"
From the nearest railway station we took horses to the laboratory,
which occupied a secluded but most beautiful site at an elevation of
about six thousand feet above sea-level. With considerable surprise I
noticed a building surmounted with a dome, recalling what we had seen
from the Grand Teton on the roof of Dr. Syx's mill. Hall, observing my
look, smiled significantly, but said nothing. The laboratory proper
occupied a smaller building adjoining the domed structure. Hall led
the way into an apartment having but a single door and illuminated by
a skylight.
"This is my sanctum sanctorum," he said, "and you are the first
outsider to enter it. Seat yourself comfortably while I proceed to
unveil a little corner of the artemisium mystery."
Near one end of the room, which was about thirty feet in length, was a
table, on which lay a glass tube about two inches in diameter and
thirty inches long. In the farther end of the tube gleamed a lump of
yellow metal, which I took to be gold. Hall and I were seated near
another table about twenty-five feet distant from the tube, and on
this table was an apparatus furnished with a concave mirror, whose
optical axis was directed towards the tube.
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