I transmit to Congress a letter from our ministers plenipotentiary at London, informing us that they have agreed with the British commissioners to conclude a treaty on all the points which had formed the object of their negotiation, and on terms which they trusted we would approve.

Also a letter from Cowles Mead, secretary of the Mississippi Territory, acting as governor, informing us that Aaron Burr had surrendered himself to the civil authority of that Territory.

From two of the States no returns have ever been received.

The efficacy of gunboats for the defense of harbors and of other smooth and inclosed waters may be estimated in part from that of galleys formerly much used but less powerful, more costly in their construction and maintenance, and requiring more men.

It must be superfluous to observe that this species of naval armament is proposed merely for defensive operation; that it can have but little effect toward protecting our commerce in the open seas, even on our own coast; and still less can it become an excitement to engage in offensive maritime war, toward which it would furnish no means.

I communicate, for the information of Congress, a letter from Cowles Mead, secretary of the Mississippi Territory, to the Secretary of War, by which it will be seen that Mr. Burr had reached that neighborhood on the 13th of January

I now lay his memoir thereon before the Legislature, the only authority competent to a final decision on the same.

I lay before Congress the laws for the government of Louisiana, passed by the governor and judges of the Indiana Territory at their session at Vincennes begun on the 1st of October, 1804.

The progress which they made in the execution of the work during the last season will appear in their report now communicated to Congress.

Some matters suggested in the report belong exclusively to the Legislature.

I have received acts of the legislatures of Maryland and Virginia giving the consent desired; that of Pennsylvania has the subject still under consideration, as is supposed.

Until I receive full consent to a free choice of route through the whole distance I have thought it safest neither to accept nor reject finally the partial report of the commissioners.

we may now estimate with tolerable certainty the means derived from the Ohio and its waters toward the accomplishment of the purposes of Mr. Burr.

No occasion having arisen for making use. of any part of the balance of $18,012.50, unexpended on the 31st day of December, 1805, that balance remains in the Treasury.

I immediately delivered to the attorney of the United States in this district the evidence received against them, with instructions to lay the same before the judges and apply for their process to bring the accused to justice.

The mass of what I have received in the course of these transactions is voluminous, but little has been given under the sanction of an oath so as to constitute formal and legal evidence.

Great zeal was shewn by the inhabitants generally, the merchants of the place readily agreeing to the most laudable exertions and sacrifices for manning the armed vessels with their seamen.

Information now recently communicated has brought us nearly to the period contemplated.