About a twelvemonth after I came to the administration of the government, Mr. Clark gave some verbal information to myself, as well as to the Secretary of State, relating to the same combinations for the dismemberment of the Union. He was listened to freely, and he then delivered the letter of Governor Gagoso, addressed to himself, of which a copy is now communicated. After his return to New Orleans, he forwarded to the Secretary of State other papers, with a request that, after perusal, they should be burned. This, however, was not done, and he was so informed by the Secretary of State, and that they would be held subject to his order. These papers have not yet been found in the office. A letter, therefore, has been addressed to the former chief clerk, who may, perhaps, give information respecting them. As far as our memories enables us to say, they related only to the combinations before spoken of, and not at all to the corrupt receipt of money by any officer of the United States; consequently, they respected what was considered as a dead matter, known to the preceding administrations, and offering nothing new to call for investigations, which those nearest the dates of the transactions had not thought proper to institute. In the course of the communications made to me on the subject of the conspiracy of Aaron Burr, I sometimes received letters, some of them anonymous, some under names true or false, expressing suspicions and insinuations against General Wilkinson. But one only of them, and that anonymous, specified any particular fact, and that fact was one of those which had already been communicated to a former administration. No other information within the purview of the request of the house is known to have been received by any department of the government from the establishment of the present federal government. That which has recently been communicated to the House of Representatives, and by them to me, is the first direct testimony ever made known to me, charging General Wilkinson with the corrupt receipt of money; and the House of Representatives may be assured that the duties which this information devolves on me shall be exercised with rigorous impartiality. Should any want of power in the court to compel the rendering of testimony, obstruct that full and impartial inquiry, which alone can establish guilt or innocence, and satisfy justice, the legislative authority only will be competent to the remedy. SPECIAL MESSAGE.--JANUARY 30, 1808. _To the Senate and House of Representatives of the United States_:--