Nothing was heard from Count Nesselrode for nearly a month; but on the evening of November 21st Mr. Buchanan met him at a party. The count took Mr. Buchanan aside, and told him that he believed he was now ready for him, and proposed to send him a project of a treaty of commerce which should be founded on the provisions of the American treaties with Prussia, Sweden and Austria. Long interviews and oral discussions of this project then took place at the Foreign Office between Mr. Buchanan, Count Nesselrode, Baron Brunnow and Baron Sacken. In these discussions Mr. Buchanan evinced the most thorough acquaintance with the whole subject, and gave the Russian statesmen information which was new to them and greatly surprised them. At length all the details of the treaty were settled, and by the 17th of December it was prepared for signature in duplicate, in the French and English languages. Still the treaty was not yet signed. For the purpose of expediting the matter, Mr. Buchanan made a suggestion that as the emperor’s fête day, or his saint’s day, was to be celebrated on the 18th December, N. S., that it should be signed on that day. Count Nesselrode was pleased with the suggestion, and said that Mr. Buchanan’s wish should be gratified, if possible. Baron Sacken doubted if it would be practicable, but the count said it must be done, and that Mr. Clay, the American Secretary of Legation, could assist them in making the copies. This occurred on the 13th of December, N. S. It was not, however, until Mr. Buchanan was in the presence of the emperor, at his levée on the morning of the 18th, that he felt finally assured that the treaty would be signed, although Count Nesselrode had informed him on the 15th that he was authorized to sign it. What occurred at the emperor’s levée will be best told by Mr. Buchanan himself: On Tuesday morning, the 18th, we went to the emperor’s levée; and on this occasion a singular occurrence took place in relation to the treaty. The strictest secrecy had been preserved throughout the negotiation. Indeed I do not believe an individual, except those immediately concerned, had the least idea that negotiations were even pending. A rumor of the refusal of this government to make the treaty had circulated two months ago, and I was then repeatedly informed in conversation, that it was in vain for any nation to attempt to conclude a treaty of commerce with the Russian government, whilst Count Cancrene continued to be minister of finance. Count Nesselrode had on one occasion intimated a desire that the British government should not obtain a knowledge that negotiations were proceeding, and this was an additional reason on our part for observing the greatest caution.