a certain amount of heat along with it.

Great was the regret that the whole region was in such profound
obscurity. Even if the moon had been in full glory but few
observations could have been made. At this season of the year an
immense curtain of snow, an icy carapace, covers up the polar
surface. There was none of that ice "blink" to be seen, that whitish
tint of which the reflection is absent from dark horizons. Under such
circumstances, how could they distinguish the shape of the ground,
the extent of the seas, the position of the islands? How could they
recognize the hydrographic network of the country or the orographic
configuration, and distinguish the hills and mountains from the
icebergs and floes?

A little after midnight an aurora illuminated the darkness. With its
silver fringes and spangles radiating over space, it seemed like a
huge fan open over half the sky. Its farthest electric effluences
were lost in the Southern Cross, whose four bright stars were
gleaming overhead. The phenomenon was one of incomparable
magnificence, and the light showed the face of the country as a
confused mass of white.

It need not be said that they had approached so near to the pole that
the compass was constantly affected, and gave no precise indication
of the course pursued. Its inclination was such that at one time
Robur felt certain they were passing over the magnetic pole
discovered by Sir James Ross. And an hour later, in calculating the
angle the needle made with the vertical, he exclaimed: "the South
Pole is beneath us!"