Conventions with Great Britain. Message from the President of the United States, transmitting copies of three conventions with Great Britain: 1. For continuing in force the provisions of the Convention of 3d July, 1815. 2. For continuing in force the provisions of the third article of the Convention of 20th October, 1818; and 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 ..