The electric lamp was combined in such a way as to give
its most powerful light. Indeed, it was produced in vacuo,
which insured both its steadiness and its intensity.
This vacuum economised the graphite points between which
the luminous arc was developed--an important point of economy
for Captain Nemo, who could not easily have replaced them;
and under these conditions their waste was imperceptible.
When the Nautilus was ready to continue its submarine journey,
I went down to the saloon. The panel was closed, and the course
marked direct west.
We were furrowing the waters of the Indian Ocean, a vast liquid plain,
with a surface of 1,200,000,000 of acres, and whose waters are so clear
and transparent that any one leaning over them would turn giddy.
The Nautilus usually floated between fifty and a hundred fathoms deep.
We went on so for some days. To anyone but myself, who had a great
love for the sea, the hours would have seemed long and monotonous;
but the daily walks on the platform, when I steeped myself in the reviving
air of the ocean, the sight of the rich waters through the windows
of the saloon, the books in the library, the compiling of my memoirs,
took up all my time, and left me not a moment of ennui or weariness.
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