es long, which was shaped like other minnows, but had no eyes,
and was perfectly white, there being not the slightest shade of coloring
on the back. The upper part of its head was as translucent as agate,
through which could be seen opaque spots imbedded in the head where the
base of the eye-sockets should have been. The specimen I obtained was
one of the smallest, as the guide told me these fishes frequently
attained the length of six or seven inches.

I secured also an eyeless crawfish about three inches in length. This
forlorn little creature, like the fish, was entirely colorless. It had
two slightly protuberant spots in its head where the eyes should be; but
they were dull and opaque, and did not seem to differ in texture from
the rest of its body, which had not the translucence of that of the
fish, but looked as though carved out of white marble.

The fish are found also in "Lake Lethe," a quarter of a mile from the
Styx, as well as in "Echo River," the largest and most interesting body
of water in the cave. This last flows out of a tunnel which has such a
low roof that the volume of water nearly fills it, and from here to
where it enters the rocks again is three quarters of a mile. Here the
blind white creatures that inhabit its dark, slow-flowing waters are
more plentiful, but are as unlike those nimble, glistening fellows which
inhabit the streams of the outer world, as the cavern's atmosphere of
darkness and death is different from our atmosphere of light and life.
They refuse to bite at any bait; they move sluggishly, and, when caught
in a net, flop languidly, and die. The only food they are known to have
is the smaller ones of their own kind; and, oddest of all, they, as well
as the crawfish, give birth to their young alive, instead of spawning
the eggs to be hatched by the sun. Last and remotest of these sunless
streams is "Roaring River," the margin of whose solemn waters is nine
miles from the entrance of the cave. This should be Acheron, which hated
the light, and ran sighing down into a cave; for from this stream too
comes a perpetual moan.

The region where the several rivers mentioned are grouped is lower than
the rest of the cave, and much more gloomy in appearance than the high,
dry chambers through which one passes in coming back toward the
entrance.

I was somewhat disappointed in the display of stalactites and other
similar formations of the protocarbonate of lime found in the cave. For
a num