"This arrangement may be made in the following manner. A right line should be drawn from the eastern angle of the Gulf of Mexico, which makes the section between the two Floridas, to Fort Toulouse, situated in the country of the Alabamas; from thence the river Loneshatchi should be ascended, from the mouth of which a right line should be drawn to the Fort or Factory Quenassee; from this last place, the course of the river Euphasee is to be followed till it joins the Cherokee; the course of this last river is to be pursued to the place where it receives the Pelisippi; this last to be followed to its source, from whence a right line is to be drawn to Cumberland river, whose course is to be followed until it falls into the Ohio. The savages to the westward of the line described should be free under the protection of Spain; those to the eastward should be free, and under the protection of the United States; or rather, the Americans may make such arrangements with them, as is most convenient to themselves. The trade should be free to both parties.
"By looking over the chart we shall find, that Spain would lose almost the whole course of the Ohio, and that the establishments, which the Americans may have on this river, would remain untouched, and that even a very extensive space remains to form new ones.
"As to the course and navigation of the Mississippi, they follow with the property, and they will belong, therefore, to the nation to which the two banks belong. If then, by the future treaty of peace, Spain preserves West Florida, she alone will be the proprietor of the course of the Mississippi from the thirtyfirst degree of latitude to the mouth of this river. Whatever may be the case with that part, which is beyond this point to the north, the United States of America can have no pretensions to it, not being masters of either border of this river.
"As to what respects the lands situated to the northward of the Ohio, there is reason to presume that Spain can form no pretensions thereto. Their fate must be regulated with the Court of London."
I did not return M. Rayneval any answer to his letter, nor any remarks on his memoir, but the first time I saw him afterwards I told him, I had received his letter and memoir he had done me the honor to write, and that I should send a copy of it to our Secretary for Foreign Affairs.
As both the letter and memoir were ostensibly written by him in a private character, it did not appear to me expedient or necessary to enter into any formal discussions with him on those subjects.
The perusal of this memoir convinced me,
1st. That this Court would, at a peace, oppose our extension to the Mississippi.
2dly. That they would oppose our claim to the free navigation of that river.
3dly. That they would probably support the British claims to all the country above the 31st degree of latitude, and certainly to all the country north of the Ohio.