vitrified tunnel, and devoured it, and played upon the rocks behind, that
hissed and sputtered like pitch, and the place was blind with steam. But
when the tooth of fire was withdrawn, the tiny inner cascade fell again
and wrought coolness with its sprinkling.

"I did not discover this all at once, for at first fright took me, and it
was enough to watch for the moment of the light's appearance and then
flee with a little laughter. But one day I ventured back into the cave
after the sun had crossed the valley, and the steam had died away, and
the rock cooled behind the miniature cascade.

"I looked through the lens, and it seemed full of a great white light
that blazed into my eyes, so that I fell back through the inner fan of
water and was well soused by it; but my sight presently recovering, I
stood forward in the scoop of rock admiring the dainty hollow curve the
fan took in its fall. By-and-by I became aware that I was looking out
through a smaller lens upon the great one, and that strange whirling
mists seemed to be sweeping across a huge disc, within touch of my hand
almost.

"It was long before I grasped the meaning of this; but, in a flash, it
came upon me. The great lens formed the object glass, the small, the
eyeglass, of a natural telescope of tremendous power, that drew the high
summer clouds down within seeming touch and opened out the heavens before
my staring eyes.

"Monsieur, when this dawned upon me I was wild. That so astonishing a
discovery should have been reserved for a poor ignorant Swiss peasant
filled me with pride wicked in proportion with its absence of gratitude
to the mighty dispenser of good. I came even to think my individuality