connected
with it. Mr. Pidgeon claims to have found five of these circles and
two pentagons. So far as we know, he is the only authority for their
occurrence, no one else having been so fortunate as to have found them.
This is surely a singular work, and we can not fail to recognize in it
a representation of the sun and the moon. In excavating in the central
mound, we are assured that small pieces Of mica were found abundantly
mixed with the soil. "Had the surface-soil been removed with care,
and the stratum beneath been washed by a few heavy showers of rain, so
thoroughly studded was it with small particles of mica, that under
the sun's rays it certainly would have presented no unapt symbolic
representation of that luminary."<79>

Illustration of Festival Circle.---------------------

Our next figure is another singular arrangement of crescent-shaped
works and mounds. Lapham says that crescent-shaped works are found in
Wisconsin. Pidgeon says that crescent works are found in Illinois, but
works arranged as shown in this wood-cut he found in but four places in
Wisconsin. Could we verify this author's statements, this illustration
and the preceding one would be very good evidence of the prevalence of
sun-worship among the effigy Mound Builders of Wisconsin. This would be
nothing singular, since the Indian race almost universally reverenced
the sun.<80>

Illustration of Crescent Works.---------------------

The figure below represents a group of works which, we are told, were
of a class formerly abundant in Missouri and Iowa. The embankments are
stated to be of varying heights, but all of the same length. They do not
quite meet, but a mound defends the opening. Sometimes a square is so
represented, and sometimes but two walls.

Illustration of Triangular Works.--------------

A singular statement is made in reference to a nice proportion said to
be observed between the heights of the embankments and walls. In this
case, for instance, the heights of the embankments are, three, four, and
five feet; the sum of these, twelve feet, was the exact height of the
central mound. Furthermore, the square of the sum of the heights of
three embankments gives us one hundred and forty-four feet, which is the
length of the embankments. We are gravely assured that this same nice
proportion is always observed in works of this kind. The embankments
being always of equal length, but of varying heights, still the sum of
thes