and I made our run.
We skipped over the hot floor and over the red crevices with brisk
dispatch and reached the cold lava safe but with pretty warm feet. Then
we took things leisurely and comfortably, jumping tolerably wide and
probably bottomless chasms, and threading our way through picturesque
lava upheavals with considerable confidence. When we got fairly away
from the cauldrons of boiling fire, we seemed to be in a gloomy desert,
and a suffocatingly dark one, surrounded by dim walls that seemed to
tower to the sky. The only cheerful objects were the glinting stars high
overhead.

By and by Marlette shouted "Stop!" I never stopped quicker in my life.
I asked what the matter was. He said we were out of the path. He said
we must not try to go on till we found it again, for we were surrounded
with beds of rotten lava through which we could easily break and plunge
down a thousand feet. I thought eight hundred would answer for me, and
was about to say so when Marlette partly proved his statement by
accidentally crushing through and disappearing to his arm-pits.

He got out and we hunted for the path with the lantern. He said there
was only one path and that it was but vaguely defined. We could not find
it. The lava surface was all alike in the lantern light. But he was an
ingenious man. He said it was not the lantern that had informed him that
we were out of the path, but his feet. He had noticed a crisp grinding
of fine lava-needles under his feet, and some instinct reminded him that
in the path these were all worn away. So he put the lantern behind him,
and began to search with his boots instead of his eyes. It was good
sagacity. The first time his foot touched a surface that did not grind
under it he announced that the trail was found again; and after that we
kept up a sharp listening for the rasping sound and it always warned us
in time.

It was a long tramp, but an exciting one. We reached the North Lake
between ten and eleven o'clock, and sat down on a huge overhanging
lava-shelf, tired but satisfied. The spectacle presented was worth
coming double the distance to see. Under us, and stretching away before
us, was a heaving sea of molten fire of seemingly limitless extent. The
glare from it was so blinding that it was some time before we could bear
to look upon it steadily.

It was like gazing at the sun at noon-day, except that the glare was not
quite so white. At unequal distances all arou