Embracing an analysis of the old Spanish claims, the British pretensions, the United States title; an account of the present condition and character of the country, and a thorough examination of the project of a national rail road, from the Atlantic to the Pacific Ocean. To which is added a journal of the events of the celebrated emigrating expedition of 1843; containing an account of the route from Missouri to Astoria, a table of distances, and the physical and political description of the territory, and its settlements, by a member of the recently organised Oregon legislature. The whole concluding with an appendix, containing the treaties, diplomatic correspondence, and negotiations between Spain, Russia, Great Britain, and the United States, in relation to the North West Coast