By the copy now communicated of a letter from Captain Bainbridge, of the _Philadelphia_ frigate, to our consul at Gibraltar, you will learn that an act of hostility has been committed on a merchant vessel of the United States by an armed ship of the Emperor of Morocco. This conduct on the part of that power is without cause and without explanation. It is fortunate that Captain Bainbridge fell in with and took the capturing vessel and her prize, and I have the satisfaction to inform you that about the date of this transaction such a force would be arriving in the neighborhood of Gibraltar, both from the east and from the west, as leaves less to be feared for our commerce from the suddenness of the aggression. On the 4th of September the _Constitution_ frigate, Captain Preble, with Mr. Lear on board, was within two days' sail of Gibraltar, where the _Philadelphia_ would then be arrived with her prize, and such explanations would probably be instituted as the state of things required, and as might perhaps arrest the progress of hostilities. In the meanwhile it is for Congress to consider the provisional authorities which may be necessary to restrain the depredations of this power should they be continued, TH. JEFFERSON. NOVEMBER 14, 1803. _To the Senate and House of Representatives of the United States_: I now communicate a digest of the information I have received relative to Louisiana, which may be useful to the Legislature in providing for the government of the country. A translation of the most important laws in force in that province, now in press, shall be the subject of a supplementary communication, with such further and material information as may yet come to hand. TH. JEFFERSON. NOVEMBER 24, 1803. _To the House of Representatives of the United States_: In conformity with the desire expressed in the resolution of the House of Representatives of the 15th instant, I now lay before them copies of such documents as are in possession of the Executive relative to the arrest and confinement of Zachariah Cox by officers in the service of the United States in the year 1798. From the nature of the transaction some documents relative to it might have been expected from the War Office; but if any ever existed there they were probably lost when the office and its papers were consumed by fire. TH. JEFFERSON. NOVEMBER 25, 1803. _To the Senate and House of Representatives of the United States_: The treaty with the Kaskaskia Indians being ratified with the advice and consent of the Senate, it is now laid before both Houses in their legislative capacity. It will inform them of the obligations which the United States thereby contract, and particularly that of taking the tribe under their future protection, and that the ceded country is submitted to their immediate possession and disposal. TH. JEFFERSON. NOVEMBER 29, 1803. _To the Senate and House of Representatives of the United States_: