Archives of aboriginal knowledgeContaining all the original paper laid before Congress respecting the history, antiquities, language, ethnology, pictography, rites, superstitions, and mythology, of the Indian tribes of the United States . m nZ O. > H ho om THE INDIAN COUNTRY. • 187 green-stone trap, sieuite, and crystalline hornblende, heavy boulders of which lie at theKabica falls, below Itasca Lake; in the valley of the St. Louis river, and at St. Marysfalls; and they are perceived to be scattered through the basins of Lakes Superior andHuron. The force by which these fragments were carri
Archives of aboriginal knowledgeContaining all the original paper laid before Congress respecting the history, antiquities, language, ethnology, pictography, rites, superstitions, and mythology, of the Indian tribes of the United States . m nZ O. > H ho om THE INDIAN COUNTRY. • 187 green-stone trap, sieuite, and crystalline hornblende, heavy boulders of which lie at theKabica falls, below Itasca Lake; in the valley of the St. Louis river, and at St. Marysfalls; and they are perceived to be scattered through the basins of Lakes Superior andHuron. The force by which these fragments were carried, evidently operated from thenorth and north-east; and they constitute a striking geological appearance in the lakebasins. Lake Superior. This lake has been the central theatre of volcanic upheavals. Not only dykes ofmelted rocks have been forced up from beneath into elevated positions, but these com-pact and black rocks, which have a maiked extent, have been penetrated withmetallic veins of copper, and with traces of silver. It is remarkable that these veinshave not been filled with carbonates, sulphurets, and arseniates; but it appears as if thecaloric intensity had been such as to reduce these salts and oxides to a metallic state;
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Keywords: ., bookcentury1800, bookdecade186, booksubjectindiansofnorthamerica
