The Proclamation by the President, of which a copy is inclosed,1 will inform you, that in pursuance of his authority to convene Congress on extraordinary occasions, he has appointed Monday the 17th day of October next for the meeting of the Senators and Representatives of the United States. This anticipation of the commencement of the ensuing session is rendered necessary by conventions with the French Republic, involving a cession of Louisiana to the United States; which may require the presence of both Houses, and of which conventions the ratifications are to be exchanged within six months computed from the 30th of April last. The shortness of the period therefore, to which the necessary proceedings will be limited, with the very great importance of the subject to the interest of the United States, claim from every member the most punctual attendance; and I am charged by the President to urge these considerations on your patriotism, and your sense of duty. Assuring myself that they will have all the effect which he justly expects from them. I remain, Sir, With the highest respect, Your most obedient Servant,