Nine years ago, the writer wished to obtain some information in relation to Minnesota, but could find no reliable history. Even the devout astronomer and geologist, Nicollet, was misled by the fable of Baron La Hontan, more wonderful than any Munchausen story, and inclined to the belief that the Long river, on which that writer said he travelled in a canoe in winter, was really a stream of Minnesota.<br><br>The most costly Atlas ever published in America, which adorns libraries and is a work of reference used by our public men, in the description of this portion of the Union, is full of errors. As the historian of a government exploring expedition, informed the world, that "with the most active vigilance, it was impossible to subsist upon the grain" raised in the vicinity of Chicago, so the editor of the geographical descriptions accompanying the work to which we have alluded, with the same incorrectness, states that the summers of Minnesota arc too brief for agricultural success.