such a position that the frost work on the wall can be seen to
advantage. This is the largest part of the Fair Grounds and measures six
hundred and forty-five links long, exclusive of the right wing, and has
a width of fifty-three links, which with a number of wings added, makes
it one of the largest under-ground rooms within American caverns.

"A great many visitors look at their cuff-buttons when told we have
twenty-five hundred rooms included in ninety-seven miles of passageways.
Of course they do not understand how we get the mileage. In going to the
Fair Grounds we travel about three miles. In each fissure there are
eight levels, which makes twenty-four miles of cave from the entrance to
the Fair Grounds.

"Of the formations in the cave, the different kinds are on different
levels, the stalactites and stalagmites nearest the surface on the
second, the frost work on the third. This formation is in most instances
as colorless as snow. The mode of its formation is not thoroughly
understood, but is found in such positions as suggest its being formed
by vapors overcharged as spoken of about the water. It is almost always
on an over-hanging rock, over or near some fissure leading to a deeper
portion of the cave. Box work in this level is scattering and fragile:
in the fourth it is the prevailing formation: in the fifth it is heavier
and a little darker; in the sixth it varies in style and color, and
pop-corn appears, a queer formation resembling pop-corn ready to eat. It
is not so purely white here as in the lower levels, seventh and eighth.
In the seventh the box work is heavier than any seen on the Fair
Grounds' Route and the color is nearly blue, having a faded appearance.
In this tier is also found a good deal of mineral wool, which must not
be mistaken for asbestos. It sometimes attains a length of eighteen
inches and at one place where it seems to come out of a hole two inches