The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Journey to the Center of the Earth by Jules Verne:|
lower end only at the level of the sea."
"Are you sure of that?"
"Quite sure. Consult the barometer."
In fact, the mercury, which had risen in the instrument as fast as we
descended, had stopped at twenty-nine inches.
"You see," said the Professor, "we have now only the pressure of our
atmosphere, and I shall be glad when the aneroid takes the place of
And in truth this instrument would become useless as soon as the
weight of the atmosphere should exceed the pressure ascertained at
the level of the sea.
Journey to the Center of the Earth