This was at once acceded to.
Meanwhile Mr.Crawford, the United States minister at Paris, was endeavoring, at the instance of Mr.Gallatin, to secure the friendly interposition of the Emperor Alexander, not as a mediator, but as a common friend and in the interest of peace to the civilized world.
Crawford was unable to obtain an audience of the emperor, or even an interview with Count Nesselrode, but Lafayette took up the cause with his hearty zeal for everything that concerned the United States, and, in a long interview with the emperor at the house of Madame de Stael, submitted to him the view taken by the United States of the controversy, and obtained from him his promise to exert his personal influence with the British government on his arrival at London.

Baron von Humboldt, the Prussian minister at Paris, who had been influenced by British misrepresentation, was also won over by Lafayette, and now tendered his services to Mr.Gallatin in any way in which he might be made useful.
Lafayette's letter was brought by Humboldt in person.

Gallatin and Humboldt had met in 1804, when the great traveler passed through Washington on his return from Peru and Mexico.
The Treaty of Paris having been signed, Lord Castlereagh reached London early in June, and the emperor arrived a few days later.

Mr.Gallatin had an audience of the emperor on June 17, and on the 19th submitted an official statement of the American case and an appeal for the interposition of his imperial majesty, "the liberator and pacifier of Europe." From the interview Mr.Gallatin learned that the emperor had made three attempts in the interest of peace, but that he had no hope that his representations had been of any service.

England would not admit a third party to interfere, and he thought that, with respect to the conditions of peace, the difficulty would be with England and not with America.
On June 13 Gallatin warned Monroe of the preparations England was making which would enable her to land fifteen to twenty thousand men on the Atlantic coast; that the capture of Washington and New York would most gratify the British people, and that no help need be expected from the countries of Europe, all which were profoundly desirous of peace.
The ministry informing Mr.Gallatin that the British commissioners would start for Ghent on July 1, he improved the interval by a visit to Paris.
He left London, where he had passed nearly three months in the uncertain preliminaries of negotiation, and after a few days in the French capital reached Ghent on July 6.