In regard to the subject of slavery, what we want is security for the future. That we can arrange. In my opinion you will never get back the seceded States, without you give them some hope of the acquisition of future territory. They know that when slavery is gathered into a _cul-de-sac_, and surrounded by a wall of free States, it is destroyed. Slavery must have expansion. It must expand by the acquisition of territory which now we do not own. The seceded States will never yield this point--will never come back to a Government which gives no chance for the expansion of their principal institution. They will insist upon equity, upon the same rights with you in the common territory, and the same prospect, of acquiring foreign territory that you have. If you are not prepared to grant all this, do not waste your time in thought about the return of the seceded States. Mr. RANDOLPH:--New Jersey voted to make the first section of the article reported applicable to future territory, not because she wishes to acquire new territory, but because she knows that it will be acquired; and she believes all questions raised here can be settled now, in regard to it, better than they can be hereafter. These questions have raised a ferment in the nation; we would settle them any way. We should have voted for these restrictions upon the power of acquiring territory; and still we cannot shut our eyes to the fact that in a few years new territory must be acquired. Look at Sonora, at all Mexico; they furnish the reason for our action. An effort will be made, perhaps, to secure the new territory by treaty. Better get it in that way than by conquest. Personally, I would oppose any farther acquisitions. We need no more territory, and yet I know that more will be acquired. The North wishes it more than the South. In the end, the North will insist that we should have Cuba. What is the sentiment of our commercial cities now? I think we ought to surround this power of acquisition by some judicious restrictions; not make them too strong, or the country will break over, and not regard them. What restriction would not have been broken down, when the question came up in relation to Texas? We must anticipate occasions of the same kind. I am inclined to vote for the substitute of the gentleman from Virginia. At all events let us adopt some limitations. If not these, then such as are contained in the original article. Mr. JOHNSON, of Maryland:--I propose to amend the substitute offered by the gentleman from Virginia, by inserting after the words "United States," the words "except by discovery, and for naval and commercial depots and transit routes."