detention or otherwise, to which American citizens have heretofore been or may hereafter be subjected by the exercise of rights which this Government can not recognize as legitimate and proper. Nor will I indulge a doubt but that the sense of justice of Great Britain will constrain her to make retribution for any wrong or loss which any American citizen engaged in the prosecution of lawful commerce may have experienced at the hands of her cruisers or other public authorities. This Government, at the same time, will relax no effort to prevent its citizens, if there be any so disposed, from prosecuting a traffic so revolting to the feelings of humanity. It seeks to do no more than to protect the fair and honest trader from molestation and injury; but while the enterprising mariner engaged in the pursuit of an honorable trade is entitled to its protection, it will visit with condign punishment others of an opposite character. I invite your attention to existing laws for the suppression of the African slave trade, and recommend all such alterations as may give to them greater force and efficacy. That the American flag is grossly abused by the abandoned and profligate of other nations is but too probable. Congress has not long since had this subject under its consideration, and its importance well justifies renewed and anxious attention. I also communicate herewith the copy of a correspondence between Mr. Stevenson and Lord Palmerston upon the subject, so interesting to several of the Southern States, of the rice duties, which resulted honorably to the justice of Great Britain and advantageously to the United States. At the opening of the last annual session the President informed Congress of the progress which had then been made in negotiating a convention between this Government and that of England with a view to the final settlement of the question of the boundary between the territorial limits of the two countries. I regret to say that little further advancement of the object has been accomplished since last year, but this is owing to circumstances no way indicative of any abatement of the desire of both parties to hasten the negotiation to its conclusion and to settle the question in dispute as early as possible. In the course of the session it is my hope to be able to announce some further degree of progress toward the accomplishment of this highly desirable end. The commission appointed by this Government for the exploration and survey of the line of boundary separating the States of Maine and New Hampshire from the conterminous British Provinces is, it is believed, about to close its field labors and is expected soon to report the results of its examinations to the Department of State. The report, when received, will be laid before Congress.