It is understood that representatives from the three States were about to assemble at Bogota to confer on the subject of their mutual interests, particularly that of their union, and if the result should render it necessary, measures will be taken on our part to preserve with each that friendship and those liberal commercial connections which it has been the constant desire of the United States to cultivate with their sister Republics of this hemisphere. Until the important question of reunion shall be settled, however, the different matters which have been under discussion between the United States and the Republic of Colombia, or either of the States which composed it, are not likely to be brought to a satisfactory issue. In consequence of the illness of the chargé d'affaires appointed to Central America at the last session of Congress, he was prevented from proceeding on his mission until the month of October. It is hoped, however, that he is by this time at his post, and that the official intercourse, unfortunately so long interrupted, has been thus renewed on the part of the two nations so amicably and advantageously connected by engagements founded on the most enlarged principles of commercial reciprocity. It is gratifying to state that since my last annual message some of the most important claims of our fellow-citizens upon the Government of Brazil have been satisfactorily adjusted, and a reliance is placed on the friendly dispositions manifested by it that justice will also be done in others. No new causes of complaint have arisen, and the trade between the two countries flourishes under the encouragement secured to it by the liberal provisions of the treaty. It is cause of regret that, owing, probably, to the civil dissensions which have occupied the attention of the Mexican Government, the time fixed by the treaty of limits with the United States for the meeting of the commissioners to define the boundaries between the two nations has been suffered to expire without the appointment of any commissioners on the part of that Government. While the true boundary remains in doubt by either party it is difficult to give effect to those measures which are necessary to the protection and quiet of our numerous citizens residing near that frontier. The subject is one of great solicitude to the United States, and will not fail to receive my earnest attention. The treaty concluded with Chili and approved by the Senate at its last session was also ratified by the Chilian Government, but with certain additional and explanatory articles of a nature to have required it to be again submitted to the Senate. The time limited for the exchange of the ratifications, however, having since expired, the action of both Governments on the treaty will again become necessary.