I found out from that the mode of ventilating the boat.
When I had inhaled this air freely, I sought the conduit pipe, which conveyed to us the beneficial whiff, and I was not long in finding it.
Above the door was a ventilator, through which volumes of fresh air renewed the impoverished atmosphere of the cell.
I was making my observations, when Ned and Conseil awoke almost at the same time, under the influence of this reviving air.

They rubbed their eyes, stretched themselves, and were on their feet in an instant.
"Did master sleep well ?" asked Conseil, with his usual politeness.
"Very well, my brave boy.

And you, Mr.Land ?" "Soundly, Professor.

But, I don't know if I am right or not, there seems to be a sea breeze!" A seaman could not be mistaken, and I told the Canadian all that had passed during his sleep.
"Good!" said he.

"That accounts for those roarings we heard, when the supposed narwhal sighted the Abraham Lincoln." "Quite so, Master Land; it was taking breath." "Only, Mr.Aronnax, I have no idea what o'clock it is, unless it is dinner-time." "Dinner-time! my good fellow?
Say rather breakfast-time, for we certainly have begun another day." "So," said Conseil, "we have slept twenty-four hours ?" "That is my opinion." "I will not contradict you," replied Ned Land.