I received your letter last evening, offering me, “by the direction of the President,” the Mission to St. Petersburg. I feel with the deepest sensibility this pledge of the kindness of the President, and the recollection of it shall ever be engraven on my grateful memory. My attachment for him, both personal and political, has been of the warmest character, and he has now engrafted upon that feeling a strong sense of individual gratitude. There is but a single circumstance which induces me to doubt whether I ought to accept the Mission. I wish to be placed in no public station in which I cannot discharge my duty with usefulness to the country and honor to the administration of General Jackson. Ignorant as I now am of the French language, I doubt whether I could acquire a sufficient knowledge of it in proper time to enable me to hold that free communion with the political circles in St. Petersburg which I consider essential to the able discharge of the duties of a foreign minister. I have much business now on hand which I could not immediately leave without doing serious injury to individuals who have confided in me. Will you be so kind as to inform me at what time the President would think the public interest required me to leave the country in case I should accept the Mission? Please to remember me to the President in the strongest terms. Accept my thanks for your uniform kindness, and present my respects to Mrs. Eaton. I remain Sincerely your friend, JAMES BUCHANAN. [EATON TO BUCHANAN.] (Private.) WASHINGTON CITY, June 7, 1831. DEAR SIR:— I have just received your letter, and will show it to the President, whom I shall see during the day. The difficulty you suggest can no doubt be remedied. Mr. R. is not expected to return before July or August; it would then be too late in the season to reach St. Petersburg by water transportation. To depart in September would create the necessity of travelling over land from Hamburg or Havre. This, I am confident, the President would not ask of you. I feel satisfied that he will grant the indulgence asked and defer your departure until next spring. But I will see him, and if I be wrong in this, I will again write you to-morrow;—if no letter come, you may understand by the silence that my suggestions are approved by the President. Very truly yours, J. H. EATON. P. S. I will write to you to-morrow or the next day, _at any rate_.