With regard to the Treaty of St. Ildefonso, Mr. N. said, he should have no objection to its being laid before the House, if it was in the possession of the Executive. In all probability, however, this was not the case, as it was known to be a secret treaty on other subjects of great importance between France and Spain. As to the deed of cession spoken of, he really did not understand what was meant, for he imagined it was not expected a formal deed of bargain and sale had been executed between two civilized nations, who negotiated by means of ambassadors. If there were any other papers which could give gentlemen more information, he had no objection, either, that these should be laid before them. Not indeed for his own satisfaction, but for that of those who were not already satisfied, if there were any of that description. One very important paper, he knew from high authority, was certainly in existence, and possibly might be in the power of the Executive. This was a formal order, under the royal signature of Spain, commanding the Spanish officers at Orleans to deliver the province to the French Prefect, which he considered equal, perhaps superior to any deed of cession; for it was equal to an express recognition on the part of Spain, that France had performed all the conditions referred to in the Treaty of St. Ildefonso. It was an acknowledgment that Spain had no further claims upon Louisiana, and would show that any interference on her part ought to have no influence on the American Government. Mr. MITCHELL said he rose to express his sentiments against the whole body of the resolution under debate. But his disinclination to adopt it did not arise from any doubt of the right which the House possessed to call upon the Executive for information. He had no hesitation to ask the President for papers whenever it was necessary to obtain them. And it was equally clear to him that whenever that dignified officer was properly applied to, he would comply cheerfully with the request of Congress, or of either branch of it. He owned that in some cases it would be the duty of the House to pursue this mode of inquiry, and equally would it be the duty of the head of the Executive Department to give his aid and countenance.