Agreement with Uintah and White River Ute Indians. Letter from the Secretary of the Interior, transmitting an agreement, dated the 8th instant, made by the Commission with the Uintahs and White River Ute Indians, by which they consent to sell, cede, and relinquish to the United States necessary lands for the use of such of the Uncompahgre Indians as may conclude to remove to the Uintah Indian Reservation