"
We were in open sea; but at a distance of about ten yards,
on either side of the Nautilus, rose a dazzling wall of ice.
Above and beneath the same wall. Above, because the lower surface
of the iceberg stretched over us like an immense ceiling.
Beneath, because the overturned block, having slid by degrees, had found
a resting-place on the lateral walls, which kept it in that position.
The Nautilus was really imprisoned in a perfect tunnel of ice
more than twenty yards in breadth, filled with quiet water.
It was easy to get out of it by going either forward or backward,
and then make a free passage under the iceberg, some hundreds
of yards deeper. The luminous ceiling had been extinguished,
but the saloon was still resplendent with intense light.
It was the powerful reflection from the glass partition sent violently
back to the sheets of the lantern. I cannot describe the effect
of the voltaic rays upon the great blocks so capriciously cut;
upon every angle, every ridge, every facet was thrown a different light,
according to the nature of the veins running through the ice;
a dazzling mine of gems, particularly of sapphires, their blue rays
crossing with the green of the emerald.
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