I then gave him a copy of my commission, and showed him the original. He returned it to me with expressions of satisfaction, and then changed the subject, by desiring me, if after receiving his map and examining his lines, I should find it in any respect inconvenient, that I would mark such other line on it as would, in my opinion, be more agreeable to America; assuring me, that he had nothing more at heart, than to fix such a boundary between us as might be satisfactory to both parties. I told him, that on receiving his map, I would take all that he had said into consideration, and take the earliest opportunity of acquainting him with my sentiments respecting it. I then observed, that I hoped his powers to treat were equal with mine. He replied, that he had ample powers to confer, but not to sign anything without previously communicating it to his Court, and receiving their orders for the purpose; but to my surprise, he did not offer to show me any powers of any kind.[5]
A few days afterwards he sent me the same map, with his proposed line marked on it in red ink. He ran it from a lake near the confines of Georgia, but east of the Flint River, to the confluence of the Kanawa with the Ohio, thence round the western shores of lakes Erie and Huron, and thence round lake Michigan to lake Superior.
On the 10th of August I carried this map to the Count de Vergennes and left it with him. Dr Franklin joined with me in pointing out the extravagance of this line; and I must do him the justice to say, that in all his letters to me, and in all his conversations with me respecting our western extent, he has invariably declared it to be his opinion, that we should insist upon the Mississippi as our western boundary, and that we ought not, by any means, to part with our right to the free navigation of it.
The Count de Vergennes was very cautious and reserved; but M. Rayneval, his principal Secretary, who was present, thought we claimed more than we had a right to.
Having thus clearly discovered the views of Spain, and that they were utterly inadmissible, I had little hope of our ever agreeing; especially as the Mississippi was, and ought to be, our ultimatum.
It was not long before I had another interview with M. Rayneval. He asked me whether I had made any progress in my negotiations with the Count d'Aranda. I told him, that the Count had not yet shown me any powers from his Court to treat. He expressed surprise that I should have any difficulties on that head; especially considering the public as well as private character of that nobleman. I replied, that I was very sensible of the respectability, both of his public and private character; but, that neither the one nor the other authorised him to negotiate treaties with the United States of America; and consequently, that his Court would be at liberty to disavow all his proceedings in such business. That it was my duty to adhere to the forms usual in such cases, and that those forms rendered it proper for Ministers to exchange copies of their commissions, before they proceeded on the business, which was the object of them.
The Count d'Aranda was very urgent, that I should mark on his map some line or other to the eastward of the Mississippi, to which we could agree; and on the 26th of August we had another conference on these subjects. I told him frankly, that we were bound by the Mississippi, and that I had no authority to cede any territories east of it to his Catholic Majesty, and that all I could do relative to it, was to transmit his proposition to Congress for their consideration.
He affected to be much surprised, that I should have no discretionary authority on that subject, and observed, that he had supposed I was a Minister Plenipotentiary. I told him, that few Ministers Plenipotentiary had discretionary power to transfer and cede to others the countries of their sovereigns. He denied, that the countries in question were our countries, and asked what right we had to territories, which manifestly belong to free and independent nations of Indians. I answered that those were points to be discussed and settled between us and them; that we claimed the right of preemption with respect to them, and the sovereignty with respect to all other nations. I reminded him, that Mexico and Peru had been in the same predicament, and yet that his Catholic Majesty had had no doubts of his right to the sovereignty of those countries.
He then desired me to write him a letter on the subject, in order that he might with the greater accuracy convey my sentiments to his Court.
On the 4th of September, I received the following letter from M. de Rayneval.