory in the moment of victory. You are not to wait for its last ramification before you lead in peace and plenty, which ought to follow close in its first footsteps.