SIR,--I had the honor of addressing you on the 12th of the last month; since which, your favor of October the 12th has been received, enclosing a copy of the resolution of Congress for recalling Mr. Lambe. My letter by Mr. Randall informed you that we had put an end to his powers, and required him to repair to Congress. I lately received a letter from him, dated Alicant, October the 10th, of which I have the honor to enclose you a copy; by which, you will perceive that the circumstance of ill health, either true or false, is urged for his not obeying our call. I shall immediately forward the order of Congress. I am not without fear, that some misapplication of the public money may enter into the causes of his declining to return. The moment that I saw a symptom of this in his conduct, as it was a circumstance which did not admit the delay of consulting Mr. Adams, I wrote to Mr. Carmichael, to stop any moneys which he might have in the hands of his banker. I am still unable to judge whether he is guilty of this or not, as by the arrangements with Mr. Adams, who alone had done business with the bankers of the United States, in Holland, Mr. Lambe's drafts were to be made on him, and I know not what their amount has been. His drafts could not have been negotiated, if made on us both, at places so distant. Perhaps it may be thought, that the appointment of Mr. Lambe was censurable in the moment in which it was made. It is a piece of justice, therefore, which I owe to Mr. Adams, to declare that the proposition went first from me to him. I take the liberty of enclosing you a copy of my letter to Mr. Adams, of September the 24th, 1785, in which that proposition was made. It expresses the motives operating on my mind in that moment, as well as the cautions I thought it necessary to take. To these must be added, the difficulty of finding an American in Europe fit for the business, and willing to undertake it. I knew afterwards, that Dr. Bancroft (who is named in the letter) could not, on account of his own affairs, have accepted even a primary appointment. I think it evident, that no appointment could have succeeded without a much greater sum of money. I am happy to find that Mr. Barclay's mission has been attended with complete success. For this we are indebted, unquestionably, to the influence and good offices of the court of Madrid. Colonel Franks, the bearer of this, will have the honor to put into your hands the original of the treaty, with other papers accompanying it. It will appear by these, that Mr. Barclay has conducted himself with a degree of intelligence and of good faith, which reflects the highest honor on him.