How Old Is The Mississippi Valley?

Geological examination of the delta f the Mississippi shows that for a distance of afcout three hundred milea there wo buried forosts of large trees, one over the othor, with interspaces of sand. Ten diatimet forest growths of this description have boen observed, whioli, it is believed, lunst have sucooedodeach other. Of these trees, knovn as the bald cyprons, ome have beeu found twenty-five feet ia diamotor, and one coutaiaed 5,700 ringB; in some instauces, too, Iñigo trees havo grown over the stumps of othora eyually large. From these facts geologista ha,ve assumed tho antiquity of each forost grown at 10,000 years, or