Harper's New Monthly Magazine Volume 21 June to November 1860 . 16.—COPP£E AXES FEOM THE MOUNDS. Silver has also been found, but in small quan-tities, reduced to great thinness, and closelywrapped around copper ornaments. The oreof lead, galena, has been found in considerableabundance, and some of the metal itself, undercircumstances implying a knowledge of its useon the part of the ancient people. The discov-ery of gold has been vaguely announced, but isnot well attested. It is not impossible that ar-ticles of that metal have been found, with other ANCIENT MONUMENTS IN THE UNITED STATES. 175.
Harper's New Monthly Magazine Volume 21 June to November 1860 . 16.—COPP£E AXES FEOM THE MOUNDS. Silver has also been found, but in small quan-tities, reduced to great thinness, and closelywrapped around copper ornaments. The oreof lead, galena, has been found in considerableabundance, and some of the metal itself, undercircumstances implying a knowledge of its useon the part of the ancient people. The discov-ery of gold has been vaguely announced, but isnot well attested. It is not impossible that ar-ticles of that metal have been found, with other ANCIENT MONUMENTS IN THE UNITED STATES. 175. 17,—COPPER IMPLEMENTS. vestiges of European art, accompanying second-ary and recent deposits, which are often con-founded with those of the mound-builders byignorant or credulous explorers. No iron, ortraces of iron, have yet been discovered, exceptin connection with recent deposits. There aremany good reasons for believing that both thesilver and copper found in the mounds were ob-tained from the mineral regions of Lake Supe-rior, where, it is well known, there are abundanttraces of ancient mining. The articles com-posed of these metals are without alloy, andappear to have been worked from the nativemasses. Arrow and lance heads, and cutting instru-ments of the numerous varieties of quartz, em-bracing every shade of color and degree of trans-parency, from the dull blue of the ordinary horn-stone to the brilliant opalescence of the chalce-donic varieties, are frequent in the are worked with exquisite skill from pure,limpid crystals of quartz; others from crystalsof manga
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