What could he be looking for on that immense expanse?
The Nautilus was then some hundreds of miles from the nearest coast.
The lieutenant had taken up the glass and examined the horizon steadfastly, going and coming, stamping his foot and showing more nervous agitation than his superior officer.

Besides, this mystery must necessarily be solved, and before long; for, upon an order from Captain Nemo, the engine, increasing its propelling power, made the screw turn more rapidly.
Just then the lieutenant drew the Captain's attention again.

The latter stopped walking and directed his glass towards the place indicated.

He looked long.

I felt very much puzzled, and descended to the drawing-room, and took out an excellent telescope that I generally used.