being coated over and cemented together with calcite crystal.

From the Glacier down to the lowest level of the cave by another route
than that taken for the ascent, there is abundant evidence that at one
time this portion of the cave was subject to excessively violent
activity, and if studied with a view to the penetration of the principle
of geyser action, offers many interesting and valuable suggestions that
can be added to and expanded into definite theories in connection with
the balance of the cave; all important requirements are clearly shown.

At a short distance from the Glacier is a small circular dome, called
the Picture Gallery, which evidently was shaped by water forced up from
below. The descent from here takes us into the St. Louis Tunnel, a long
rough passage leading down into the great Cathedral, by the still
descending irregularities of which we finally reach the Garden of Eden,
the objective point of a favorite tourist route, but usually approached
from the opposite direction. It is a large chamber of very irregular
shape, with an extremely uneven ceiling, dipping nearly to the floor and
rising suddenly to distant heights, while every portion of all the
varied surfaces glitters with a mass of frost work in every form it is
known to have assumed; the banks of orange buds in different stages of
expansion being exceptionally handsome. A portion of this wonderful room
especially admired is Cupid's Alcove, where the frost is tinged with a
pinkish flush from the brilliant paint clay captured in minute particles
by the vapors. The whole room is a marvel of loveliness, but
unfortunately visitors have wrought such noticeable damage that wire
screening must be placed before the general admittance of large parties
can be resumed.

Passing out and down to a lower level, by way of Jacob's Well, we find