DEAR SIR,--I received yesterday your favor of the 11th. An error of the post office had occasioned the delay. Before an impartial jury, Burr's conduct would convict himself, were not one word of testimony to be offered against him. But to what a state will our law be reduced by party feelings in those who administer it? Why do not Blannerhassett, Dayton, &c., demand private and comfortable lodgings? In a country where an equal application of law to every condition of man is fundamental, how could it be denied to them? How can it ever be denied to the most degraded malefactor? The enclosed letter of James Morrison, covering a copy of one from Alston to Blannerhassett, came to hand yesterday. I enclose them, because it is proper all these papers should be in one deposit, and because you should know the case and all its bearings, that you may understand whatever turns up in the cause. Whether the opinion of the letter writer is sound, may be doubted. For, however these, and other circumstances which have come to us, may induce us to believe that the bouncing letter he published, and the insolent one he wrote to me, were intended as blinds, yet they are not sufficient for legal conviction. Blannerhassett and his wife could possibly tell us enough. I commiserate the suffering you have to go through in such a season, and salute you with great esteem and respect. TO THE SECRETARY AT WAR. MONTICELLO, August 28, 1807. DEAR SIR,--I had had the letter of Mr. Jouett of July 6th from Chicago, and that from Governor Hull, of July 14th, from Detroit, under consideration some days, when the day before yesterday I received that of the Governor of July 25th. While it appeared that the workings among the Indians of that neighborhood proceeded from their prophet chiefly, and that his endeavors were directed to the restoring them to their ancient mode of life, to the feeding and clothing themselves with the produce of the chase, and refusing all those articles of meat, drink, and clothing, which they can only obtain from the whites, and are now rendered necessary by habit, I thought it a transient enthusiasm, which, if let alone, would evaporate innocently of itself; although visibly tinctured with a partiality against the United States. But the letters and documents now enclosed give to the state of things there a more serious aspect; and the visit of the Governor of Upper Canada, and assembling of the Indians by him, indicate the object to which these movements are to point. I think, therefore, we can no longer leave them to their own course, but that we should immediately prepare for war in that quarter, and at the same time redouble our efforts for peace.