I take the opportunity afforded by the return of Mr. Clay to St. Petersburg to write to you, in the certainty that the letter will be safely delivered. The compromising tariff act passed at the last session has been accepted pretty generally at the South, and has been received at the North much better than I expected, so that the alarm and anxiety which existed on the subject have been removed. Much clamor, however, is yet kept up at the South, including Virginia, on the subject of the President’s 10th December proclamation, and what is called the enforcing bill. The proclamation in my opinion contains the true Union doctrine, and does General Jackson great honor; and the enforcing bill was absolutely called for by the attitude which South Carolina had assumed. The State rights gentlemen, however, in the South, are for denying all right to the Union, as if the two governments were not formed by the same people and for their benefit. Absurd as these State rights doctrines are when carried fully out, I fear they will be pushed to an open rebellion by the Southern States before many years shall elapse. I was in hopes that when Mr. Livingston went to France, as he will do probably in June next, that you would have been called to the Department of State, but it seems a different arrangement is to be made. Mr. McLane is to go to the Department of State, and it is said a gentleman from Pennsylvania, who has never been spoken of for the Treasury, is to be appointed to that department. As Dallas and Wilkins have been much talked of for this department, I am somewhat in hopes that the person referred to may be yourself. Be that as it may, I feel pretty confident that you will be elected to the Senate of the United States at the next meeting of the legislature, if you should be at home in season. They have made two or three trials to elect a senator during the session without effect, and from all I can learn the legislature will adjourn without making an election, so that the election will lie over until the next session. Mrs. Pleasonton is now pretty well, though she has had several severe attacks in the course of the winter. Mathilda, with her husband, left us yesterday morning for Philadelphia. She had been ill for nearly two months, and was not able to leave us until yesterday. Augustus is exceedingly studious and is getting a good share of professional business. I have great hopes of him. Laura is still in Philadelphia, but will complete her education in the month of May. Mrs. P. intended to have written to you but she has not had it in her power, having been much engaged for Mathilda. I send you by Mr. Clay, copies, or rather duplicates, of two letters written to you some time ago about your accounts. Mr. Clay can inform you of many particulars which will interest you, but I presume will say nothing of his friend [John] Randolph, who is now decidedly and zealously in the opposition. He was here lately and behaved in the most eccentric manner.