When they looked forward in the line of the search-light, or through any of the windows in various parts of the vessel, they never saw anything but water--no fish, nothing floating.

They were too far below the ice above them to see it, and too far from what might be on either side of them to catch a glimpse of it.

The bottom was deep below them, and it was as though they were moving through an aqueous atmosphere.
They were comfortable, and beginning to be accustomed to their surrounding circumstances.

The air came in regularly and steadily through the electric gills, and when deteriorated air had collected in the expiration-chamber in the upper part of the vessel, it was forced out by a great piston, which sent it by a hundred little valves into the surrounding water.

Thus the pure air came in and the refuse air went out just as if the little Dipsey had been healthfully breathing as it pushed its way through the depths.
Mrs.Block was gaining flesh.