Gentlemen, your whole concern should be to do your duty, and leave consequences to take care of themselves. You will receive the law from the court. Your verdict, it is true, may endanger the prisoner's life, but then it is to save other lives. If the prisoner's guilt has been shown and proved beyond all reasonable doubt, you will convict him. If such reasonable doubts of guilt still remain, you will acquit him. You are the judges of the whole case. You owe a duty to the public, as well as to the prisoner at the bar. You cannot presume to be wiser than the law. Your duty is a plain, straightforward one. Doubtless we would all judge him in mercy. Towards him, as an individual, the law inculcates no hostility; but towards him, if proved to be a murderer, the law, and the oaths you have taken, and public justice, demand that you do your duty. With consciences satisfied with the discharge of duty, no consequences can harm you. There is no evil that we cannot either face or fly from, but the consciousness of duty disregarded. A sense of duty pursues us ever. It is omnipresent, like the Deity. If we take to ourselves the wings of the morning, and dwell in the uttermost parts of the sea, duty performed, or duty violated, is still with us, for our happiness or our misery. If we say the darkness shall cover us, in the darkness as in the light our obligations are yet with us. We cannot escape their power, nor fly from their presence. They are with us in this life, will be with us at its close; and in that scene of inconceivable solemnity, which lies yet further onward, we shall still find ourselves surrounded by the consciousness of duty, to pain us wherever it has been violated, and to console us so far as God may have given us grace to perform it. THE CONSTITUTION NOT A COMPACT BETWEEN SOVEREIGN STATES. Mr. President,-The gentleman from South Carolina has admonished us to be mindful of the opinions of those who shall come after us. We must take our chance, Sir, as to the light in which posterity will regard us. I do not decline its judgment, nor withhold myself from its scrutiny. Feeling that I am performing my public duty with singleness of heart and to the best of my ability, I fearlessly trust myself to the country, now and hereafter, and leave both my motives and my character to its decision.