My Dear Sir: The commission to confer with the Northern Government returned yesterday evening. I have not seen any of the gentlemen, but learn on good authority that nothing was effected of a beneficial nature, except that a general exchange of prisoners on parole may be looked for. They were met on shipboard by Messrs. Lincoln and Seward in person, (in sight of Fortress Monroe,) who said they could entertain no proposition looking to the independence of the Southern States, and could only offer that these States should return to the Union under the Constitution in the existing condition of affairs, with slavery as it is, but liable to be abolished by an amendment of the Constitution. They brought also the information that Congress, on Wednesday last, had passed a bill, by a vote of one hundred and eighteen to fifty-four, to amend the Constitution, so as to abolish slavery in the States, which is to be submitted to the State Legislatures for approval of three fourths. These officers are said to have exhibited great courtesy and kindness in the interview, Lincoln recurring to what he had been willing to do in the outset, and from time to time since, but that public opinion now demanded his present ultimatum. The Commissioners saw large numbers of black troops on their journey. I have seen but few persons to-day; but the impression will be that there is no alternative but to prosecute the war. The administration is weak in the estimation of Congress, and a vote of want of confidence could be carried through the Senate if approved by those it has been accustomed to consider Opposition. I am not sure that this vote will not be carried as to the Secretary of State. Senator Hill left yesterday for Georgia, to attend the session of the Legislature, and endeavor to revive public confidence, etc. The committee of our Legislature left the evening before the return of the Commissioners, disposed, I believe, to await further progress of events. The situation is critical, and requires a guidance beyond human ken. Very truly yours. RICHMOND, Feb. 12, 1865.