I transmit to the Senate, for their consideration and advice, the articles of a convention concluded at this place on the 6th instant between the Secretary of War and the chiefs and headmen of the Cherokee Nation west of the Mississippi, duly authorized by their nation. A report from the Secretary of War, with certain documents, and a map illustrative of the convention are submitted with it to the Senate. John Quincy Adams. Washington, _May 16, 1828_. _To the Senate and House of Representatives of the United States_: By a communication received from the chargé d'affaires of Prussia, a translation of which is herewith transmitted, it appears that in the ports of that Kingdom all discriminating duties so far as they affected the vessels of the United States and their cargoes have been abolished since the 15th of April, 1826. I recommend to the consideration of Congress a legislative provision whereby the reciprocal application of the same principle may be extended to Prussian vessels and their cargoes which may have arrived in the ports of the United States from and after that day. John Quincy Adams. Washington, _May 19, 1828_. _To the Senate and House of Representatives of the United States_: I transmit to Congress copies of three conventions concluded between the United States of America and His Majesty the King of the United Kingdom of Great Britain and Ireland, the ratifications of which were exchanged at London on the 2d of last month: 1. A convention concluded 6th August, 1827, for continuing in force the provisions of the convention of 3d July, 1815. 2. A convention concluded 6th August, 1827, for continuing in force the provisions of the third article of the convention of 20th October, 1818. 3. A convention concluded 29th September, 1827, for carrying into effect the provisions of the fifth article of the treaty of Ghent in relation to the northeastern boundary of the United States. John Quincy Adams. Washington, _May 21, 1828_. _To the House of Representatives of the United States_: I transmit to the House a report[015] from the Secretary of State, with a copy of the note of the minister of the United States to Spain dated 20th January, 1826, requested by a resolution of the House of the 19th instant. John Quincy Adams. Washington, _May 22, 1828_. _To the House of Representatives of the United States_: The inclosed report from the Secretary of State is accompanied by copies of the correspondence between this Government and the minister of His Britannic Majesty residing here relating to the arrest and imprisonment of John Baker,[016] requested by a recent resolution of the House. John Quincy Adams. Washington, _May 22, 1828_. _To the Senate and House of Representatives of the United States_: