We mentioned, ola Saturday, the ar- rival in this city of an Agent from the Ghoctaw nation of Indians, to negotiate for the sale oft their lands in the State of Mississippi. The person referred tois, we now understand, ,only the bearer of a specific proposition to that effect from the Ghoctaw Nation 10 the President of the United States, having no delegated powers from that nation to ochange the terms proposed by them.-Nat. Incl.