III.
The Mound-builders in Central America.
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“Thou unrelenting Past!
Strong are the barriers round thy dark domain—
And fetters, sure and fast,
Hold all that enter thy unbreathing reign.
“Far in thy realm withdrawn,
Old empires sit in sullenness and gloom;
And glorious ages gone,
Lie deep within the shadow of thy womb.
“Full many a mighty name