This cavity, the existence of which is not even suspected, is his home when he is not sailing in the Ebba along the coasts of the new world or the old.

Is it a big whale rising for air, and is the Ebba in danger of being shattered by a blow from the monster's tail?

In all probability, if it remained submerged during the day it rose at night and towed the Ebba on the surface.

While the so-called Count d'Artigas ordered the construction of the schooner Ebba at the shipyards of Gotteborg, in Sweden, he gave to the Cramps of Philadelphia, in America, the plans of a submarine boat whose construction excited no suspicion.