SIR,--I have just now received from the Secretary at War, a letter to him from the Secretary of the territory of Louisiana, requesting him to tender to the President of the United States the services of the members of the Military School of the Mine à Burton, as a volunteer corps, under the late act of Congress authorizing the acceptance of the services of volunteer corps. As you are now proceeding to take upon you the government of that territory, I pray you to be the bearer of my thanks to them for this offer, and to add the pleasure it gives me to receive further their assurances that they will cordially co-operate in the restoration of that harmony in the territory, so essential to its happiness, and so much desired by me. They, as well as all the other inhabitants of the territory, may rest satisfied that all the authorities of the general government entertain towards them the most liberal and paternal dispositions, and wish nothing more ardently than to do for their happiness whatever these dispositions may dictate. Want of information, or misinformation, may defeat their first efforts towards this object, but as they advance in obtaining more correct knowledge of their situation, they will be able to establish for them in the end such regulations as will secure their religious, political and civil rights. As the direction of the militia will be in your hands, I must request you to exercise for me the powers given by the act above mentioned, respecting volunteers, and to arrange them to the best advantage for the prompt and effectual defence of the territory. I salute you with friendship and respect. TO THE SECRETARY OF STATE. MONTICELLO, August 9, 1807.